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  • Molecular Sequence Data  (211)
  • United States  (183)
  • National Institutes of Health (U.S.)  (43)
  • American Association for the Advancement of Science (AAAS)  (393)
  • American Association of Petroleum Geologists (AAPG)
  • 1990-1994  (393)
  • 1991  (393)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (393)
  • American Association of Petroleum Geologists (AAPG)
  • Springer  (2)
Years
  • 1990-1994  (393)
Year
  • 1
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    The combination of symbolic and numerical computation for three-dimensional modeling of RNA (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-09-13
    Description: Three-dimensional (3-D) structural models of RNA are essential for understanding of the cellular roles played by RNA. Such models have been obtained by a technique based on a constraint satisfaction algorithm that allows for the facile incorporation of secondary and other structural information. The program generates 3-D structures of RNA with atomic-level resolution that can be refined by numerical techniques such as energy minimization. The precision of this technique was evaluated by comparing predicted transfer RNA loop and RNA pseudoknot structures with known or consensus structures. The root-mean-square deviation (2.0 to 3.0 angstroms before minimization) between predicted and control structures reveal this system to be an effective method in modeling RNA.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Major, F -- Turcotte, M -- Gautheret, D -- Lapalme, G -- Fillion, E -- Cedergren, R -- New York, N.Y. -- Science. 1991 Sep 13;253(5025):1255-60.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Departement d'Informatique et de Recherche Operationnelle, Universite de Montreal, Quebec, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1716375" target="_blank"〉PubMed〈/a〉
    Keywords: Algorithms ; Anticodon/chemistry ; Base Sequence ; *Models, Molecular ; Molecular Sequence Data ; Nucleic Acid Conformation ; RNA/*chemistry ; RNA, Transfer/*chemistry
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
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    A multisubunit ribozyme that is a catalyst of and template for complementary strand RNA synthesis (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-29
    Description: Derivatives of the sunY self-splicing intron efficiently catalyzed the synthesis of complementary strand RNA by template-directed assembly of oligonucleotides. These ribozymes were separated into three short RNA fragments that formed active catalytic complexes. One of the multisubunit sunY derivatives catalyzed the synthesis of a strand of RNA complementary to one of its own subunits. These results suggest that prebiotically synthesized oligonucleotides might have been able to assemble into a complex capable of self-replication.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Doudna, J A -- Couture, S -- Szostak, J W -- New York, N.Y. -- Science. 1991 Mar 29;251(5001):1605-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Massachusetts General Hospital, Boston 02114.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1707185" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Composition ; Base Sequence ; *Introns ; Molecular Sequence Data ; Nucleic Acid Conformation ; Oligoribonucleotides/metabolism ; RNA/*biosynthesis/genetics ; RNA Splicing ; RNA, Catalytic/*metabolism ; Templates, Genetic ; Tetrahymena/*genetics
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
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    Group I intron self-splicing with adenosine: evidence for a single nucleoside-binding site (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-04-19
    Description: For self-splicing of Tetrahymena ribosomal RNA precursor, guanosine binding is required for 5' splice-site cleavage and exon ligation. Whether these two reactions use the same or different guanosine-binding sites has been debated. A double mutation in a previously identified guanosine-binding site within the intron resulted in preference for adenosine (or adenosine triphosphate) as the substrate for cleavage at the 5' splice site. However, splicing was blocked in the exon ligation step. Blockage was reversed by a change from guanine to adenine at the 3' splice site. These results indicate that a single determinant specifies nucleoside binding for both steps of splicing. Furthermore, it suggests that RNA could form an active site specific for adenosine triphosphate.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Been, M D -- Perrotta, A T -- GM-40689/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Apr 19;252(5004):434-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biochemistry, Duke University Medical Center, Durham, NC 27710.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2017681" target="_blank"〉PubMed〈/a〉
    Keywords: Adenosine/*metabolism ; Adenosine Triphosphate/pharmacology ; Animals ; Base Sequence ; Binding Sites ; Exons ; Guanosine/metabolism ; *Introns ; Magnesium/pharmacology ; Molecular Sequence Data ; Molecular Structure ; Mutagenesis ; RNA Precursors/chemistry/genetics ; *RNA Splicing ; RNA, Catalytic/metabolism ; Tetrahymena/genetics
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
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    NIH: the price of neglect (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Weiss, R -- New York, N.Y. -- Science. 1991 Feb 1;251(4993):508-11.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1990424" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; *Morale ; National Institutes of Health (U.S.)/*organization & administration ; Salaries and Fringe Benefits ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
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    A $9-billion budget for NIH (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1991 Nov 8;254(5033):791.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948060" target="_blank"〉PubMed〈/a〉
    Keywords: *Budgets ; Humans ; *National Institutes of Health (U.S.) ; Neoplasms ; *Research Support as Topic ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 6
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    WHO AIDS program: moving on a new track (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1991 Oct 25;254(5031):511-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948020" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*prevention & control ; Humans ; United States ; United States Dept. of Health and Human Services ; World Health Organization
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
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    Identification of the DNA binding site for NGFI-B by genetic selection in yeast (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-05-31
    Description: An in vivo selection system for isolating targets of DNA binding proteins in yeast was developed and used to identify the DNA binding site for the NGFI-B protein, a member of the steroid-thyroid hormone receptor superfamily. The feasibility of the technique was verified by selecting DNA fragments that contained binding sites for GCN4, a well-characterized yeast transcriptional activator. The DNA binding domain of NGFI-B, expressed as part of a LexA-NGFI-B-GAL4 chimeric activator, was then used to isolate a rat genomic DNA fragment that contained an NGFI-B binding site. The NGFI-B response element (NBRE) is similar to but functionally distinct from elements recognized by the estrogen and thyroid hormone receptors and the hormone receptor-like proteins COUP-TF, CF1, and H-2RIIBP. Cotransfection experiments in mammalian cells demonstrated that NGFI-B can activate transcription from the NBRE with or without its putative ligand binding domain.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wilson, T E -- Fahrner, T J -- Johnston, M -- Milbrandt, J -- NS01018/NS/NINDS NIH HHS/ -- P01 CA49712/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 May 31;252(5010):1296-300.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, Washington University School of Medicine, St. Louis, MO 63110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1925541" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Bacterial Proteins/metabolism ; Base Sequence ; Binding Sites ; Cloning, Molecular ; DNA, Fungal/*metabolism ; DNA-Binding Proteins/genetics/*metabolism/pharmacology ; Fungal Proteins/metabolism ; Molecular Sequence Data ; Nuclear Receptor Subfamily 4, Group A, Member 1 ; Plasmids ; *Protein Kinases ; Rats ; Receptors, Cytoplasmic and Nuclear ; Receptors, Steroid ; Repressor Proteins ; Saccharomyces cerevisiae/*genetics ; *Saccharomyces cerevisiae Proteins ; *Serine Endopeptidases ; Transcription Factors/genetics/*metabolism/pharmacology ; Transcription, Genetic ; Transfection
    Print ISSN: 0036-8075
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  • 8
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    Tape trouble (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Aug 9;253(5020):611.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1871595" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome ; Confidentiality ; Humans ; *National Institutes of Health (U.S.) ; *Scientific Misconduct ; United States
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 9
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    Emphasizing the health in NIH (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1991 Oct 4;254(5028):23-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1925554" target="_blank"〉PubMed〈/a〉
    Keywords: National Institutes of Health (U.S.)/*organization & administration ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
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    Healy uses wit to woo NIHers (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-09-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1991 Sep 27;253(5027):1483.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1896856" target="_blank"〉PubMed〈/a〉
    Keywords: Budgets ; National Institutes of Health (U.S.)/*organization & administration ; Research Support as Topic ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 11
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    Children and divorce (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-08-30
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Aug 30;253(5023):952.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1887223" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; *Divorce ; *Emotions ; Humans ; Longitudinal Studies ; Mental Disorders/*epidemiology/etiology ; *Psychology, Child ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 12
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    Isolation of an active human transposable element (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-12-30
    Description: Two de novo insertions of truncated L1 elements into the factor VIII gene on the X chromosome have been identified that produced hemophilia A. A full-length L1 element that is the likely progenitor of one of these insertions was isolated by its sequence identity to the factor VIII insertion. This L1 element contains two open-reading frames and is one of at least four alleles of a locus on chromosome 22 that has been occupied by an L1 element for at least 6 million years.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Dombroski, B A -- Mathias, S L -- Nanthakumar, E -- Scott, A F -- Kazazian, H H Jr -- New York, N.Y. -- Science. 1991 Dec 20;254(5039):1805-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21205.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1662412" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Base Sequence ; Chromosomes, Human, Pair 22 ; *DNA Transposable Elements ; Factor VIII/*genetics ; Genome, Human ; Hemophilia A/*genetics ; Humans ; Molecular Sequence Data ; Open Reading Frames ; Restriction Mapping ; Sequence Homology, Nucleic Acid ; X Chromosome
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 13
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    Breast cancer: stalemate in the war on cancer (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Marshall, E -- New York, N.Y. -- Science. 1991 Dec 20;254(5039):1719-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1763320" target="_blank"〉PubMed〈/a〉
    Keywords: Breast Neoplasms/*economics/prevention & control/therapy ; Female ; Government Agencies ; Humans ; National Institutes of Health (U.S.) ; Research Support as Topic ; United States
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 14
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    Panel wavers on roots of cancer (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-02
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Aug 2;253(5019):509.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1857980" target="_blank"〉PubMed〈/a〉
    Keywords: Health Policy ; Humans ; Middle Aged ; Neoplasms/*epidemiology/etiology ; United States ; United States Public Health Service
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 15
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    Repression of HIV-1 transcription by a cellular protein (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-22
    Description: A cellular DNA binding protein, LBP-1, sequentially interacts in a concentration-dependent manner with two sites that surround the transcriptional initiation site of the human immunodeficiency virus type 1 (HIV-1) promoter. Although sequences in the downstream site (site I) were found to enhance transcription, purified LBP-1 specifically repressed transcription in vitro by binding to the upstream site (site II), which overlaps the TATA element. The binding of human TATA binding factor (TFIID) to the promoter before LBP-1 blocked repression, suggesting that repression resulted from an inhibition of TFIID binding to the TATA element. Furthermore, mutations that eliminated binding to site II both prevented repression in vitro and increased HIV-1 transcription in stably transformed cells. These findings suggest that a cellular factor regulates HIV-1 transcription in a manner that is characteristic of bacterial repressors and that this factor could be important in HIV-1 latency.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kato, H -- Horikoshi, M -- Roeder, R G -- AI27397/AI/NIAID NIH HHS/ -- CA42567/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 Mar 22;251(5000):1476-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Biochemistry and Molecular Biology, Rockefeller University, New York, NY 10021.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2006421" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA-Binding Proteins/genetics ; *Gene Expression Regulation, Viral ; HIV-1/*genetics ; Molecular Sequence Data ; Promoter Regions, Genetic ; Repressor Proteins/*genetics ; Transcription Factor TFIID ; Transcription Factors/metabolism ; Transcription, Genetic
