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  • Polymerase Chain Reaction  (48)
  • American Association for the Advancement of Science (AAAS)  (48)
  • Cambridge University Press
  • 2015-2019
  • 1995-1999
  • 1990-1994  (48)
  • 1970-1974
  • 1992  (48)
Collection
Keywords
Publisher
  • American Association for the Advancement of Science (AAAS)  (48)
  • Cambridge University Press
Years
  • 2015-2019
  • 1995-1999
  • 1990-1994  (48)
  • 1970-1974
Year
  • 1
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    Modulation of DNA binding specificity by alternative splicing of the Wilms tumor wt1 gene transcript (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-07-10
    Description: The technique of whole-genome polymerase chain reaction was used to study the DNA binding properties of the product of the wt1 gene. The zinc finger region of this gene is alternatively spliced such that the major transcript encodes a protein with three extra amino acids between the third and fourth fingers. The minor form of the protein binds specifically to DNA. It is now shown that the major form of wt1 messenger RNA encodes a protein that binds to DNA with a specificity that differs from that of the minor form. Therefore, alternative splicing within the DNA binding domain of a transcription factor can generate proteins with distinct DNA binding specificities and probably different physiological targets.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bickmore, W A -- Oghene, K -- Little, M H -- Seawright, A -- van Heyningen, V -- Hastie, N D -- New York, N.Y. -- Science. 1992 Jul 10;257(5067):235-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Medical Research Council Human Genetics Unit, Western General Hospital, Edinburgh, Scotland.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1321494" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Base Sequence ; Binding Sites/*genetics ; Binding, Competitive ; Chromosomes, Human, Pair 11 ; DNA/*metabolism ; DNA-Binding Proteins/genetics/*metabolism ; Humans ; Molecular Sequence Data ; Polymerase Chain Reaction ; *RNA Splicing ; RNA, Messenger/*metabolism ; Sequence Homology, Nucleic Acid ; Transcription, Genetic ; WT1 Proteins ; Wilms Tumor/*genetics ; Zinc Fingers/genetics
    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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  • 2
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    Identification of ras oncogene mutations in the stool of patients with curable colorectal tumors (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-04-03
    Description: Colorectal (CR) tumors are usually curable if detected before metastasis. Because genetic alterations are associated with the development of these tumors, mutant genes may be found in the stool of individuals with CR neoplasms. The stools of nine patients whose tumors contained mutations of K-ras were analyzed. In eight of the nine cases, the ras mutations were detectable in DNA purified from the stool. These patients included those with benign and malignant neoplasms from proximal and distal colonic epithelium. Thus, colorectal tumors can be detected by a noninvasive method based on the molecular pathogenesis of the disease.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sidransky, D -- Tokino, T -- Hamilton, S R -- Kinzler, K W -- Levin, B -- Frost, P -- Vogelstein, B -- CA06973/CA/NCI NIH HHS/ -- CA35494/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1992 Apr 3;256(5053):102-5.〈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/1566048" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Amino Acid Sequence ; Base Sequence ; Blotting, Southern ; Carcinoma/diagnosis/*genetics/pathology ; Colonic Neoplasms/diagnosis/*genetics/pathology ; DNA, Neoplasm/genetics/*isolation & purification ; Feces/chemistry ; Female ; *Genes, ras ; Humans ; Male ; Middle Aged ; Molecular Sequence Data ; *Mutation ; Oligodeoxyribonucleotides ; Polymerase Chain Reaction ; Prognosis ; Rectal Neoplasms/diagnosis/*genetics/pathology
    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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  • 3
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    Carnivorous plants: phylogeny and structural evolution (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-09-11
    Description: The carnivorous habit in flowering plants represents a grade of structural organization. Different morphological features associated with the attraction, trapping, and digestion of prey characterize a diversity of specialized forms, including the familiar pitcher and flypaper traps. Phylogenetic analysis of nucleotide sequence data from the plastic rbcL gene indicates that both carnivory and stereotyped trap forms have arisen independently in different lineages of angiosperms. Furthermore, these results demonstrate that flypaper traps share close common ancestry with all other trap forms. Recognition of these patterns of diversification may provide ideal, naturally occurring systems for studies of developmental processes underlying macromorphological evolution in angiosperms.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Albert, V A -- Williams, S E -- Chase, M W -- New York, N.Y. -- Science. 1992 Sep 11;257(5076):1491-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1523408" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; *Biological Evolution ; Molecular Sequence Data ; *Phylogeny ; *Plant Physiological Phenomena ; Plants/*classification/genetics ; Polymerase Chain Reaction ; Restriction Mapping
    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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  • 4
