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  • Articles  (38)
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  • American Association for the Advancement of Science (AAAS)  (38)
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  • Articles  (38)
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  • American Association for the Advancement of Science (AAAS)  (38)
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  • 1
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    Relationship between the c-myb locus and the 6q-chromosomal aberration in leukemias and lymphomas (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-02-27
    Description: Deletions of the long arm of chromosome 6 (6q-) are frequently found in hematopoietic neoplasms, including acute lymphoblastic leukemias, non-Hodgkin lymphomas and (less frequently) myeloid leukemias. The c-myb proto-oncogene has been mapped to region 6q21-24, which suggests that it could be involved in the 6q- aberrations. By means of in situ chromosomal hybridization on cells from six hematopoietic malignancies, it was demonstrated that the c-myb locus is not deleted, but is retained on band q22, which is consistently bordered by the chromosomal breakpoints in both interstitial and terminal 6q- deletions. The deletion breakpoints were located at some distance from the myb locus since no rearrangement of c-myb sequences was found. In one case, however, amplification of the entire c-myb locus was detectable. Furthermore, in all cases tested that carry 6q- deletions, myb messenger RNA levels were significantly higher than in normal cells or in malignant cells matched for lineage and stage of differentiation but lacking the 6q- marker. These results indicate that 6q- deletions are accompanied by structural and functional alterations of the c-myb locus and that these alterations may be involved in the pathogenesis of leukemias and lymphomas.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Barletta, C -- Pelicci, P G -- Kenyon, L C -- Smith, S D -- Dalla-Favera, R -- CA16239/CA/NCI NIH HHS/ -- New York, N.Y. -- Science. 1987 Feb 27;235(4792):1064-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3469751" target="_blank"〉PubMed〈/a〉
    Keywords: *Chromosome Deletion ; *Chromosomes, Human, Pair 6 ; DNA/genetics ; Gene Amplification ; Humans ; Leukemia/*genetics ; Leukemia, Lymphoid/genetics ; Leukemia, Myeloid/genetics ; Lymphoma, Non-Hodgkin/*genetics ; Nucleic Acid Hybridization ; RNA, Messenger/genetics
    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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    Transformation of rat fibroblasts by FSV rapidly increases glucose transporter gene transcription (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-03-20
    Description: Elevation of glucose transport is an alteration common to most virally induced tumors. Rat fibroblasts transformed with wild-type or a temperature-sensitive Fujinami sarcoma virus (FSV) were studied in order to determine the mechanisms underlying the increased transport. Five- to tenfold increases in total cellular glucose transporter protein in response to transformation were accompanied by similar increases in transporter messenger RNA levels. This, in turn, was preceded by an absolute increase in the rate of glucose transporter gene transcription within 30 minutes after shift of the temperature-sensitive FSV-transformed cells to the permissive temperature. The transporter messenger RNA levels in transformed fibroblasts were higher than those found in proliferating cells maintained at the nonpermissive temperature. The activation of transporter gene transcription by transformation represents one of the earliest known effects of oncogenesis on the expression of a gene encoding a protein of well-defined function.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Birnbaum, M J -- Haspel, H C -- Rosen, O M -- AM35430-01/AM/NIADDK NIH HHS/ -- DK 35158/DK/NIDDK NIH HHS/ -- New York, N.Y. -- Science. 1987 Mar 20;235(4795):1495-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3029870" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Avian Sarcoma Viruses ; Cell Division ; Cell Line ; *Cell Transformation, Viral ; Fibroblasts ; Gene Expression Regulation ; Kinetics ; Monosaccharide Transport Proteins/*genetics ; RNA, Messenger/genetics ; Rats ; 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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  • 3
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    Identification and localization of mutations at the Lesch-Nyhan locus by ribonuclease A cleavage (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-04-17