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 16
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    A phosphorylation site in the Na+ channel required for modulation by protein kinase C (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-08
    Description: Voltage-gated sodium channels are responsible for generation of action potentials in excitable cells. Activation of protein kinase C slows inactivation of sodium channels and reduces peak sodium currents. Phosphorylation of a single residue, serine 1506, that is located in the conserved intracellular loop between domains III and IV and is involved in inactivation of the sodium channel, is required for both modulatory effects. Mutant sodium channels lacking this phosphorylation site have normal functional properties in unstimulated cells but do not respond to activation of protein kinase C. Phosphorylation of this conserved site in sodium channel alpha subunits may regulate electrical activity in a wide range of excitable cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉West, J W -- Numann, R -- Murphy, B J -- Scheuer, T -- Catterall, W A -- GM07270/GM/NIGMS NIH HHS/ -- NS15751/NS/NINDS NIH HHS/ -- NS25704/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1991 Nov 8;254(5033):866-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, University of Washington, Seattle 98195.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1658937" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cell Membrane/physiology ; Cells, Cultured ; Membrane Potentials ; Models, Structural ; Molecular Sequence Data ; Phosphorylation ; Protein Conformation ; Protein Kinase C/*metabolism ; Sodium Channels/metabolism/*physiology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 17
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    Identification of p53 gene mutations in bladder cancers and urine samples (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-05-03
    Description: Although bladder cancers are very common, little is known about their molecular pathogenesis. In this study, invasive bladder cancers were evaluated for the presence of gene mutations in the p53 suppressor gene. Of 18 tumors evaluated, 11 (61 percent) were found to have genetic alterations of p53. The alterations included ten point mutations resulting in single amino acid substitutions, and one 24-base pair deletion. In all but one case, the mutations were associated with chromosome 17p allelic deletions, leaving the cells with only mutant forms of the p53 gene products. Through the use of the polymerase chain reaction and oligomer-specific hybridization, p53 mutations were identified in 1 to 7 percent of the cells within the urine sediment of each of three patients tested. The p53 mutations are the first genetic alterations demonstrated to occur in a high proportion of primary invasive bladder cancers. Detection of such mutations ex vivo has clinical implications for monitoring individuals whose tumor cells are shed extracorporeally.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sidransky, D -- Von Eschenbach, A -- Tsai, Y C -- Jones, P -- Summerhayes, I -- Marshall, F -- Paul, M -- Green, P -- Hamilton, S R -- Frost, P -- CA09071/CA/NCI NIH HHS/ -- CA43460/CA/NCI NIH HHS/ -- CA49758/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 May 3;252(5006):706-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Oncology, Johns Hopkins University, Baltimore, MD 21231.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2024123" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Base Sequence ; Chromosome Deletion ; Chromosomes, Human, Pair 17 ; *Genes, p53 ; Humans ; Molecular Sequence Data ; *Mutation ; Nucleic Acid Hybridization ; Oligonucleotide Probes ; Polymerase Chain Reaction ; Urinary Bladder Neoplasms/*genetics/urine ; Urine/cytology
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 18
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    Mental health agency may rejoin NIH (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-06-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1991 Jun 14;252(5012):1484.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2047854" target="_blank"〉PubMed〈/a〉
    Keywords: National Institute of Mental Health (U.S.)/*organization & administration ; National Institutes of Health (U.S.)/*organization & administration ; Politics ; United States
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  • 19
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    Gallo concedes contamination (again) (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-06-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1991 Jun 7;252(5011):1369.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2047847" target="_blank"〉PubMed〈/a〉
    Keywords: *Hiv ; History, 20th Century ; Humans ; Male ; National Institutes of Health (U.S.) ; United States ; Virus Cultivation
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  • 20
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    Hints emerge from the Gallo Probe (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hamilton, D P -- New York, N.Y. -- Science. 1991 Aug 16;253(5021):728-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1876829" target="_blank"〉PubMed〈/a〉
    Keywords: Hiv-1 ; History, 20th Century ; National Institutes of Health (U.S.) ; Patents as Topic ; *Scientific Misconduct ; United States
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  • 21
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    Policy-making: getting better data (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-23
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hamilton, D P -- New York, N.Y. -- Science. 1991 Aug 23;253(5022):847.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1876844" target="_blank"〉PubMed〈/a〉
    Keywords: Budgets ; Data Collection/*standards ; Delivery of Health Care/economics ; *Policy Making ; United States
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  • 22
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    New AIDS drug poised to move into development (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Dec 20;254(5039):1715.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1763318" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*drug therapy ; Antiviral Agents/*therapeutic use/toxicity ; *Benzodiazepines ; Drug Evaluation ; Drug Industry ; Gene Products, tat/*antagonists & inhibitors ; HIV/drug effects ; Humans ; *Pyrroles ; United States ; tat Gene Products, Human Immunodeficiency Virus
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  • 23
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    Federal impediments to scientific research (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Abelson, P H -- New York, N.Y. -- Science. 1991 Feb 8;251(4994):605.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1992510" target="_blank"〉PubMed〈/a〉
    Keywords: Legislation as Topic ; *Research ; *Science ; United States
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  • 24
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    Putting AIDS research in perspective (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Palca, J -- New York, N.Y. -- Science. 1991 Mar 8;251(4998):1172.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2006406" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*economics ; Behavioral Research ; *Biomedical Research ; Federal Government ; Humans ; National Institutes of Health (U.S.) ; *Research Support as Topic ; *Resource Allocation ; United States
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  • 25
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    Photoreceptor deactivation and retinal degeneration mediated by a photoreceptor-specific protein kinase C (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-12-06
    Description: The protein kinase C (PKC) family of serine-threonine kinases has been implicated in the regulation of a variety of signaling cascades. One member of this family, eye-PKC, is expressed exclusively in the Drosophila visual system. The inaC (inactivation-no-afterpotential C) locus was shown to be the structural gene for eye-PKC. Analysis of the light response from inaC mutants showed that this kinase is required for the deactivation and rapid desensitization of the visual cascade. Light adaptation was also defective in inaC mutant flies. In flies carrying the retinal degeneration mutation rdgB, absence of eye-PKC suppressed photoreceptor cell degeneration. These results indicate that eye-PKC functions in the light-dependent regulation of the phototransduction cascade in Drosophila.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Smith, D P -- Ranganathan, R -- Hardy, R W -- Marx, J -- Tsuchida, T -- Zuker, C S -- New York, N.Y. -- Science. 1991 Dec 6;254(5037):1478-84.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, University of California, San Diego, La Jolla.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1962207" target="_blank"〉PubMed〈/a〉
    Keywords: Adaptation, Physiological/physiology ; Amino Acid Sequence ; Animals ; Calcium/physiology ; DNA Mutational Analysis ; Drosophila melanogaster/*genetics ; Eye/enzymology ; Genes ; Molecular Sequence Data ; Photoreceptor Cells/*physiology ; Protein Kinase C/chemistry/*physiology ; Restriction Mapping ; Retinal Degeneration/pathology/*physiopathology ; Signal Transduction ; *Vision, Ocular
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  • 26
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    OSI investigator "reined in" (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-07-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hamilton, D P -- New York, N.Y. -- Science. 1991 Jul 26;253(5018):372.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1862335" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome ; Hiv ; Humans ; National Institutes of Health (U.S.)/*organization & administration ; Research/*standards ; *Scientific Misconduct ; United States ; United States Dept. of Health and Human Services/organization & administration
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  • 27
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    NIH takes heat for lax investigation (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-15
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hamilton, D P -- New York, N.Y. -- Science. 1991 Mar 15;251(4999):1305.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2003215" target="_blank"〉PubMed〈/a〉
    Keywords: *Biomedical Research ; Federal Government ; Fraud ; Government Regulation ; National Institutes of Health (U.S.)/*organization & administration/standards ; United States
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  • 28
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    Function of the homeodomain protein GHF1 in pituitary cell proliferation (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-07-12
    Description: Mutations that cause pituitary dwarfism in the mouse reside in the gene encoding the transcription factor growth hormone factor 1 (GHF1 or pit1). These dwarf mice (dw and dwJ) are deficient in growth hormone (GH) and prolactin (PRL) synthesis and exhibit pituitary hypoplasia, suggesting a stem cell defect. With antisense oligonucleotide technology, a cell culture model of this genetic defect was developed. Specific inhibition of GHF1 synthesis by complementary oligonucleotides led to a marked decrease in GH and PRL expression and to a marked decrease in proliferation of somatotrophic cell lines. These results provide direct evidence that the homeodomain protein GHF1 is required not only for the establishment and maintenance of the differentiated phenotype but for cell proliferation as well.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Castrillo, J L -- Theill, L E -- Karin, M -- DK38527/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1991 Jul 12;253(5016):197-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pharmacology, School of Medicine, University of California, San Diego, La Jolla 92093.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1677216" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antisense Elements (Genetics) ; Base Sequence ; *Cell Division ; Cells, Cultured ; DNA/biosynthesis ; DNA-Binding Proteins/*physiology ; Dwarfism/genetics ; Gene Expression Regulation ; *Genes, Homeobox ; Growth Hormone/genetics ; In Vitro Techniques ; Mice ; Molecular Sequence Data ; Pituitary Gland/*cytology/physiology ; Prolactin/genetics ; Transcription Factor Pit-1 ; Transcription Factors/*physiology
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  • 29
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    NIH misconduct procedures derailed (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-01-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hamilton, D P -- New York, N.Y. -- Science. 1991 Jan 11;251(4990):152-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1846242" target="_blank"〉PubMed〈/a〉
    Keywords: *Biomedical Research ; Federal Government ; *Government Regulation ; Scientific Misconduct/*legislation & jurisprudence ; United States ; *United States Office of Research Integrity
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  • 30
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    Cloning and expression of a cocaine-sensitive rat dopamine transporter (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-25
    Description: The action of dopamine and other monoamine neurotransmitters at synapses is terminated predominantly by high-affinity reuptake into presynaptic terminals by specific sodium-dependent neurotransmitter transport proteins. A complementary DNA encoding a rat dopamine transporter has been isolated that exhibits high sequence similarity with the previously cloned norepinephrine and gamma-aminobutyric acid transporters. Transient expression of the complementary DNA in HeLa cells confirms the cocaine sensitivity of this transporter.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kilty, J E -- Lorang, D -- Amara, S G -- New York, N.Y. -- Science. 1991 Oct 25;254(5031):578-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Yale University, New Haven, CT 06510.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948035" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Carrier Proteins/drug effects/*genetics/metabolism ; Cloning, Molecular ; Cocaine/*pharmacology ; Dopamine/*metabolism ; Dopamine Plasma Membrane Transport Proteins ; Gene Expression ; HeLa Cells ; Humans ; Kinetics ; *Membrane Glycoproteins ; *Membrane Transport Proteins ; Molecular Sequence Data ; *Nerve Tissue Proteins ; Oligodeoxyribonucleotides ; Polymerase Chain Reaction/methods ; Rats ; Sequence Homology, Nucleic Acid ; Transfection