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    Selective transmission of human immunodeficiency virus type-1 variants from mothers to infants (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-02-28
    Description: Multiple human immunodeficiency virus type-1 sequences from the V3 and V4-V5 regions of the envelope gene were analyzed from three mother-infant pairs. The infants' viral sequences were less diverse than those of their mothers. In two pairs, a proviral form infrequently found in the mother predominated in her infant. A conserved N-linked glycosylation site within the V3 region, present in each mother's sequence set, was absent in all of the infants' sequence sets. These findings demonstrate that a minor subset of maternal virus is transmitted to the infant.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Wolinsky, S M -- Wike, C M -- Korber, B T -- Hutto, C -- Parks, W P -- Rosenblum, L L -- Kunstman, K J -- Furtado, M R -- Munoz, J L -- AI-32535/AI/NIAID NIH HHS/ -- HD26619-01/HD/NICHD NIH HHS/ -- P01-25569/PHS HHS/ -- New York, N.Y. -- Science. 1992 Feb 28;255(5048):1134-7.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, Northwestern University Medical School, Chicago, IL 60611.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1546316" target="_blank"〉PubMed〈/a〉
    Keywords: Acquired Immunodeficiency Syndrome/congenital/microbiology/*transmission ; Amino Acid Sequence ; Base Sequence ; Female ; Genotype ; Glycosylation ; HIV Antigens/genetics ; HIV Envelope Protein gp120/genetics/immunology ; HIV-1/*genetics/immunology ; Humans ; Infant ; Maternal-Fetal Exchange ; Molecular Sequence Data ; Oligodeoxyribonucleotides/chemistry ; Polymerase Chain Reaction ; Pregnancy ; Selection, Genetic ; Sequence Alignment
    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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    Body-wall muscle formation in Caenorhabditis elegans embryos that lack the MyoD homolog hlh-1 (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-04-10
    Description: The myoD family of DNA binding proteins has been implicated in the control of myogenesis in a variety of organisms. Searches for homologs in the nematode Caenorhabditis elegans yielded only one gene, designated hlh-1, expressed in body-wall muscle cells and their precursors. To assess the role of hlh-1 in C. elegans myogenesis, genetic deficiencies spanning the hlh-1 locus were isolated after gamma irradiation. Embryos homozygous for these deficiencies exhibited extensive body-wall muscle differentiation, including expression of several characteristic myofilament proteins and weak contracile behavior. Thus, zygotic hlh-1 expression was not required for body-wall muscle precursors to adopt muscle cell fates.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Chen, L -- Krause, M -- Draper, B -- Weintraub, H -- Fire, A -- R01 GM037706/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1992 Apr 10;256(5054):240-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Carnegie Institution of Washington, Baltimore, MD 21210.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1314423" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Caenorhabditis/embryology/genetics/*physiology ; Cell Differentiation ; *Chromosome Deletion ; Chromosome Mapping ; Crosses, Genetic ; DNA/genetics/isolation & purification ; DNA-Binding Proteins/*genetics ; Embryo, Nonmammalian/cytology/physiology/radiation effects ; Gamma Rays ; Homozygote ; Molecular Sequence Data ; Multigene Family ; Muscle Proteins/*genetics ; Muscles/*embryology/physiology/radiation effects ; MyoD Protein ; Oligodeoxyribonucleotides ; Polymerase Chain Reaction ; Sequence Homology, Nucleic Acid
    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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  • 6
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    Selection of a ribozyme that functions as a superior template in a self-copying reaction (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-12-18
    Description: The sunY ribozyme is derived from a self-splicing RNA group I intron. This ribozyme was chosen as a starting point for the design of a self-replicating RNA because of its small size. As a means of facilitating the self-replication process, the size of this ribozyme was decreased by the deletion of nonconserved structural domains; however, when such deletions were made, there were severe losses of enzymatic activity. In vitro genetic selection was used to identify mutations that reactivate a virtually inactive sunY deletion mutant. A selected mutant with five substitution mutations scattered throughout the primary sequence showed greater catalytic activity than the original ribozyme under the selection conditions. The sunY ribozyme and its small selected variant can both catalyze template-directed oligonucleotide assembly. The small size and reduced secondary structure of the selected variant results in an enhancement, relative to that of the original ribozyme, of its rate of self-copying. This engineered ribozyme is able to function effectively both as a catalyst and as a template in self-copying reactions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Green, R -- Szostak, J W -- New York, N.Y. -- Science. 1992 Dec 18;258(5090):1910-5.〈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/1470913" target="_blank"〉PubMed〈/a〉
    Keywords: Bacteriophage T4/*genetics ; Base Sequence ; Escherichia coli/*genetics ; Exons ; Introns ; Models, Structural ; Molecular Sequence Data ; *Nucleic Acid Conformation ; Oligodeoxyribonucleotides ; Oligoribonucleotides ; Polymerase Chain Reaction ; RNA, Catalytic/*biosynthesis/chemistry/genetics ; Sequence Deletion ; Templates, Genetic
    Print ISSN: 0036-8075
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  • 7
