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  • Articles  (7)
  • Cattle  (7)
  • 1985-1989
  • 1980-1984  (7)
  • 1970-1974
  • 1984  (7)
  • Computer Science  (7)
  • Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
  • 1
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    Selenium deficiency in cattle associated with Heinz bodies and anemia (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-02-03
    Description: Cattle grazing St. Augustine grass growing on peaty muck soils in the Florida Everglades developed anemia associated with the presence of Heinz bodies and suboptimal concentrations of selenium in blood. Selenium supplementation corrected the anemia, prevented Heinz body formation, increased the body weight of cows and calves, and elevated blood selenium. This may be the first recorded example of widespread anemia in a population due to selenium deficiency.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Morris, J G -- Cripe, W S -- Chapman, H L Jr -- Walker, D F -- Armstrong, J B -- Alexander, J D Jr -- Miranda, R -- Sanchez, A Jr -- Sanchez, B -- Blair-West, J R -- New York, N.Y. -- Science. 1984 Feb 3;223(4635):491-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6691160" target="_blank"〉PubMed〈/a〉
    Keywords: Anemia, Hemolytic/drug therapy/etiology/*veterinary ; Animal Feed ; Animals ; Body Weight ; Cattle ; Cattle Diseases/drug therapy/*etiology ; Heinz Bodies/*ultrastructure ; Hematocrit ; Hemoglobins/analysis ; Selenium/administration & dosage/blood/*deficiency
    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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    Homologies between signal transducing G proteins and ras gene products (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-11-16
    Description: The guanosine triphosphate-binding proteins (G proteins) found in a variety of tissues transduce signals generated by ligand binding to cell surface receptors into changes in intracellular metabolism. Amino acid sequences of peptides prepared by partial proteolysis of the alpha subunit of a bovine brain G protein and the alpha subunit of rod outer-segment transducin were determined. The two proteins show regions of sequence identity as well as regions of diversity. A portion of the amino-terminal peptide sequence of each protein is highly homologous with the corresponding region in the ras protein (a protooncogene product). These similarities suggest that G proteins and ras proteins may have analogous functions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hurley, J B -- Simon, M I -- Teplow, D B -- Robishaw, J D -- Gilman, A G -- GM 09731-02/GM/NIGMS NIH HHS/ -- NS 18153/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 1984 Nov 16;226(4676):860-2.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6436980" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Cattle ; GTP-Binding Proteins/*metabolism ; Neoplasm Proteins/*metabolism ; Oncogenes ; Protein Conformation ; Proto-Oncogene Proteins p21(ras) ; Transduction, Genetic
    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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    Cytochrome a3 structure in carbon monoxide-bound cytochrome oxidase (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-07-20
    Description: The iron-carbon monoxide stretching mode and the iron-carbon-oxygen bending mode in carbon monoxide-bound cytochrome oxidase have been assigned at 520 and 578 cm-1, respectively. The frequencies, widths, and intensities of these modes show that the Fe-C-O grouping in carbon monoxide-cytochrome a3 is linear but tilted from the normal to the heme plane; that the iron-histidine bond in both five- and six-coordinate cytochrome a3 is strained; and that the carbon monoxide and the proximal histidine each have characteristic, well-defined orientations in all molecules. These data can account for the binding affinities of carbon monoxide and dioxygen under physiological conditions.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Argade, P V -- Ching, Y C -- Rousseau, D L -- New York, N.Y. -- Science. 1984 Jul 20;225(4659):329-31.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6330890" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Carbon Monoxide/metabolism ; Cattle ; Chemical Phenomena ; Chemistry ; Electron Transport Complex IV/*metabolism ; Myoglobin/metabolism ; Oxidation-Reduction ; Oxygen/metabolism ; Spectrum Analysis, Raman
    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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    Increased phosphorylation of myosin light chain kinase after an increase in cyclic AMP in intact smooth muscle (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-03-30
    Description: The role of cyclic adenosine monophosphate-mediated phosphorylation of myosin light chain kinase in relaxing smooth muscle was examined. The kinase was immunoprecipitated from tissue extracts and the phosphate content was determined. The addition of forskolin to resting or methacholine-contracted muscles resulted in an increase in myosin light chain kinase phosphorylation of myosin light chain kinase is one of the reactions in the process by which cyclic adenosine monophosphate causes relaxation of smooth muscle.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉de Lanerolle, P -- Nishikawa, M -- Yost, D A -- Adelstein, R S -- New York, N.Y. -- Science. 1984 Mar 30;223(4643):1415-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6322302" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cattle ; Colforsin ; Cyclic AMP/*physiology ; Diterpenes/pharmacology ; Muscle Relaxation ; Muscle, Smooth/drug effects/*metabolism/physiology ; Myosin-Light-Chain Kinase ; Phosphorylation ; Protein Kinases/*metabolism