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  • 31
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    A genetic model for interaction of the homeodomain recognition helix with DNA (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-01-25
    Description: The Bicoid homeodomain protein controls anterior development in the Drosophila embryo by binding to DNA and regulating gene expression. With the use of genetic assays in yeast, the interaction between the Bicoid homeodomain and a series of mutated DNA sites was studied. These experiments defined important features of homeodomain binding sites, identified specific amino acid-base pair contacts, and suggested a model for interaction of the recognition alpha-helices of Bicoid and Antennapedia-class homeodomain proteins with DNA. The model is in general agreement with results of crystallographic and magnetic resonance studies, but differs in important details. It is likely that genetic studies of protein-DNA interaction will continue to complement conventional structural approaches.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hanes, S D -- Brent, R -- New York, N.Y. -- Science. 1991 Jan 25;251(4992):426-30.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Massachusetts General Hospital, Boston 02114.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1671176" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; DNA/*metabolism ; DNA-Binding Proteins/*genetics/metabolism ; Drosophila ; Gene Expression Regulation ; Genes, Homeobox/*genetics ; *Homeodomain Proteins ; Insect Hormones/*genetics/metabolism ; *Models, Genetic ; Molecular Sequence Data ; *Trans-Activators ; Transcription, Genetic
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  • 32
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    Visualizing the higher order folding of a catalytic RNA molecule (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-01-25
    Description: The higher order folding process of the catalytic RNA derived from the self-splicing intron of Tetrahymena thermophila was monitored with the use of Fe(II)-EDTA-induced free radical chemistry. The overall tertiary structure of the RNA molecule forms cooperatively with the uptake of at least three magnesium ions. Local folding transitions display different metal ion dependencies, suggesting that the RNA tertiary structure assembles through a specific folding intermediate before the catalytic core is formed. Enzymatic activity, assayed with an RNA substrate that is complementary to the catalytic RNA active site, coincides with the cooperative structural transition. The higher order RNA foldings produced by Mg(II), Ca(II), and Sr(II) are similar; however, only the Mg(II)-stabilized RNA is catalytically active. Thus, these results directly demonstrate that divalent metal ions participate in general folding of the ribozyme tertiary structure, and further indicate a more specific involvement of Mg(II) in catalysis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Celander, D W -- Cech, T R -- New York, N.Y. -- Science. 1991 Jan 25;251(4992):401-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Chemistry and Biochemistry, University of Colorado, Boulder 80309-0215.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1989074" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Calcium/metabolism ; Densitometry ; Kinetics ; Magnesium/metabolism ; Magnesium Chloride/pharmacology ; Molecular Sequence Data ; Nucleic Acid Conformation ; RNA, Catalytic/*chemistry/drug effects/metabolism ; Strontium/metabolism ; Tetrahymena
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  • 33
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    Resistance to ddI and sensitivity to AZT induced by a mutation in HIV-1 reverse transcriptase (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-09-27
    Description: Serial human immunodeficiency virus type-1 (HIV-1) isolates were obtained from five individuals with acquired immunodeficiency syndrome (AIDS) who changed therapy to 2',3'-dideoxyinosine (ddI) after at least 12 months of treatment with 3'-azido-3'-deoxythymidine (zidovudine, AZT). The in vitro sensitivity to ddI decreased during the 12 months following ddI initiation, whereas AZT sensitivity increased. Analysis of the reverse transcriptase coding region revealed a mutation associated with reduced sensitivity to ddI. When this mutation was present in the same genome as a mutation known to confer AZT resistance, the isolates showed increased sensitivity to AZT. Analysis of HIV-1 variants confirmed that the ddI resistance mutation alone conferred ddI and 2',3'-dideoxycytidine resistance, and suppressed the effect of the AZT resistance mutation. The use of combination therapy for HIV-1 disease may prevent drug-resistant isolates from emerging.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉St Clair, M H -- Martin, J L -- Tudor-Williams, G -- Bach, M C -- Vavro, C L -- King, D M -- Kellam, P -- Kemp, S D -- Larder, B A -- New York, N.Y. -- Science. 1991 Sep 27;253(5027):1557-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Virology, Burroughs Wellcome Co., Research Triangle Park, NC 27709.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1716788" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*drug therapy/microbiology ; Base Sequence ; DNA, Viral/*genetics ; Didanosine/*pharmacology/*therapeutic use ; Drug Resistance, Microbial ; Genotype ; HIV-1/*drug effects/enzymology/isolation & purification ; Humans ; Molecular Sequence Data ; *Mutation ; Oligodeoxyribonucleotides ; RNA-Directed DNA Polymerase/*genetics/metabolism ; Zidovudine/pharmacology/*therapeutic use
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  • 34
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    Overhead costs (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-05-24
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 May 24;252(5009):1046.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2031175" target="_blank"〉PubMed〈/a〉
    Keywords: Costs and Cost Analysis ; National Institutes of Health (U.S.) ; *Research Support as Topic ; United States
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  • 35
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    Related RNA polymerase-binding regions in human RAP30/74 and Escherichia coli sigma 70 (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-23
    Description: RAP30/74 is a heteromeric general transcription initiation factor that binds to mammalian RNA polymerase II. The RAP30 subunit contains a region that is similar in amino acid sequence to the RNA polymerase-binding domain of the Escherichia coli transcription initiation factor sigma 70 (sigma 70). Mammalian RNA polymerase II specifically protected a serine residue in the sigma 70-related region of RAP30 from phosphorylation in vitro. In addition, human RAP30/74 bound to Escherichia coli RNA polymerase and was displaced by sigma 70. These results suggest that RAP30 and sigma 70 have functionally related RNA polymerase-binding regions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McCracken, S -- Greenblatt, J -- New York, N.Y. -- Science. 1991 Aug 23;253(5022):900-2.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Banting and Best Department of Medical Research, University of Toronto, Ontario, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1652156" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites ; Centrifugation, Density Gradient ; Cyanogen Bromide ; Cyclic AMP/pharmacology ; Escherichia coli/*analysis/enzymology ; Humans ; Molecular Sequence Data ; Peptide Fragments/chemistry/metabolism ; Phosphorylation ; Protein Kinases/metabolism ; RNA Polymerase II/*metabolism ; Sigma Factor/chemistry/*metabolism ; Transcription Factors/chemistry/*metabolism ; *Transcription Factors, TFII ; Trypsin
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  • 36
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    Exchange of conduction pathways between two related K+ channels (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-22
    Description: The structure of the ion conduction pathway or pore of voltage-gated ion channels is unknown, although the linker between the membrane spanning segments S5 and S6 has been suggested to form part of the pore in potassium channels. To test whether this region controls potassium channel conduction, a 21-amino acid segment of the S5-S6 linker was transplanted from the voltage-activated potassium channel NGK2 to another potassium channel DRK1, which has very different pore properties. In the resulting chimeric channel, the single channel conductance and blockade by external and internal tetraethylammonium (TEA) ion were characteristic of the donor NGK2 channel. Thus, this 21-amino acid segment controls the essential biophysical properties of the pore and may form the conduction pathway of these potassium channels.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hartmann, H A -- Kirsch, G E -- Drewe, J A -- Taglialatela, M -- Joho, R H -- Brown, A M -- NS08805/NS/NINDS NIH HHS/ -- NS23877/NS/NINDS NIH HHS/ -- NS28407/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1991 Feb 22;251(4996):942-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Physiology and Biophysics, Baylor College of Medicine, Houston, TX 77030.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2000495" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Brain/physiology ; Chimera ; Cloning, Molecular ; Female ; Ion Channel Gating ; Membrane Potentials ; Molecular Sequence Data ; Oligonucleotide Probes ; Oocytes/physiology ; Polymerase Chain Reaction ; Potassium Channels/drug effects/genetics/*physiology ; Rats ; Restriction Mapping ; Sequence Homology, Nucleic Acid ; Tetraethylammonium ; Tetraethylammonium Compounds/pharmacology ; Xenopus
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    Elvis impersonator? (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-18
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Stevens, P W -- New York, N.Y. -- Science. 1991 Oct 18;254(5030):357-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1925586" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Molecular Sequence Data ; *Oligopeptides
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    Structure of a peptide inhibitor bound to the catalytic subunit of cyclic adenosine monophosphate-dependent protein kinase (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-07-26
    Description: The structure of a 20-amino acid peptide inhibitor bound to the catalytic subunit of cyclic AMP-dependent protein kinase, and its interactions with the enzyme, are described. The x-ray crystal structure of the complex is the basis of the analysis. The peptide inhibitor, derived from a naturally occurring heat-stable protein kinase inhibitor, contains an amphipathic helix that is followed by a turn and an extended conformation. The extended region occupies the cleft between the two lobes of the enzyme and contains a five-residue consensus recognition sequence common to all substrates and peptide inhibitors of the catalytic subunit. The helical portion of the peptide binds to a hydrophobic groove and conveys high affinity binding. Loops from both domains converge at the active site and contribute to a network of conserved residues at the sites of magnesium adenosine triphosphate binding and catalysis. Amino acids associated with peptide recognition, nonconserved, extend over a large surface area.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Knighton, D R -- Zheng, J H -- Ten Eyck, L F -- Xuong, N H -- Taylor, S S -- Sowadski, J M -- RR01644/RR/NCRR NIH HHS/ -- T32CA09523/CA/NCI NIH HHS/ -- T32DK07233/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1991 Jul 26;253(5018):414-20.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, University of California, San Diego, La Jolla 92093-0654.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1862343" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Carrier Proteins/*chemistry/metabolism ; Computer Simulation ; Enzyme Inhibitors/*chemistry ; *Intracellular Signaling Peptides and Proteins ; Macromolecular Substances ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; Protein Kinases/*chemistry/metabolism ; X-Ray Diffraction
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    Interaction of the IL-2 receptor with the src-family kinase p56lck: identification of novel intermolecular association (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-06-14
    Description: In the interleukin-2 (IL-2) system, intracellular signal transduction is triggered by the beta chain of the IL-2 receptor (IL-2R beta); however, the responsible signaling mechanism remains unidentified. Evidence for the formation of a stable complex of IL-2R beta and the lymphocyte-specific protein tyrosine kinase p56lck is presented. Specific association sites were identified in the tyrosine kinase catalytic domain of p56lck and in the cytoplasmic domain of IL-2R beta. As a result of interaction, IL-2R beta became phosphorylated in vitro by p56lck. Treatment of T lymphocytes with IL-2 promotes p56lck kinase activity. These data suggest the participation of p56lck as a critical signaling molecule downstream of IL-2R via a novel interaction.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hatakeyama, M -- Kono, T -- Kobayashi, N -- Kawahara, A -- Levin, S D -- Perlmutter, R M -- Taniguchi, T -- New York, N.Y. -- Science. 1991 Jun 14;252(5012):1523-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Molecular and Cellular Biology, Osaka University, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2047859" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Animals ; Antigens, CD/immunology ; Base Sequence ; Binding Sites ; Cell Division/drug effects ; Cell Line ; Humans ; Interleukin-2/pharmacology ; Killer Cells, Natural/cytology/drug effects/immunology ; Lymphocyte Activation ; Lymphocyte Specific Protein Tyrosine Kinase p56(lck) ; Lymphocytes/drug effects/*immunology ; Macromolecular Substances ; Molecular Sequence Data ; Molecular Weight ; Oligonucleotide Probes ; Protein-Tyrosine Kinases/genetics/isolation & purification/*metabolism ; Receptors, Interleukin-2/genetics/isolation & purification/*physiology ; *Signal Transduction ; Transfection
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  • 40
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    A new cofactor in a prokaryotic enzyme: tryptophan tryptophylquinone as the redox prosthetic group in methylamine dehydrogenase (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-05-10