    Description: Many mutations leading to human disease are the result of single DNA base pair changes that cannot be identified by Southern analysis. This has prompted the development of alternative assays for point mutation detection. The recently described ribonuclease A cleavage procedure, with a polyuridylic acid-paper affinity chromatography step, has been used to identify the mutational lesions in the hypoxanthine phosphoribosyltransferase (HPRT) messenger RNAs of patients with Lesch-Nyhan syndrome. Distinctive ribonuclease A cleavage patterns were identified in messenger RNA from 5 of 14 Lesch-Nyhan patients who were chosen because no HPRT Southern or Northern blotting pattern changes had been found. This approach now allows HPRT mutation detection in 50 percent of the cases of Lesch-Nyhan syndrome. The polyuridylic acid-paper affinity procedure provides a general method for analysis of low abundance messenger RNAs.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Gibbs, R A -- Caskey, C T -- New York, N.Y. -- Science. 1987 Apr 17;236(4799):303-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3563511" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line ; Chromosome Deletion ; HeLa Cells/enzymology ; Humans ; Hypoxanthine Phosphoribosyltransferase/*genetics ; Lesch-Nyhan Syndrome/*genetics ; *Mutation ; Nucleic Acid Hybridization ; RNA, Messenger/genetics ; Ribonuclease, Pancreatic
    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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    Characterization and chromosomal localization of a cDNA encoding brain amyloid of Alzheimer's disease (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-02-20
    Description: Four clones were isolated from an adult human brain complementary DNA library with an oligonucleotide probe corresponding to the first 20 amino acids of the beta peptide of brain amyloid from Alzheimer's disease. The open reading frame of the sequenced clone coded for 97 amino acids, including the known amino acid sequence of this polypeptide. The 3.5-kilobase messenger RNA was detected in mammalian brains and human thymus. The gene is highly conserved in evolution and has been mapped to human chromosome 21.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Goldgaber, D -- Lerman, M I -- McBride, O W -- Saffiotti, U -- Gajdusek, D C -- New York, N.Y. -- Science. 1987 Feb 20;235(4791):877-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3810169" target="_blank"〉PubMed〈/a〉
    Keywords: Alzheimer Disease/*genetics ; Amino Acid Sequence ; Amyloid/*genetics ; *Chromosomes, Human, Pair 21 ; Cloning, Molecular ; DNA/genetics ; Humans ; Protein Conformation ; RNA, Messenger/genetics ; Solubility ; 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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  • 5
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    Functional analysis of a complementary DNA for the 50-kilodalton subunit of calmodulin kinase II (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-07-17
    Description: The calcium-calmodulin-dependent protein kinase II is a major component of brain synaptic junctions and has been proposed to play a variety of important roles in brain function. A complementary DNA representing a portion of the smaller 50-kilodalton subunit of the rat brain enzyme has been cloned and sequenced. The calmodulin-binding region has been identified and a synthetic analog prepared that binds calmodulin with high affinity in the presence of calcium. Like the 50-kilodalton kinase polypeptide, the concentration of the messenger RNA varies both neuroanatomically and during postnatal development of the brain. The broad tissue and species cross-reactivity of the complementary DNA suggests that the 50-kilodalton subunit found in rat brain is evolutionarily conserved and is the product of a single gene.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hanley, R M -- Means, A R -- Ono, T -- Kemp, B E -- Burgin, K E -- Waxham, N -- Kelly, P T -- New York, N.Y. -- Science. 1987 Jul 17;237(4812):293-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3037704" target="_blank"〉PubMed〈/a〉
    Keywords: Age Factors ; Amino Acid Sequence ; Animals ; Base Sequence ; Biological Assay ; Brain/enzymology/growth & development ; Calcium-Calmodulin-Dependent Protein Kinases ; Cloning, Molecular ; DNA/genetics ; Protein Kinases/*genetics ; RNA, Messenger/genetics ; Rats ; Species Specificity
    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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  • 6