    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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    Cyclophilin: a specific cytosolic binding protein for cyclosporin A (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-11-02
    Description: Cyclophilin, a specific cytosolic binding protein responsible for the concentration of the immunosuppressant cyclosporin A by lymphoid cells, was purified to homogeneity from bovine thymocytes. Cation-exchange high-performance liquid chromatography resolved a major and minor cyclophilin species that bind cyclosporin A with a dissociation constant of about 2 X 10(-7) moles per liter and specific activities of 77 and 67 micrograms per milligram of protein, respectively. Both cyclophilin species have an apparent molecular weight of 15,000, an isoelectric point of 9.6, and nearly identical amino acid compositions. A portion of the NH2-terminal amino acid sequence of the major species was determined. The cyclosporin A-binding activity of cyclophilin is sulfhydryl dependent, unstable at 56 degrees C and at pH 4 or 9.5, and sensitive to trypsin but not to chymotrypsin digestion. Cyclophilin specifically binds a series of cyclosporin analogs in proportion to their activity in a mixed lymphocyte reaction. Isolation of cyclophilin from the cytosol of thymocytes suggests that the immunosuppressive activity of cyclosporin A is mediated by an intracellular mechanism, not by a membrane-associated mechanism.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Handschumacher, R E -- Harding, M W -- Rice, J -- Drugge, R J -- Speicher, D W -- New York, N.Y. -- Science. 1984 Nov 2;226(4674):544-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6238408" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Sequence ; Animals ; Carrier Proteins/*isolation & purification/metabolism ; Cattle ; Chromatography, High Pressure Liquid ; Cyclosporins/*metabolism ; Electrophoresis, Polyacrylamide Gel ; Humans ; Isoelectric Point ; Kinetics ; Lymphocyte Culture Test, Mixed ; Mice ; Molecular Weight ; Peptidylprolyl Isomerase
    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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    Processing of proenkephalin is tissue-specific (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-08-17
    Description: Most neuropeptides are synthesized as large precursor proteins. These precursors undergo a maturation process involving several proteolytic events that generate the biologically active peptides. The enzymatic mechanisms underlying this processing are still largely unknown. The processing of the precursor protein proenkephalin was studied in two different bovine tissues, the hypothalamus and adrenal medulla. The high molecular weight enkephalin-containing peptides that accumulate in these two tissues were found to be different, indicating the existence of two processing pathways for this neuropeptide precursor.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liston, D -- Patey, G -- Rossier, J -- Verbanck, P -- Vanderhaeghen, J J -- New York, N.Y. -- Science. 1984 Aug 17;225(4663):734-7.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6547780" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenal Medulla/metabolism ; Animals ; Cattle ; Enkephalin, Methionine/analogs & derivatives/metabolism ; Enkephalins/*metabolism ; Hypothalamus/metabolism ; Organ Specificity ; Pituitary Gland, Posterior/metabolism ; Protein Precursors/*metabolism ; Supraoptic Nucleus/metabolism
    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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    Isolated chromaffin cells from adrenal medulla contain primarily monoamine oxidase B (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-05-11
    Description: Cultured chromaffin cells from bovine adrenal medulla were found to contain primarily the B form of monoamine oxidase. This monoamine oxidase B enzyme was somewhat distinct from B enzymes from other sources, in that noradrenaline was a much poorer substrate than serotonin. Nonetheless, studies with selective inhibitors of the A form (clorgyline) and the B form [(-)-deprenyl] confirmed that chromaffin cell monoamine oxidase was the B form. The observation that chromaffin cell monoamine oxidase has poor affinity for catecholamines is consistent with physiological needs that require the cell to synthesize and store large amounts of catecholamines.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Youdim, M B -- Banerjee, D K -- Pollard, H B -- New York, N.Y. -- Science. 1984 May 11;224(4649):619-21.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6424235" target="_blank"〉PubMed〈/a〉
    Keywords: Adrenal Medulla/*cytology/enzymology ; Animals ; Blood Platelets/metabolism ; Catecholamines/metabolism ; Cattle ; Chromaffin System/*enzymology ; Clorgyline/pharmacology ; Humans ; Monoamine Oxidase/*metabolism ; Norepinephrine/metabolism ; Selegiline/pharmacology ; Serotonin/metabolism
    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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