    Description: Methylamine dehydrogenase (MADH), an alpha 2 beta 2 enzyme from numerous methylotrophic soil bacteria, contains a novel quinonoid redox prosthetic group that is covalently bound to its small beta subunit through two amino acyl residues. A comparison of the amino acid sequence deduced from the gene sequence of the small subunit for the enzyme from Methylobacterium extorquens AM1 with the published amino acid sequence obtained by the Edman degradation method, allowed the identification of the amino acyl constituents of the cofactor as two tryptophyl residues. This information was crucial for interpreting 1H and 13C nuclear magnetic resonance, and mass spectral data collected for the semicarbazide- and carboxymethyl-derivatized bis(tripeptidyl)-cofactor of MADH from bacterium W3A1. The cofactor is composed of two cross-linked tryptophyl residues. Although there are many possible isomers, only one is consistent with all the data: The first tryptophyl residue in the peptide sequence exists as an indole-6,7-dione, and is attached at its 4 position to the 2 position of the second, otherwise unmodified, indole side group. Contrary to earlier reports, the cofactor of MADH is not 2,7,9-tricarboxypyrroloquinoline quinone (PQQ), a derivative thereof, or pro-PQQ. This appears to be the only example of two cross-linked, modified amino acyl residues having a functional role in the active site of an enzyme, in the absence of other cofactors or metal ions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉McIntire, W S -- Wemmer, D E -- Chistoserdov, A -- Lidstrom, M E -- GM 36296/GM/NIGMS NIH HHS/ -- HL 16251/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1991 May 10;252(5007):817-24.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Veterans Affairs Medical Center, San Francisco, CA 94121.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2028257" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Dipeptides/*chemistry ; Gram-Negative Aerobic Bacteria/enzymology ; Magnetic Resonance Spectroscopy ; Mass Spectrometry ; Molecular Sequence Data ; Oxidation-Reduction ; Oxidoreductases Acting on CH-NH Group Donors/*chemistry ; Quinones/*chemistry ; Tryptophan/chemistry
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Deregulation of a homeobox gene, HOX11, by the t(10;14) in T cell leukemia (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-07-05
    Description: Molecular cloning of the t(10;14)(q24;q11) recurrent breakpoint of T cell acute lymphoblastic leukemia has demonstrated a transcript for the candidate gene TCL3. Characterization of this gene from chromosome segment 10q24 revealed it to be a new homeobox, HOX11. The HOX11 homeodomain is most similar to that of the murine gene Hlx and possesses a markedly glycine-rich variable region and an acidic carboxyl terminus. HOX11, while expressed in liver, was not detected in normal thymus or T cells. This lineage-restricted homeobox gene is deregulated upon translocation into the T cell receptor locus where it may act as an oncogene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hatano, M -- Roberts, C W -- Minden, M -- Crist, W M -- Korsmeyer, S J -- 1 PO1 CA49712/CA/NCI NIH HHS/ -- CA 21765/CA/NCI NIH HHS/ -- CA 30969/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 Jul 5;253(5015):79-82.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Washington University School of Medicine, St. Louis, MO 63110.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1676542" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Blotting, Northern ; Chromosomes, Human, Pair 10 ; Chromosomes, Human, Pair 14 ; Cloning, Molecular ; *Gene Expression Regulation, Neoplastic ; *Genes, Homeobox ; Humans ; Leukemia-Lymphoma, Adult T-Cell/*genetics ; Mice ; Molecular Sequence Data ; Receptors, Antigen, T-Cell/genetics ; Restriction Mapping ; Sequence Homology, Nucleic Acid ; *Translocation, Genetic
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  • 42
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    Longitudinal studies of effects of divorce on children in Great Britain and the United States (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-06-07
    Description: National, longitudinal surveys from Great Britain and the United States were used to investigate the effects of divorce on children. In both studies, a subsample of children who were in two-parent families during the initial interview (at age 7 in the British data and at ages 7 to 11 in the U.S. data) were followed through the next interview (at age 11 and ages 11 to 16, respectively). At both time points in the British data, parents and teachers independently rated the children's behavior problems, and the children were given reading and mathematics achievement tests. At both time points in the U.S. data, parents rated the children's behavior problems. Children whose parents divorced or separated between the two time points were compared to children whose families remained intact. For boys, the apparent effect of separation or divorce on behavior problems and achievement at the later time point was sharply reduced by considering behavior problems, achievement levels, and family difficulties that were present at the earlier time point, before any of the families had broken up. For girls, the reduction in the apparent effect of divorce occurred to a lesser but still noticeable extent once preexisting conditions were considered.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cherlin, A J -- Furstenberg, F F Jr -- Chase-Lansdale, L -- Kiernan, K E -- Robins, P K -- Morrison, D R -- Teitler, J O -- HD25936/HD/NICHD NIH HHS/ -- New York, N.Y. -- Science. 1991 Jun 7;252(5011):1386-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Sociology, Johns Hopkins University, Baltimore, MD 21218.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2047851" target="_blank"〉PubMed〈/a〉
    Keywords: Achievement ; Adolescent ; Child ; Child Behavior ; Divorce/*psychology ; England ; Female ; Humans ; Longitudinal Studies ; Male ; United States
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    Toxic chemicals and toxic laws (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-09-09
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koshland, D E Jr -- New York, N.Y. -- Science. 1991 Aug 30;253(5023):949.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1887221" target="_blank"〉PubMed〈/a〉
    Keywords: *Legislation, Drug ; *Toxicology ; United States ; United States Environmental Protection Agency
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    The best of times, the worst of times (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-06-10
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Koshland, D E Jr -- New York, N.Y. -- Science. 1991 May 31;252(5010):1229.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1925529" target="_blank"〉PubMed〈/a〉
    Keywords: National Institutes of Health (U.S.) ; Research Support as Topic/*trends ; *Science ; United States
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  • 45
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    Identification of the 1H-NMR spectra of complex oligosaccharides with artificial neural networks (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-01
    Description: Artificial networks can be used to identify hydrogen nuclear magnetic resonance (1H-NMR) spectra of complex oligosaccharides. Feed-forward neural networks with back-propagation of errors can distinguish between spectra of oligosaccharides that differ by only one glycosyl residue in twenty. The artificial neural networks use features of the strongly overlapping region of the spectra (hump region) as well as features of the resolved regions of the spectra (structural reporter groups) to recognize spectra and efficiently recognized 1H-NMR spectra even when the spectra were perturbed by minor variations in their chemical shifts. Identification of spectra by neural network-based pattern recognition techniques required less than 0.1 second. It is anticipated that artificial neural networks can be used to identify the structures of any complex carbohydrate that has been previously characterized and for which a 1H-NMR spectrum is available.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Meyer, B -- Hansen, T -- Nute, D -- Albersheim, P -- Darvill, A -- York, W -- Sellers, J -- New York, N.Y. -- Science. 1991 Feb 1;251(4993):542-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Complex Carbohydrate Research Center, Athens, GA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1990429" target="_blank"〉PubMed〈/a〉
    Keywords: *Artificial Intelligence ; Carbohydrate Conformation ; Carbohydrate Sequence ; *Glucans ; Hydrogen ; Magnetic Resonance Spectroscopy/methods ; Molecular Sequence Data ; Oligosaccharides/*chemistry ; Polysaccharides/*chemistry ; *Xylans
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  • 46
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    Structural features that give rise to the unusual stability of RNA hairpins containing GNRA loops (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-07-12
    Description: The most frequently occurring RNA hairpins in 16S and 23S ribosomal RNA contain a tetranucleotide loop that has a GNRA consensus sequence. The solution structures of the GCAA and GAAA hairpins have been determined by nuclear magnetic resonance spectroscopy. Both loops contain an unusual G-A base pair between the first and last residue in the loop, a hydrogen bond between a G base and a phosphate, extensive base stacking, and a hydrogen bond between a sugar 2'-end OH and a base. These interactions explain the high stability of these hairpins and the sequence requirements for the variant and invariant nucleotides in the GNRA tetranucleotide loop family.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Heus, H A -- Pardi, A -- AI 27026/AI/NIAID NIH HHS/ -- AI 30726/AI/NIAID NIH HHS/ -- RR03283/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1991 Jul 12;253(5016):191-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry and Biochemistry, University of Colorado, Boulder 80309.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1712983" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Computer Graphics ; Hydrogen Bonding ; Magnetic Resonance Spectroscopy ; Models, Molecular ; Molecular Sequence Data ; Nucleic Acid Conformation ; Oligoribonucleotides/chemistry ; RNA/chemistry/*ultrastructure ; Structure-Activity Relationship ; Thermodynamics
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  • 47
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    Regulation of adhesion of ICAM-1 by the cytoplasmic domain of LFA-1 integrin beta subunit (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-03-29
    Description: Interactions between cytotoxic lymphocytes and their targets require the T cell antigen receptor (TCR) and the integrin lymphocyte function-associated molecule-1 (LFA-1, CD11a/CD18). LFA-1 is not constitutively avid for its counter-receptors, intercellular adhesion molecules (ICAMs)-1 and -2. Cross-linking of the TCR transiently converts LFA-1 to a high avidity state and thus provides a mechanism for regulating cellular adhesion and de-adhesion in an antigen-specific manner. Truncation of the cytoplasmic domain of the beta, but not the alpha, subunit of LFA-1 eliminated binding to ICAM-1 and sensitivity to phorbol esters. Thus, LFA-1 binding to ICAM-1 was found to be regulated by the cytoplasmic domain of the beta subunit of LFA-1.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hibbs, M L -- Xu, H -- Stacker, S A -- Springer, T A -- CA31798/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 Mar 29;251(5001):1611-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Blood Research, Harvard Medical School, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1672776" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; *Cell Adhesion ; Cell Adhesion Molecules/*physiology ; Cell Line ; Flow Cytometry ; Intercellular Adhesion Molecule-1 ; Lymphocyte Function-Associated Antigen-1/genetics/*physiology ; Macromolecular Substances ; Molecular Sequence Data ; Receptors, Antigen, T-Cell/*physiology ; Tetradecanoylphorbol Acetate/pharmacology ; Transfection
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    Name of the game? (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-09-06
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fox, C H -- New York, N.Y. -- Science. 1991 Sep 6;253(5024):1075.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1887232" target="_blank"〉PubMed〈/a〉
    Keywords: *Ethics, Professional ; Female ; Humans ; Laboratories/organization & administration ; Male ; Research Support as Topic ; Scientific Misconduct ; United States
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  • 49
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    A heparin-binding growth factor secreted by macrophage-like cells that is related to EGF (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-02-22
    Description: Macrophage-like U-937 cells secrete a 22-kilodalton heparin-binding growth factor that is mitogenic for BALB-3T3 fibroblasts and smooth muscle cells, but not endothelial cells. The amino acid sequence predicted from complementary DNA clones indicates that the mitogen is a new member of the epidermal growth factor (EGF) family. This heparin-binding EGF-like growth factor (HB-EGF) binds to EGF receptors on A-431 epidermoid carcinoma cells and smooth muscle cells, but is a far more potent mitogen for smooth muscle cells than is EGF. HB-EGF is also expressed in cultured human macrophages and may be involved in macrophage-mediated cellular proliferation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Higashiyama, S -- Abraham, J A -- Miller, J -- Fiddes, J C -- Klagsbrun, M -- CA37392/CA/NCI NIH HHS/ -- CA45548/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 Feb 22;251(4996):936-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Surgical Research, Children's Hospital, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1840698" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Cell Division/drug effects ; Cell Line ; Chromatography, Affinity ; Chromatography, High Pressure Liquid ; DNA Replication/drug effects ; Epidermal Growth Factor/genetics/isolation & ; purification/*metabolism/pharmacology ; Growth Substances/*metabolism ; Heparin/*metabolism ; Humans ; Kinetics ; Macrophages/*metabolism ; Molecular Sequence Data ; Protein Binding ; Receptor, Epidermal Growth Factor/metabolism ; Sequence Homology, Nucleic Acid
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    Carcinogens and human health: Part 2 (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-01-04
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rall, D P -- New York, N.Y. -- Science. 1991 Jan 4;251(4989):10-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1986406" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carcinogenicity Tests/standards ; Carcinogens/*toxicity ; Humans ; National Institutes of Health (U.S.) ; Neoplasms/*chemically induced ; *Toxicology ; United States