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    Conservation of the Duchenne muscular dystrophy gene in mice and humans (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-10-16
    Description: A portion of the Duchenne muscular dystrophy (DMD) gene transcript from human fetal skeletal muscle and mouse adult heart was sequenced, representing approximately 25 percent of the total, 14-kb DMD transcript. The nucleic acid and predicted amino acid sequences from the two species are nearly 90 percent homologous. The amino acid sequence that is predicted from this portion of the DMD gene indicates that the protein product might serve a structural role in muscle, but the abundance and tissue distribution of the messenger RNA suggests that the DMD protein is not nebulin.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hoffman, E P -- Monaco, A P -- Feener, C C -- Kunkel, L M -- 2T 32 GM07753-07/GM/NIGMS NIH HHS/ -- HD18658/HD/NICHD NIH HHS/ -- R01 NS23740/NS/NINDS NIH HHS/ -- T32 GM007753/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1987 Oct 16;238(4825):347-50.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Genetics, Children's Hospital, Boston, MA 02115.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3659917" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Base Sequence ; DNA/*genetics ; DNA, Recombinant ; Exons ; Humans ; Male ; Mice ; Molecular Sequence Data ; Muscle Proteins/genetics ; Muscles/analysis/embryology ; Muscular Dystrophies/*genetics ; Muscular Dystrophy, Animal/*genetics ; Myocardium/analysis ; Nucleic Acid Hybridization ; RNA, Messenger/genetics ; X Chromosome
    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 an amplified, highly expressed gene in a human glioma (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-04-03
    Description: A gene, termed gli, was identified that is amplified more than 50-fold in a malignant glioma. The gene is expressed at high levels in the original tumor and its derived cell line and is located at chromosome 12 position (q13 to q14.3). The gli gene is a member of a select group of cellular genes that are genetically altered in primary human tumors.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kinzler, K W -- Bigner, S H -- Bigner, D D -- Trent, J M -- Law, M L -- O'Brien, S J -- Wong, A J -- Vogelstein, B -- CA-09243/CA/NCI NIH HHS/ -- CA-43722/CA/NCI NIH HHS/ -- NS-20023/NS/NINDS NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1987 Apr 3;236(4797):70-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3563490" target="_blank"〉PubMed〈/a〉
    Keywords: Cell Line ; *Chromosomes, Human, Pair 12 ; Cloning, Molecular ; DNA, Neoplasm/*genetics ; *Gene Amplification ; Gene Expression Regulation ; Glioma/*genetics ; Humans ; RNA, Messenger/genetics ; RNA, Neoplasm/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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  • 8
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    Smooth muscle-mediated connective tissue remodeling in pulmonary hypertension (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-07-24
    Description: Abnormal accumulation of connective tissue in blood vessels contributes to alterations in vascular physiology associated with disease states such as hypertension and atherosclerosis. Elastin synthesis was studied in blood vessels from newborn calves with severe pulmonary hypertension induced by alveolar hypoxia in order to investigate the cellular stimuli that elicit changes in pulmonary arterial connective tissue production. A two- to fourfold increase in elastin production was observed in pulmonary artery tissue and medial smooth muscle cells from hypertensive calves. This stimulation of elastin production was accompanied by a corresponding increase in elastin messenger RNA consistent with regulation at the transcriptional level. Conditioned serum harvested from cultures of pulmonary artery smooth muscle cells isolated from hypertensive animals contained one or more low molecular weight elastogenic factors that stimulated the production of elastin in both fibroblasts and smooth muscle cells and altered the chemotactic responsiveness of fibroblasts to elastin peptides. These results suggest that connective tissue changes in the pulmonary vasculature in response to pulmonary hypertension are orchestrated by the medial smooth muscle cell through the generation of specific differentiation factors that alter both the secretory phenotype and responsive properties of surrounding cells.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mecham, R P -- Whitehouse, L A -- Wrenn, D S -- Parks, W C -- Griffin, G L -- Senior, R M -- Crouch, E C -- Stenmark, K R -- Voelkel, N F -- CA31777/CA/NCI NIH HHS/ -- HD20521/HD/NICHD NIH HHS/ -- HL14985/HL/NHLBI NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1987 Jul 24;237(4813):423-6.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3603030" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Anoxia ; Cattle ; Connective Tissue/pathology/*physiopathology ; Disease Models, Animal ; Elastin/genetics/physiology ; Humans ; Hypertension, Pulmonary/pathology/*physiopathology ; Muscle, Smooth, Vascular/pathology/*physiopathology ; RNA, Messenger/genetics ; 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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  • 9