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    A human gene responsible for Zellweger syndrome that affects peroxisome assembly (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-02-28
    Description: The primary defect arising from Zellweger syndrome appears to be linked to impaired assembly of peroxisomes. A human complementary DNA has been cloned that complements the disease's symptoms (including defective peroxisome assembly) in fibroblasts from a patient with Zellweger syndrome. The cause of the syndrome in this patient was a point mutation that resulted in the premature termination of peroxisome assembly factor-1. The homozygous patient apparently inherited the mutation from her parents, each of whom was heterozygous for that mutation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Shimozawa, N -- Tsukamoto, T -- Suzuki, Y -- Orii, T -- Shirayoshi, Y -- Mori, T -- Fujiki, Y -- New York, N.Y. -- Science. 1992 Feb 28;255(5048):1132-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, Gifu University School of Medicine, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1546315" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; Cricetinae ; DNA Mutational Analysis ; Genes ; Genetic Complementation Test ; Humans ; Membrane Proteins/*genetics ; Microbodies/*ultrastructure ; Molecular Sequence Data ; Oligodeoxyribonucleotides/chemistry ; Pedigree ; Polymerase Chain Reaction ; Transfection ; Zellweger Syndrome/*genetics
    Print ISSN: 0036-8075
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  • 8
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    Science innovation '92: the San Francisco sequel (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-08-14
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Selvin, P -- New York, N.Y. -- Science. 1992 Aug 14;257(5072):885-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1502555" target="_blank"〉PubMed〈/a〉
    Keywords: DNA/*genetics/isolation & purification ; DNA Fingerprinting ; Genetic Techniques ; *Human Genome Project ; Humans ; Oligodeoxyribonucleotides/isolation & purification ; Polymerase Chain Reaction
    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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  • 9
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    MacroH2A, a core histone containing a large nonhistone region (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-09-04
    Description: A histone, macroH2A, nearly three times the size of conventional H2A histone, was found in rat liver nucleosomes. Its N-terminal third is 64 percent identical to a full-length mouse H2A. However, it also contains a large nonhistone region. This region has a segment that resembles a leucine zipper, a structure known to be involved in dimerization of some transcription factors. Nucleosomes containing macroH2A may have novel functions, possibly involving interactions with other nuclear proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Pehrson, J R -- Fried, V A -- CA 06927/CA/NCI NIH HHS/ -- GM 24019/GM/NIGMS NIH HHS/ -- RR 05539/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 1992 Sep 4;257(5075):1398-400.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Fox Chase Cancer Center, Institute for Cancer Research, Philadelphia, PA 19111.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1529340" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; DNA/chemistry ; Histones/*chemistry/genetics ; Leucine Zippers ; Liver/*ultrastructure ; Macromolecular Substances ; Mice ; Molecular Sequence Data ; Nucleosomes/*chemistry ; Polymerase Chain Reaction ; Rats ; Sequence Homology, Nucleic Acid
    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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    GAP domains responsible for ras p21-dependent inhibition of muscarinic atrial K+ channel currents (1992)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1992-01-10
    Description: The interaction between the low molecular weight G protein ras p21 and a guanosine triphosphatase activating protein (GAP) uncouples a heterotrimeric G protein (Gk) from muscarinic receptors. Through the use of isolated atrial cell membranes and genetically engineered GAP deletion mutants, the src homology regions (SH2-SH3) at the amino terminus of GAP have been identified as the domains responsible for this effect. Deletion of the domain required to stimulate the guanosine triphosphatase activity of ras p21 relieves the requirement for ras p21 in this system. A model is presented that suggests that ras p21 induces a conformational change in GAP, which allows the SH2-SH3 regions of GAP to function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Martin, G A -- Yatani, A -- Clark, R -- Conroy, L -- Polakis, P -- Brown, A M -- McCormick, F -- CA51992-01/CA/NCI NIH HHS/ -- HL36930/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1992 Jan 10;255(5041):192-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Cetus Corporation, Emeryville, CA 94608.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1553544" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Baculoviridae ; Cell Membrane/metabolism ; Cells, Cultured ; Cloning, Molecular ; GTP-Binding Proteins/*physiology ; GTPase-Activating Proteins ; Genetic Engineering ; Genetic Vectors ; Guanosine 5'-O-(3-Thiotriphosphate)/pharmacology ; Guanosine Triphosphate/pharmacology ; Guinea Pigs ; Heart/*physiology ; Heart Atria ; Models, Biological ; Polymerase Chain Reaction ; Potassium Channels/drug effects/*physiology ; Proteins/genetics/*physiology ; Proto-Oncogene Proteins p21(ras)/*metabolism ; Receptors, Muscarinic/drug effects/*physiology ; ras GTPase-Activating Proteins
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
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