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    Expression cDNA cloning of the KGF receptor by creation of a transforming autocrine loop (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-01-04
    Description: An expression cloning strategy was devised to isolate the keratinocyte growth factor (KGF) receptor complementary DNA. NIH/3T3 fibroblasts, which secrete this epithelial cell-specific mitogen, were transfected with a keratinocyte expression complementary DNA library. Among several transformed foci identified, one demonstrated the acquisition of specific high-affinity KGF binding sites. The pattern of binding competition by related fibroblast growth factors (FGFs) indicated that this receptor had high affinity for acidic FGF as well as KGF. The rescued 4.2-kilobase complementary DNA was shown to encode a predicted membrane-spanning tyrosine kinase related to but distinct from the basic FGF receptor. This expression cloning approach may be generally applicable to the isolation of genes that constitute limiting steps in mitogenic signaling pathways.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miki, T -- Fleming, T P -- Bottaro, D P -- Rubin, J S -- Ron, D -- Aaronson, S A -- New York, N.Y. -- Science. 1991 Jan 4;251(4989):72-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Cellular and Molecular Biology, National Cancer Institute, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1846048" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Binding, Competitive ; Cell Line ; *Cloning, Molecular ; DNA/*genetics ; Fibroblast Growth Factor 10 ; Fibroblast Growth Factor 7 ; Fibroblast Growth Factors/metabolism ; Fibroblasts/metabolism ; *Gene Expression ; Growth Substances/metabolism ; Mice ; Molecular Sequence Data ; Nucleic Acid Hybridization ; Plasmids ; Receptor, Fibroblast Growth Factor, Type 2 ; Receptors, Cell Surface/*genetics/metabolism ; *Receptors, Fibroblast Growth Factor ; Recombinant Proteins/metabolism ; Transfection ; Transformation, Genetic
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    Atomic structure of acetylcholinesterase from Torpedo californica: a prototypic acetylcholine-binding protein (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-23
    Description: The three-dimensional structure of acetylcholinesterase from Torpedo californica electric organ has been determined by x-ray analysis to 2.8 angstrom resolution. The form crystallized is the glycolipid-anchored homodimer that was purified subsequent to solubilization with a bacterial phosphatidylinositol-specific phospholipase C. The enzyme monomer is an alpha/beta protein that contains 537 amino acids. It consists of a 12-stranded mixed beta sheet surrounded by 14 alpha helices and bears a striking resemblance to several hydrolase structures including dienelactone hydrolase, serine carboxypeptidase-II, three neutral lipases, and haloalkane dehalogenase. The active site is unusual because it contains Glu, not Asp, in the Ser-His-acid catalytic triad and because the relation of the triad to the rest of the protein approximates a mirror image of that seen in the serine proteases. Furthermore, the active site lies near the bottom of a deep and narrow gorge that reaches halfway into the protein. Modeling of acetylcholine binding to the enzyme suggests that the quaternary ammonium ion is bound not to a negatively charged "anionic" site, but rather to some of the 14 aromatic residues that line the gorge.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sussman, J L -- Harel, M -- Frolow, F -- Oefner, C -- Goldman, A -- Toker, L -- Silman, I -- New York, N.Y. -- Science. 1991 Aug 23;253(5022):872-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Structural Chemistry, Weizmann Institute of Science, Rehovot, Israel.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1678899" target="_blank"〉PubMed〈/a〉
    Keywords: Acetylcholine/*metabolism ; Acetylcholinesterase/*chemistry/metabolism ; Amino Acid Sequence ; Animals ; Binding Sites ; Cell Membrane/enzymology ; Chemistry, Physical ; Crystallization ; Electric Organ/*enzymology ; Glutamates ; Glutamic Acid ; Macromolecular Substances ; Molecular Sequence Data ; Molecular Structure ; Phosphatidylinositols/metabolism ; Physicochemical Phenomena ; Protein Conformation ; Sequence Homology, Nucleic Acid ; *Torpedo ; X-Ray Diffraction
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    Three-dimensional structures of the ligand-binding domain of the bacterial aspartate receptor with and without a ligand (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-12-09
    Description: The three-dimensional structure of an active, disulfide cross-linked dimer of the ligand-binding domain of the Salmonella typhimurium aspartate receptor and that of an aspartate complex have been determined by x-ray crystallographic methods at 2.4 and 2.0 angstrom (A) resolution, respectively. A single subunit is a four-alpha-helix bundle with two long amino-terminal and carboxyl-terminal helices and two shorter helices that form a cylinder 20 A in diameter and more than 70 A long. The two subunits in the disulfide-bonded dimer are related by a crystallographic twofold axis in the apo structure, but by a noncrystallographic twofold axis in the aspartate complex structure. The latter structure reveals that the ligand binding site is located more than 60 A from the presumed membrane surface and is at the interface of the two subunits. Aspartate binds between two alpha helices from one subunit and one alpha helix from the other in a highly charged pocket formed by three arginines. The comparison of the apo and aspartate complex structures shows only small structural changes in the individual subunits, except for one loop region that is disordered, but the subunits appear to change orientation relative to each other. The structures of the two forms of this protein provide a step toward understanding the mechanisms of transmembrane signaling.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Milburn, M V -- Prive, G G -- Milligan, D L -- Scott, W G -- Yeh, J -- Jancarik, J -- Koshland, D E Jr -- Kim, S H -- AI 30725/AI/NIAID NIH HHS/ -- DK09765/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1991 Nov 29;254(5036):1342-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Chemistry, University of California, Berkeley 94720.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1660187" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Aspartic Acid/metabolism ; Binding Sites ; Disulfides/analysis ; Hydrogen Bonding ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; *Receptors, Amino Acid ; Receptors, Cell Surface/*chemistry/metabolism ; Salmonella typhimurium/metabolism ; X-Ray Diffraction
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    Crystal structure of defensin HNP-3, an amphiphilic dimer: mechanisms of membrane permeabilization (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-03-22
    Description: Defensins (molecular weight 3500 to 4000) act in the mammalian immune response by permeabilizing the plasma membranes of a broad spectrum of target organisms, including bacteria, fungi, and enveloped viruses. The high-resolution crystal structure of defensin HNP-3 (1.9 angstrom resolution, R factor 0.19) reveals a dimeric beta sheet that has an architecture very different from other lytic peptides. The dimeric assembly suggests mechanisms by which defensins might bind to and permeabilize the lipid bilayer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hill, C P -- Yee, J -- Selsted, M E -- Eisenberg, D -- New York, N.Y. -- Science. 1991 Mar 22;251(5000):1481-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Eisenberg, Molecular Biology Institute, Los Angeles, CA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2006422" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Blood Proteins/chemistry/*ultrastructure ; Cell Membrane Permeability ; Crystallography ; Defensins ; Guinea Pigs ; Humans ; Macromolecular Substances ; Membrane Proteins/chemistry/ultrastructure ; Models, Molecular ; Molecular Sequence Data ; Molecular Structure ; Protein Conformation ; Rabbits ; Rats ; Structure-Activity Relationship ; X-Ray Diffraction ; *alpha-Defensins
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    A unique lab design fits the British to a tea (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-07-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, A -- New York, N.Y. -- Science. 1991 Jul 26;253(5018):377-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1862338" target="_blank"〉PubMed〈/a〉
    Keywords: Developmental Biology ; Employment ; Facility Design and Construction ; Foreign Professional Personnel ; Great Britain ; Humans ; *Laboratories ; Neoplasms ; *Research ; United States
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  • 56
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    Similarity of protein G and ubiquitin (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-10-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kraulis, P J -- New York, N.Y. -- Science. 1991 Oct 25;254(5031):581-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1658931" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Binding Sites, Antibody ; Immunoglobulin G ; Models, Molecular ; Molecular Sequence Data ; Nerve Tissue Proteins/*chemistry/genetics/immunology ; Protein Conformation ; Sequence Homology, Nucleic Acid ; Ubiquitins/*chemistry/genetics
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  • 57
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    Science funding (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-04-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Apr 26;252(5005):490-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2020847" target="_blank"〉PubMed〈/a〉
    Keywords: Government Agencies ; National Institutes of Health (U.S.) ; *Research Support as Topic ; United States
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    Mapping of DNA instability at the fragile X to a trinucleotide repeat sequence p(CCG)n (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-06-21
    Description: The sequence of a Pst I restriction fragment was determined that demonstrate instability in fragile X syndrome pedigrees. The region of instability was localized to a trinucleotide repeat p(CCG)n. The sequence flanking this repeat were identical in normal and affected individuals. The breakpoints in two somatic cell hybrids constructed to break at the fragile site also mapped to this repeat sequence. The repeat exhibits instability both when cloned in a nonhomologous host and after amplification by the polymerase chain reaction. These results suggest variation in the trinucleotide repeat copy number as the molecular basis for the instability and possibly the fragile site. This would account for the observed properties of this region in vivo and in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kremer, E J -- Pritchard, M -- Lynch, M -- Yu, S -- Holman, K -- Baker, E -- Warren, S T -- Schlessinger, D -- Sutherland, G R -- Richards, R I -- New York, N.Y. -- Science. 1991 Jun 21;252(5013):1711-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cytogenetics and Molecular Genetics, Adelaide Children's Hospital, South Australia.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1675488" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Blotting, Southern ; Chromosome Mapping ; Fragile X Syndrome/*genetics ; Humans ; Molecular Sequence Data ; Pedigree ; Polymerase Chain Reaction ; Polymorphism, Restriction Fragment Length ; Repetitive Sequences, Nucleic Acid ; Restriction Mapping ; X Chromosome/ultrastructure
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    Regulation of biotechnology (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-06-21
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Miller, H I -- Burris, R H -- Vidaver, A K -- New York, N.Y. -- Science. 1991 Jun 21;252(5013):1599-600.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2047865" target="_blank"〉PubMed〈/a〉
    Keywords: Biotechnology/*legislation & jurisprudence ; Containment of Biohazards/standards ; Government Agencies ; United States
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  • 60
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    HRR25, a putative protein kinase from budding yeast: association with repair of damaged DNA (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-08-30
    Description: In simple eukaryotes, protein kinases regulate mitotic and meiotic cell cycles, the response to polypeptide pheromones, and the initiation of nuclear DNA synthesis. The protein HRR25 from the budding yeast Saccharomyces cerevisiae was defined by the mutation hrr25-1. This mutation resulted in sensitivity to continuous expression of the HO double-strand endonuclease, to methyl methanesulfonate, and to x-irradiation. Homozygotes of hrr25-1 were unable to sporulate and disruption and deletion of HRR25 interfered with mitotic and meiotic cell division. Sequence analysis revealed two distinctive regions in the protein. The NH2-terminus of HRR25 contains the hallmark features of protein kinases, whereas the COOH-terminus is rich in proline and glutamine. Mutations in HRR25 at conserved residues found in all protein kinases inactivated the gene, and these mutants exhibited the hrr25 null phenotypes. Taken together, the hrr25 mutant phenotypes and the features of the gene product indicate that HRR25 is a distinctive member of the protein kinase superfamily.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoekstra, M F -- Liskay, R M -- Ou, A C -- DeMaggio, A J -- Burbee, D G -- Heffron, F -- New York, N.Y. -- Science. 1991 Aug 30;253(5023):1031-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Molecular Biology and Virology Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92186.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1887218" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; *Casein Kinase I ; *DNA Damage ; *DNA Repair ; Fungal Proteins/*genetics/metabolism ; Gene Library ; Genes, Fungal ; Meiosis ; Methyl Methanesulfonate/pharmacology ; Molecular Sequence Data ; Mutagenesis, Insertional ; Mutagenesis, Site-Directed ; Oligonucleotide Probes ; Phenotype ; *Protein Kinases ; Restriction Mapping ; Saccharomyces cerevisiae/enzymology/*genetics/physiology ; *Saccharomyces cerevisiae Proteins ; Sequence Homology, Nucleic Acid
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    Faculty retirement (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-08-02