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    Allelic exclusion in transgenic mice that express the membrane form of immunoglobulin mu (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-05-15
    Description: Antibody-producing cells display a special form of regulation whereby each cell produces immunoglobulin from only one of its two sets of antibody genes. This phenomenon, called allelic exclusion, is thought to be mediated by the product of one heavy chain allele restricting the expression of the other. Heavy chains are synthesized in two molecular forms, secreted and membrane bound. In order to determine whether it is specifically the membrane-bound form of the immunoglobulin M (IgM) heavy chain (mu) that mediates this regulation, transgenic mice were created that carry a human mu chain gene altered so that it can only direct the synthesis of the membrane-bound protein. The membrane-bound form of the human mu chain was made by most of the B cells in these animals as measured by assays of messenger RNA and surface immunoglobulins. Further, the many B cells that express the human gene do not express endogenous mouse IgM, and the few B cells that express endogenous mouse mu do not express the transgene. Thus, the membrane-bound form of the mu chain is sufficient to mediate allelic exclusion. In addition, the molecular structures recognized for this purpose are conserved between human and mouse systems.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Nussenzweig, M C -- Shaw, A C -- Sinn, E -- Danner, D B -- Holmes, K L -- Morse, H C 3rd -- Leder, P -- New York, N.Y. -- Science. 1987 May 15;236(4803):816-9.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3107126" target="_blank"〉PubMed〈/a〉
    Keywords: *Alleles ; Animals ; Antibody-Producing Cells/*immunology ; Gene Expression Regulation ; *Genes ; Humans ; Immunoglobulin M/genetics ; Immunoglobulin mu-Chains/*genetics ; Mice ; Mice, Inbred Strains ; RNA, Messenger/genetics ; 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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  • 10
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    The mitochondrial genotype can influence nuclear gene expression in yeast (1987)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1987-01-30
    Description: Isochromosomal, respiratory-deficient yeast strains, such as a mit-, a hypersuppressive petite, and a petite lacking mitochondrial DNA, are phenotypically identical in spite of differences in their mitochondrial genomes. Subtractive hybridizations of complementary DNA's to polyadenylated RNA isolated from derepressed cultures of these strains reveal the presence of nuclear-encoded transcripts whose abundance varies not only between them and their respiratory-competent parent, but among the respiratory-deficient strains themselves. Transcripts of some nuclear-encoded mitochondrial proteins, like cytochrome c and the alpha and beta subunits of the mitochondrial adenosine triphosphatase, whose abundance is affected by glucose or heme, do not vary. In the absence of major metabolic variables, yeast cells seem to respond to the quality and quantity of mitochondrial DNA and modulate the levels of nuclear-encoded RNA's, perhaps as a means of intergenomic regulation.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Parikh, V S -- Morgan, M M -- Scott, R -- Clements, L S -- Butow, R A -- New York, N.Y. -- Science. 1987 Jan 30;235(4788):576-80.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/3027892" target="_blank"〉PubMed〈/a〉
    Keywords: Base Sequence ; Cell Nucleus/physiology ; Cytochrome c Group/genetics ; DNA, Fungal/genetics ; DNA, Mitochondrial/genetics ; Electron Transport Complex IV/genetics ; Gene Expression Regulation ; Genes, Fungal ; Genotype ; Mitochondria/*physiology ; Mutation ; RNA, Fungal/genetics ; RNA, Messenger/genetics ; RNA, Ribosomal/genetics ; Saccharomyces cerevisiae/*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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