    Description: I would like to point out several errors of citation at the end of my article ;;Cocaine addiction: Psychology and neuropsychology'' (29 Mar., p. 1580). In the References and Notes, reference 42 was missing. It should have read, ;;42. T. Kosten et al., in preparation.'' Also in the References and Notes, reference 44 should have been numbered 43. In the text, citation 43 should have been numbered 41. In figure 3, the attribution was missing. It should have read, ;;Reprinted with permission from T. Kosten et al. (42).''〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Friedman, P J -- New York, N.Y. -- Science. 1991 Aug 2;253(5019):494.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1857973" target="_blank"〉PubMed〈/a〉
    Keywords: Aged ; Databases, Bibliographic ; *Faculty ; Faculty, Medical ; Government Agencies ; Humans ; *Retirement ; United States
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    Demonstration that CFTR is a chloride channel by alteration of its anion selectivity (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-07-12
    Description: Expression of the cystic fibrosis transmembrane conductance regulator (CFTR) generates adenosine 3',5'-monophosphate (cAMP)-regulated chloride channels, indicating that CFTR is either a chloride channel or a chloride channel regulator. To distinguish between these possibilities, basic amino acids in the putative transmembrane domains were mutated. The sequence of anion selectivity of cAMP-regulated channels in cells containing either endogenous or recombinant CFTR was bromide greater than chloride greater than iodide greater than fluoride. Mutation of the lysines at positions 95 or 335 to acidic amino acids converted the selectivity sequence to iodide greater than bromide greater than chloride greater than fluoride. These data indicate that CFTR is a cAMP-regulated chloride channel and that lysines 95 and 335 determine anion selectivity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anderson, M P -- Gregory, R J -- Thompson, S -- Souza, D W -- Paul, S -- Mulligan, R C -- Smith, A E -- Welsh, M J -- New York, N.Y. -- Science. 1991 Jul 12;253(5016):202-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Department of Internal Medicine, University of Iowa College of Medicine, Iowa City 52242.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1712984" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Chloride Channels ; Chlorides/*physiology ; Cyclic AMP/physiology ; Cystic Fibrosis/physiopathology ; Cystic Fibrosis Transmembrane Conductance Regulator ; DNA Mutational Analysis ; Electric Conductivity ; HeLa Cells ; Humans ; In Vitro Techniques ; Ion Channels/genetics/*physiology ; Membrane Glycoproteins/genetics/physiology ; Membrane Potentials ; Membrane Proteins/genetics/*physiology ; Molecular Sequence Data ; Transfection
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    Requirement of nuclear prolactin for interleukin-2--stimulated proliferation of T lymphocytes (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-07-05
    Description: Prolactin (PRL) is necessary for the proliferation of cloned T lymphocytes in response to interleukin-2 (IL-2). Translocation of PRL into the nucleus occurs during IL-2--stimulated mitogenesis. Therefore, the function of intranuclear PRL in T cell proliferation was tested. Eukaryotic expression vectors were prepared to express wild-type PRL [PRL(WT)], PRL that lacks the signal sequence for translocation into the endoplasmic reticulum [PRL(ER-)], and chimeric PRL in which the signal peptide was replaced with the sequence that directs the nuclear translocation of the SV40 large T antigen [PRL(NT+)]. Expression of these constructs in a T cell line (Nb2) responsive to PRL and IL-2 resulted in localization of PRL in the extracellular milieu, cytoplasm, or nucleus, respectively. Stimulation with IL-2 alone resulted in a five- to tenfold increase in the incorporation of [3H]thymidine by cells expressing PRL(NT+) or PRL(WT) as compared to PRL(ER-) or the parental Nb2 cells. Only the PRL(NT+) clone proliferated continuously with IL-2 stimulation in the presence of antiserum to PRL. These results demonstrate that nuclear PRL is necessary for IL-2--stimulated proliferation and suggest that a peptide hormone can function in the nucleus without binding to its cell surface receptor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Clevenger, C V -- Altmann, S W -- Prystowsky, M B -- GM-13901/GM/NIGMS NIH HHS/ -- GM-36962/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Jul 5;253(5015):77-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia 19104.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2063207" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Biological Transport, Active ; Cell Cycle/drug effects ; Cell Nucleus/metabolism ; Drug Synergism ; Genetic Vectors ; In Vitro Techniques ; Interleukin-2/pharmacology ; Lymphocyte Activation/*drug effects ; Molecular Sequence Data ; Prolactin/pharmacokinetics/*pharmacology ; Rats ; Transfection
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    Global suppression of protein folding defects and inclusion body formation (1991)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1991-07-05
    Description: Amino acid substitutions at a site in the center of the bacteriophage protein P22 tailspike polypeptide chain suppress temperature-sensitive folding mutations at many sites throughout the chain. Characterization of the intracellular folding and chain assembly process reveals that the suppressors act in the folding pathway, inhibiting the aggregation of an early folding intermediate into the kinetically trapped inclusion body state. The suppressors alone increase the folding efficiency of the otherwise wild-type polypeptide chain without altering the stability or activity of the native state. These amino acid substitutions identify an unexpected aspect of the protein folding grammar--sequences within the chain that carry information inhibiting unproductive off-pathway conformations. Such mutations may serve to increase the recovery of protein products of cloned genes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mitraki, A -- Fane, B -- Haase-Pettingell, C -- Sturtevant, J -- King, J -- GMS17,980/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Jul 5;253(5015):54-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biology, Massachusetts Institute of Technology, Cambridge 02139.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1648264" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Coliphages ; DNA Mutational Analysis ; Electrophoresis, Polyacrylamide Gel ; Gene Expression Regulation ; Inclusion Bodies/*chemistry ; Molecular Sequence Data ; Mutation ; *Protein Conformation ; Viral Proteins/*chemistry ; Viral Tail Proteins
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    Control of alternative splicing by the differential binding of U1 small nuclear ribonucleoprotein particle (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-01
    Description: Cellular factors controlling alternative splicing of precursor messenger RNA are largely unknown, even though this process plays a central role in specifying the diversity of proteins in the eukaryotic cell. For the identification of such factors, a segment of the rat preprotachykinin gene was used in which differential expression of neuropeptides gamma and K is dependent on alternative splicing of the fourth exon (E4). Sequence variants of the three-exon segment, (E3-E4-E5) were created, resulting in a sensitive assay for factors mediating the splicing switch between E4-skipping and E4-inclusion. A dinucleotide mutation in the 5' splice site of E4 that increase base-pairing of this site to U1 small nuclear RNA resulted in uniform selection of E4, whereas a control mutation that destroyed base-pairing resulted in uniform E4-skipping. Affinity selection of spliceosomes formed on these functionally distinct substrates revealed that the extreme difference in splicing was mediated by differential binding of the U1 small nuclear ribonucleoprotein particle (snRNP) to the 5' splice site of E4. These data show that, apart from its established role in selecting 5' splice sites, U1 snRNP plays a fundamental role in 3' exon selection and provides insight into possible mechanisms of alternative splicing.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kuo, H C -- Nasim, F H -- Grabowski, P J -- GM-39695/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Mar 1;251(4997):1045-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Section of Biochemistry, Brown University, Providence, RI 02912.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1825520" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; DNA Mutational Analysis ; Exons ; Hydrogen Bonding ; Macromolecular Substances ; Molecular Sequence Data ; Protein Precursors/*genetics ; *RNA Splicing ; RNA, Messenger/*metabolism ; RNA, Small Nuclear/*physiology ; Rats ; Ribonucleoproteins/chemistry/*physiology ; Ribonucleoproteins, Small Nuclear ; Structure-Activity Relationship ; Tachykinins/*genetics
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    Pulmonary surfactant protein B (SP-B): structure-function relationships (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-25
    Description: SP-B is a protein in pulmonary surfactant that is, in greatest part, responsible for resistance to surface tension and prevention of collapse of pulmonary alveoli. Peptides of 21 residues, synthesized following the sequence of SP-B or resembling the hydrophobic and hydrophilic domains of SP-B (such as RLLLLRLLLLRLLLLRLLLLR, R, Arg, and L, Leu), enhanced the abilities of phospholipids to reduce surface tension both in vitro and in vivo. Intermittent positively charged residues were essential for this activity. The SP-B-like peptides were found by tryptophan fluorescence to partition within the phospholipid layer in contact with both polar head groups and acyl side chains. These data, together with findings that the SP-B-related peptides increase inter- and intramolecular order of the phospholipid layer, suggest that SP-B resists surface tension by increasing lateral stability of the phospholipid layer.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cochrane, C G -- Revak, S D -- GM-37696/GM/NIGMS NIH HHS/ -- HL-23584/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1991 Oct 25;254(5031):566-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Immunology, Scripps Research Institute, La Jolla, CA 92037.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948032" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Kinetics ; Molecular Sequence Data ; Peptides/*chemical synthesis/chemistry ; Phospholipids/metabolism ; Proteolipids/chemistry/*metabolism ; Pulmonary Surfactants/chemistry/*metabolism ; Structure-Activity Relationship ; Surface Tension
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    Translational potentiation of messenger RNA with secondary structure in Xenopus (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-15
    Description: Differential translation of messenger RNA (mRNA) with stable secondary structure in the 5' untranslated leader may contribute to the dramatic changes in protein synthetic patterns that occur during oogenesis and early development. Plasmids that contained the bacterial gene chloramphenicol acetyltransferase and which encoded mRNA with (hpCAT) or without (CAT) a stable hairpin secondary structure in the 5' noncoding region were transcribed in vitro, and the resulting mRNAs were injected into Xenopus oocytes, eggs, and early embryos. During early oogenesis, hpCAT mRNA was translated at less than 3 percent of the efficiency of CAT mRNA. The relative translational potential of hpCAT reached 100 percent in the newly fertilized egg and returned to approximately 3 percent after the midblastula transition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fu, L N -- Ye, R Q -- Browder, L W -- Johnston, R N -- New York, N.Y. -- Science. 1991 Feb 15;251(4995):807-10.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Sciences, University of Calgary, Alberta, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1990443" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Chloramphenicol O-Acetyltransferase/genetics ; Egg Proteins/biosynthesis/genetics ; Molecular Sequence Data ; Nucleic Acid Conformation ; Oogenesis/genetics ; Plasmids ; *Protein Biosynthesis ; RNA, Messenger/*genetics ; Xenopus laevis/embryology/*genetics
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    Identification of a mutation in porcine ryanodine receptor associated with malignant hyperthermia (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-07-26
    Description: Malignant hyperthermia (MH) causes neurological, liver, and kidney damage and death in humans and major economic losses in the swine industry. A single point mutation in the porcine gene for the skeletal muscle ryanodine receptor (ryr1) was found to be correlated with MH in five major breeds of lean, heavily muscled swine. Haplotyping suggests that the mutation in all five breeds has a common origin. Assuming that this is the causal mutation for MH, the development of a noninvasive diagnostic test will provide the basis for elimination of the MH gene or its controlled inclusion in swine breeding programs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Fujii, J -- Otsu, K -- Zorzato, F -- de Leon, S -- Khanna, V K -- Weiler, J E -- O'Brien, P J -- MacLennan, D H -- New York, N.Y. -- Science. 1991 Jul 26;253(5018):448-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Banting and Best Department of Medical Research, University of Toronto, Ontario, Canada.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1862346" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Codon/genetics ; Haplotypes ; Malignant Hyperthermia/genetics/*veterinary ; Molecular Sequence Data ; *Mutation ; Polymerase Chain Reaction ; Polymorphism, Genetic ; Receptors, Cholinergic/*genetics ; Restriction Mapping ; Ryanodine/metabolism ; Ryanodine Receptor Calcium Release Channel ; Species Specificity ; Swine ; Swine Diseases/*genetics
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    Carcinogens and human health: Part 3 (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cogliano, V J -- Farland, W H -- Preuss, P W -- Wiltse, J A -- Rhomberg, L R -- Chen, C W -- Mass, M J -- Nosnow, S -- White, P D -- Parker, J C -- New York, N.Y. -- Science. 1991 Feb 8;251(4994):606-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1992511" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Biological Assay ; *Carcinogens ; Humans ; Public Health ; Risk ; United States ; United States Environmental Protection Agency
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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    Cloning of a factor required for activity of the Ah (dioxin) receptor (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-05-17
    Description: The aryl hydrocarbon (Ah) receptor binds various environmental pollutants, such as polycyclic aromatic hydrocarbons, heterocyclic amines, and polychlorinated aromatic compounds (dioxins, dibenzofurans, and biphenyls), and mediates the carcinogenic effects of these agents. The complementary DNA and part of the gene for an 87-kilodalton human protein that is necessary for Ah receptor function have been cloned. The protein is not the ligand-binding subunit of the receptor but is a factor that is required for the ligand-binding subunit to translocate from the cytosol to the nucleus after binding ligand. The requirement for this factor distinguishes the Ah receptor from the glucocorticoid receptor, to which the Ah receptor has been presumed to be similar. Two portions of the 87-kilodalton protein share sequence similarities with two Drosophila proteins, Per and Sim. Another segment of the protein shows conformity to the consensus sequence for the basic helix-loop-helix motif found in proteins that bind DNA as homodimers or heterodimers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoffman, E C -- Reyes, H -- Chu, F F -- Sander, F -- Conley, L H -- Brooks, B A -- Hankinson, O -- CA 16048/CA/NCI NIH HHS/ -- CA 28868/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 May 17;252(5008):954-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pathology, University of California, Los Angeles 90024.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1852076" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Aryl Hydrocarbon Receptor Nuclear Translocator ; Base Sequence ; Cell Line ; Cell Nucleus/metabolism ; Cloning, Molecular ; Cytosol/metabolism ; *DNA-Binding Proteins ; Humans ; Macromolecular Substances ; Molecular Sequence Data ; Molecular Weight ; Oligonucleotide Probes ; Proteins/*genetics/metabolism ; RNA, Messenger/genetics ; Receptors, Aryl Hydrocarbon ; Receptors, Drug/genetics/*metabolism ; Sequence Homology, Nucleic Acid ; Tetrachlorodibenzodioxin/*metabolism ; *Transcription Factors ; Transfection
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    Now Dingell probes the Academy! (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1991 Nov 22;254(5035):1103.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1957159" target="_blank"〉PubMed〈/a〉
    Keywords: Economics ; Government Agencies ; Legislation as Topic ; *National Academy of Sciences (U.S.) ; United States
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    Specific DNA binding by c-Myb: evidence for a double helix-turn-helix-related motif (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-09-06
    Description: The c-Myb protein is a sequence-specific DNA binding protein that activates transcription in hematopoietic cells. Three imperfect repeats (R1, R2, and R3) that contain regularly spaced tryptophan residues form the DNA binding domain of c-Myb. A fragment of c-Myb that contained the R2 and R3 regions bound specifically to a DNA sequence recognized by c-Myb plus ten additional base pairs at the 3' end of the element. The R2R3 fragment was predicted to contain two consecutive helix-turn-helix (HTH) motifs with unconventional turns. Mutagenesis of amino acids in R2R3 at positions that correspond to DNA-contacting amino acids in other HTH-containing proteins abolished specific DNA binding without affecting nonspecific DNA interactions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gabrielsen, O S -- Sentenac, A -- Fromageot, P -- New York, N.Y. -- Science. 1991 Sep 6;253(5024):1140-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratoire d'Ingenierie des Proteines, Centre d'Etudes de Saclay, Gif-sur-Yvette, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1887237" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Binding Sites ; Chickens ; DNA/*metabolism ; DNA-Binding Proteins/*metabolism ; Molecular Sequence Data ; Mutagenesis, Site-Directed ; Oligonucleotide Probes ; Oncogenes ; Polymerase Chain Reaction ; Protein Conformation ; Proto-Oncogene Proteins/genetics/*metabolism ; Proto-Oncogene Proteins c-myb ; Recombinant Proteins/metabolism ; Restriction Mapping ; Sequence Homology, Nucleic Acid ; Transcription Factors/*metabolism
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    FDA committee raises AIDS vaccine hurdles (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1991 Nov 22;254(5035):1105.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1683494" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*therapy ; CD4-Positive T-Lymphocytes ; Clinical Trials as Topic ; Humans ; Immunization, Passive ; Leukocyte Count ; United States ; United States Food and Drug Administration ; Viral Vaccines/*therapeutic use
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    A 32-kD GTP-binding protein associated with the CD4-p56lck and CD8-p56lck T cell receptor complexes (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-18
    Description: The guanosine triphosphate (GTP)-binding proteins include signal-transducing heterotrimeric G proteins (for example, Gs, Gi), smaller GTP-binding proteins that function in protein sorting, and the oncogenic protein p21ras. The T cell receptor complexes CD4-p56lck and CD8-p56lck were found to include a 32- to 33-kilodalton phosphoprotein (p32) that was recognized by an antiserum to a consensus GTP-binding region in G proteins. Immunoprecipitated CD4 and CD8 complexes bound GTP and hydrolyzed it to guanosine diphosphate (GDP). The p32 protein was covalently linked to [alpha-32P]GTP by ultraviolet photoaffinity labeling. These results demonstrate an interaction between T cell receptor complexes and an intracellular GTP-binding protein.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Telfer, J C -- Rudd, C E -- New York, N.Y. -- Science. 1991 Oct 18;254(5030):439-41.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Tumor Immunology, Dana-Farber Cancer Institute, Boston, MA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1925604" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Antigens, CD4/*metabolism ; Antigens, CD8/*metabolism ; Cell Line ; GTP-Binding Proteins/*metabolism ; Humans ; Lymphocyte Specific Protein Tyrosine Kinase p56(lck) ; Molecular Sequence Data ; Phosphoproteins/metabolism ; Precipitin Tests ; Protein Binding ; Protein-Tyrosine Kinases/*metabolism ; Receptors, Antigen, T-Cell/*metabolism
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    Fight erupts over DNA fingerprinting (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-12-20
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1991 Dec 20;254(5039):1721-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1763321" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; *Crime ; DNA/genetics ; *DNA Fingerprinting ; Genetic Variation ; Humans ; United States
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    Another sex survey bites the dust (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-09-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moffat, A S -- New York, N.Y. -- Science. 1991 Sep 27;253(5027):1483.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1896855" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/prevention & control ; Adolescent ; Adult ; Female ; *Health Surveys ; Humans ; Male ; National Institutes of Health (U.S.) ; *Sexual Behavior ; Sexually Transmitted Diseases/prevention & control ; United States
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    Drug abuse policy (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-04-05
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Apr 5;252(5002):11-4.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2011745" target="_blank"〉PubMed〈/a〉
    Keywords: Humans ; *Substance-Related Disorders ; United States
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    AIDS vaccine meeting: international trials soon (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1991 Nov 1;254(5032):647.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948042" target="_blank"〉PubMed〈/a〉
    Keywords: *AIDS Vaccines ; Acquired Immunodeficiency Syndrome/prevention & control ; Animals ; Clinical Trials as Topic ; Humans ; National Institutes of Health (U.S.) ; United States
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    OSTP to wade into gene patent quagmire (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-22
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1991 Nov 22;254(5035):1104-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1957160" target="_blank"〉PubMed〈/a〉
    Keywords: Biotechnology ; *Dna ; *Human Genome Project ; Humans ; National Institutes of Health (U.S.) ; *Patents as Topic ; United States
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    GRAIL seeks out genes buried in DNA sequence (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1991 Nov 8;254(5033):805.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948063" target="_blank"〉PubMed〈/a〉
    Keywords: *Artificial Intelligence ; Base Sequence ; DNA/*genetics ; *Genes ; *Genome, Human ; Humans ; Molecular Sequence Data ; Software
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    Triplex DNA finally comes of age (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-06-07
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Moffat, A S -- New York, N.Y. -- Science. 1991 Jun 7;252(5011):1374-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2047850" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; DNA/*chemistry ; DNA Replication ; Genes, myc ; Models, Molecular ; Molecular Sequence Data ; Transcription, Genetic/drug effects
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    Curing the Orphan Drug Act (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-08
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thoene, J G -- New York, N.Y. -- Science. 1991 Mar 8;251(4998):1158-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2006403" target="_blank"〉PubMed〈/a〉
    Keywords: Biomedical Research ; Federal Government ; *Government Regulation ; *Legislation, Drug ; *Orphan Drug Production ; United States ; United States Dept. of Health and Human Services ; United States Food and Drug Administration
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    Gallo investigation raises new questions (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Oct 25;254(5031):507.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948019" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*diagnosis ; France ; HIV/classification/*isolation & purification ; History, 20th Century ; Humans ; *National Institutes of Health (U.S.) ; *Scientific Misconduct ; United States
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 84
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    Is NIH failing an AIDS "challenge"? (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-01
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cohen, J -- New York, N.Y. -- Science. 1991 Feb 1;251(4993):518-20.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1990426" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/*prevention & control ; Animals ; Humans ; *National Institutes of Health (U.S.) ; *Research ; United States ; *Viral Vaccines
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 85
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    Feminist group dissents on RU-486 use for abortion (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoffman, M -- New York, N.Y. -- Science. 1991 Oct 11;254(5029):199.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1925575" target="_blank"〉PubMed〈/a〉
    Keywords: *Abortion, Induced ; Female ; Humans ; Mifepristone/*therapeutic use ; Pregnancy ; United States
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 86
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    Regulation of the apolipoprotein AI gene by ARP-1, a novel member of the steroid receptor superfamily (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-01
    Description: Apolipoprotein AI (apoAI) is a lipid-binding protein that participates in the transport of cholesterol and other lipids in the plasma. A complementary DNA clone for a protein that bound to regulatory elements of the apoAI gene was isolated. This protein, designated apoAI regulatory protein-1 (ARP-1), is a novel member of the steroid hormone receptor superfamily. ARP-1 bound to DNA as a dimer, and its dimerization domain was localized to the COOH-terminal region. ARP-1 also bound to a thyroid hormone-responsive element and to regulatory regions of the apoB, apoCIII, insulin, and ovalbumin genes. In cotransfection experiments, ARP-1 downregulated the apoAI gene. The involvement of ARP-1 in the regulation of apoAI gene expression suggests that it may participate in lipid metabolism and cholesterol homeostasis.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ladias, J A -- Karathanasis, S K -- New York, N.Y. -- Science. 1991 Feb 1;251(4993):561-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Cardiology, Children's Hospital, Boston, MA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1899293" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Apolipoprotein A-I ; Apolipoproteins A/*genetics ; Base Sequence ; COUP Transcription Factor II ; COUP Transcription Factors ; Cloning, Molecular ; DNA/metabolism ; DNA-Binding Proteins/*metabolism ; Gene Expression Regulation ; Humans ; Lipoproteins, HDL/*genetics ; Molecular Sequence Data ; Oligonucleotide Probes ; Receptors, Steroid/*metabolism ; Regulatory Sequences, Nucleic Acid ; *Transcription Factors
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  • 87
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    Lead control (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-25
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Oct 25;254(5031):500-1.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1948018" target="_blank"〉PubMed〈/a〉
    Keywords: Child ; Humans ; Lead Poisoning/*prevention & control ; Paint/toxicity ; United States ; United States Environmental Protection Agency ; United States Public Health Service
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 88
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    Characterization of a human TAR RNA-binding protein that activates the HIV-1 LTR (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-29
    Description: Human immunodeficiency virus type 1 (HIV-1) gene expression is activated by Tat, a virally encoded protein. Tat trans-activation requires viral (trans-activation--responsive; TAR) RNA sequences located in the R region of the long terminal repeat (LTR). Existing evidence suggests that Tat probably cooperates with cellular factors that bind to TAR RNA in the overall trans-activation process. A HeLa complementary DNA was isolated and characterized that encodes a TAR RNA-binding protein (TRBP). TRBP activated the HIV-1 LTR and was synergistic with Tat function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gatignol, A -- Buckler-White, A -- Berkhout, B -- Jeang, K T -- New York, N.Y. -- Science. 1991 Mar 29;251(5001):1597-600.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Molecular Microbiology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2011739" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Binding Sites ; Carrier Proteins/*genetics ; Endoribonucleases/genetics ; Escherichia coli/enzymology ; *Escherichia coli Proteins ; Gene Products, tat/metabolism ; *HIV Long Terminal Repeat ; HIV-1/*genetics ; Humans ; Molecular Sequence Data ; Nucleic Acid Conformation ; Plasmids ; RNA, Viral/genetics ; *RNA-Binding Proteins ; Ribonuclease III ; Sequence Homology, Nucleic Acid ; tat Gene Products, Human Immunodeficiency Virus
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 89
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    Cystic fibrosis transmembrane conductance regulator: nucleotide binding to a synthetic peptide (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-02-01
    Description: Multiple mutations in the gene responsible for cystic fibrosis are located within a region predicted to encode a nucleotide-binding fold in the amino terminal half of the cystic fibrosis transmembrane conductance regulator protein. A 67-amino acid peptide (P-67) that corresponds to the central region of this putative nucleotide binding site was chemically synthesized and purified. This peptide bound adenine nucleotides. The apparent dissociation constants (Kd's) for the trinitrophenyl (TNP) adenine nucleotides, TNP-adenosine triphosphate, TNP-adenosine diphosphate, and TNP-adenosine monophosphate, were 300 nanomolar, 200 nanomolar, and greater than 1 micromolar, respectively. The Kd for adenosine triphosphate was 300 micromolar. Circular dichroism spectroscopy was used to show that P-67 assumes a predominantly beta sheet structure in solution, a finding that is consistent with secondary structure predictions. On the basis of this information, the phenylalanine at position 508, which is deleted in approximately 70 percent of individuals with cystic fibrosis, was localized to a beta strand within the nucleotide binding peptide. Deletion of this residue is predicted to induce a significant structural change in the beta strand and altered nucleotide binding.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thomas, P J -- Shenbagamurthi, P -- Ysern, X -- Pedersen, P L -- CA 10951/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 Feb 1;251(4993):555-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1703660" target="_blank"〉PubMed〈/a〉
    Keywords: Adenine Nucleotides/*metabolism ; Amino Acid Sequence ; Binding Sites ; Chromatography, High Pressure Liquid ; Cystic Fibrosis/*genetics/metabolism ; Cystic Fibrosis Transmembrane Conductance Regulator ; Humans ; Membrane Proteins/*genetics/isolation & purification/metabolism ; Molecular Sequence Data
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  • 90
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    Identification of Ets- and notch-related subunits in GA binding protein (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-16
    Description: Recombinant cDNA clones that encode two distinct subunits of the transcription factor GA binding protein (GABP) have been isolated. The predicted amino acid sequence of one subunit, GABP alpha, exhibits similarity to the sequence of the product of the ets-1 protooncogene in a region known to encompass the Ets DNA binding domain. The sequence of the second subunit, GABP beta, contains four 33-amino acid repeats located close to the NH2-terminus of the subunit. The sequences of these repeats are similar to repeats in several transmembrane proteins, including Notch from Drosophila melanogaster and Glp-1 and Lin-12 from Caenorhabditis elegans. Avid, sequence-specific binding to DNA required the presence of both polypeptides, revealing a conceptual convergence of nuclear transforming proteins and membrane-anchored proteins implicated in developmentally regulated signal transduction processes.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉LaMarco, K -- Thompson, C C -- Byers, B P -- Walton, E M -- McKnight, S L -- New York, N.Y. -- Science. 1991 Aug 16;253(5021):789-92.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Research Laboratories, Carnegie Institution of Washington, Department of Embryology, Baltimore, MD 21210.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1876836" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Blotting, Northern ; Cloning, Molecular ; DNA-Binding Proteins/*chemistry/genetics ; GA-Binding Protein Transcription Factor ; Gene Expression ; Molecular Sequence Data ; Nuclear Proteins/chemistry/genetics ; Peptides/chemistry ; Proto-Oncogene Protein c-ets-1 ; Proto-Oncogene Proteins/chemistry ; Proto-Oncogene Proteins c-ets ; RNA, Messenger/genetics ; Rats ; Recombinant Proteins ; Transcription Factors/*chemistry/genetics
    Print ISSN: 0036-8075
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 91
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    Convergence of Ets- and notch-related structural motifs in a heteromeric DNA binding complex (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-16
    Description: Analysis of the heteromeric DNA binding protein GABP has revealed the interaction of two distinct peptide sequence motifs normally associated with proteins located in different cellular compartments. The alpha subunit of GABP contains an 85-amino acid segment related to the Ets family of DNA binding proteins. The ETS domain of GABP alpha facilitates weak binding to DNA and, together with an adjacent segment of 37 amino acids, mediates stable interaction with GABP beta. The beta subunit of GABP contains four imperfect repeats of a sequence present in several transmembrane proteins including the product of the Notch gene of Drosophila melanogaster. These amino-terminal repeats of GABP beta mediate stable interaction with GABP alpha and, when complexed with GABP alpha, directly contact DNA. These observations provide evidence for a distinct biochemical role for the 33-amino acid repeats, and suggest that they may serve as a module for the generation of specific dimerization interfaces.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Thompson, C C -- Brown, T A -- McKnight, S L -- New York, N.Y. -- Science. 1991 Aug 16;253(5021):762-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Research Laboratories, Carnegie Institution of Washington, Department of Embryology, Baltimore, MD 21210.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1876833" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Binding Sites ; Cross-Linking Reagents ; DNA/metabolism ; DNA-Binding Proteins/*chemistry/metabolism ; GA-Binding Protein Transcription Factor ; Macromolecular Substances ; Molecular Sequence Data ; Molecular Weight ; Multigene Family ; Nuclear Proteins/*chemistry/metabolism ; Oligonucleotides/chemistry ; Proto-Oncogene Proteins/chemistry ; Proto-Oncogene Proteins c-ets ; Rats ; Recombinant Proteins ; Structure-Activity Relationship ; Transcription Factors/*chemistry/metabolism
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 92
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    Genome patent fight erupts (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-10-11
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1991 Oct 11;254(5029):184-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1925568" target="_blank"〉PubMed〈/a〉
    Keywords: DNA/genetics ; Federal Government ; *Genome, Human ; Human Genome Project ; Humans ; Internationality ; *National Institutes of Health (U.S.) ; *Patents as Topic ; United States
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  • 93
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    A component of calcium-activated potassium channels encoded by the Drosophila slo locus (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-02
    Description: Calcium-activated potassium channels mediate many biologically important functions in electrically excitable cells. Despite recent progress in the molecular analysis of voltage-activated K+ channels, Ca(2+)-activated K+ channels have not been similarly characterized. The Drosophila slowpoke (slo) locus, mutations of which specifically abolish a Ca(2+)-activated K+ current in muscles and neurons, provides an opportunity for molecular characterization of these channels. Genomic and complementary DNA clones from the slo locus were isolated and sequenced. The polypeptide predicted by slo is similar to voltage-activated K+ channel polypeptides in discrete domains known to be essential for function. Thus, these results indicate that slo encodes a structural component of Ca(2+)-activated K+ channels.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Atkinson, N S -- Robertson, G A -- Ganetzky, B -- NS15390/NS/NINDS NIH HHS/ -- T32 GM07131/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1991 Aug 2;253(5019):551-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Genetics, University of Wisconsin, Madison 53706.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1857984" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Calcium/pharmacology ; Chromosome Aberrations ; Chromosome Deletion ; Cloning, Molecular ; DNA/genetics/isolation & purification ; Drosophila/*genetics/physiology ; Exons ; Molecular Sequence Data ; Nucleic Acid Hybridization ; Phenotype ; Potassium Channels/drug effects/*genetics/physiology ; Protein Conformation ; Sequence Homology, Nucleic Acid ; Transcription, Genetic ; Translocation, Genetic
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 94
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    France set to reopen AIDS pact? (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-09-27
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Coles, P -- New York, N.Y. -- Science. 1991 Sep 27;253(5027):1479.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1896853" target="_blank"〉PubMed〈/a〉
    Keywords: *Acquired Immunodeficiency Syndrome ; France ; HIV/isolation & purification ; Humans ; National Institutes of Health (U.S.) ; *Publishing ; Scientific Misconduct ; United States
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  • 95
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    Cell-free, de novo synthesis of poliovirus (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-12-13
    Description: Cell-free translation of poliovirus RNA in an extract of uninfected human (HeLa) cells yielded viral proteins through proteolysis of the polyprotein. In the extract, newly synthesized proteins catalyzed poliovirus-specific RNA synthesis, and formed infectious poliovirus de novo. Newly formed virions were neutralized by type-specific antiserum, and infection of human cells with them was prevented by poliovirus receptor-specific antibodies. Poliovirus synthesis was increased nearly 70-fold when nucleoside triphosphates were added, but it was abolished in the presence of inhibitors of translation or viral genome replication. The ability to conduct cell-free synthesis of poliovirus will aid in the study of picornavirus proliferation and in the search for the control of picornaviral disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Molla, A -- Paul, A V -- Wimmer, E -- AI-15122/AI/NIAID NIH HHS/ -- CA-28146/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1991 Dec 13;254(5038):1647-51.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Microbiology, School of Medicine, State University of New York, Stony Brook 11794.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1661029" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cell-Free System ; HeLa Cells ; Humans ; In Vitro Techniques ; Molecular Sequence Data ; Molecular Weight ; Oligodeoxyribonucleotides/chemistry ; Poliovirus/*growth & development ; Polymerase Chain Reaction ; RNA, Viral/analysis/biosynthesis ; Time Factors ; Viral Proteins/biosynthesis/chemistry ; *Virus Replication
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 96
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    New role found for a common protein "motif" (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-08-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoffman, M -- New York, N.Y. -- Science. 1991 Aug 16;253(5021):742.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1831563" target="_blank"〉PubMed〈/a〉
    Keywords: Ankyrins ; Base Sequence ; Binding Sites ; Blood Proteins/*chemistry ; Membrane Proteins/*chemistry ; Molecular Sequence Data ; *Protein Binding ; Structure-Activity Relationship ; Transcription Factors/chemistry
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  • 97
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    Advisory committee urges changes at OSI (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-11-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibbons, A -- New York, N.Y. -- Science. 1991 Nov 29;254(5036):1287-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1962186" target="_blank"〉PubMed〈/a〉
    Keywords: Advisory Committees ; *Biomedical Research ; Federal Government ; *Government Regulation ; *National Institutes of Health (U.S.) ; Research/*standards ; *Scientific Misconduct ; United States ; United States Public Health Service
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 98
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    Warm praise for a whistle-blower (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Mar 29;251(5001):1552.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2011730" target="_blank"〉PubMed〈/a〉
    Keywords: *Ethics, Professional ; *National Institutes of Health (U.S.) ; Periodicals as Topic ; Publishing ; *Scientific Misconduct ; United States
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 99
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    Will NIH be able to sustain its new, hard-hitting approach to investigating allegations of scientific misconduct? (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-03-29
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉New York, N.Y. -- Science. 1991 Mar 29;251(5001):1551.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2011729" target="_blank"〉PubMed〈/a〉
    Keywords: *National Institutes of Health (U.S.) ; *Scientific Misconduct ; United States
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 100
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    Report card on the genome project (1991)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1991-07-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Roberts, L -- New York, N.Y. -- Science. 1991 Jul 26;253(5018):376.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1862337" target="_blank"〉PubMed〈/a〉
    Keywords: Chromosome Mapping ; Chromosomes, Human, Pair 19 ; *Human Genome Project ; Humans ; National Institutes of Health (U.S.) ; United States ; Universities
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    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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