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    Coronavirus main proteinase (3CLpro) structure: basis for design of anti-SARS drugs (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-05-15
    Description: A novel coronavirus has been identified as the causative agent of severe acute respiratory syndrome (SARS). The viral main proteinase (Mpro, also called 3CLpro), which controls the activities of the coronavirus replication complex, is an attractive target for therapy. We determined crystal structures for human coronavirus (strain 229E) Mpro and for an inhibitor complex of porcine coronavirus [transmissible gastroenteritis virus (TGEV)] Mpro, and we constructed a homology model for SARS coronavirus (SARS-CoV) Mpro. The structures reveal a remarkable degree of conservation of the substrate-binding sites, which is further supported by recombinant SARS-CoV Mpro-mediated cleavage of a TGEV Mpro substrate. Molecular modeling suggests that available rhinovirus 3Cpro inhibitors may be modified to make them useful for treating SARS.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Anand, Kanchan -- Ziebuhr, John -- Wadhwani, Parvesh -- Mesters, Jeroen R -- Hilgenfeld, Rolf -- New York, N.Y. -- Science. 2003 Jun 13;300(5626):1763-7. Epub 2003 May 13.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute of Biochemistry, University of Lubeck, D-23538 Lubeck, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12746549" target="_blank"〉PubMed〈/a〉
    Keywords: Amino Acid Chloromethyl Ketones/chemistry/metabolism ; Amino Acid Sequence ; *Antiviral Agents ; Binding Sites ; Catalytic Domain ; Coronavirus 229E, Human/*enzymology ; Crystallization ; Crystallography, X-Ray ; Cysteine Endopeptidases/*chemistry/metabolism ; Cysteine Proteinase Inhibitors/chemistry/metabolism ; Dimerization ; *Drug Design ; Humans ; Isoxazoles/chemistry/metabolism/pharmacology ; Models, Molecular ; Molecular Sequence Data ; Protein Conformation ; Protein Structure, Secondary ; Protein Structure, Tertiary ; Pyrrolidinones/chemistry/metabolism/pharmacology ; Recombinant Proteins/chemistry/metabolism ; SARS Virus/*drug effects/*enzymology ; Sequence Alignment ; Sequence Homology, Amino Acid ; Severe Acute Respiratory Syndrome/drug therapy ; Transmissible gastroenteritis virus/enzymology
    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
    Electronic Resource
    Electronic Resource
    Experimental simulation of oxygen profiles and their influence on baker's yeast production: I. One-fermentor system (1988)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 31 (1988), S. 567-578 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: In production-scale bioreactors microorganisms are exposed to a continually changing environment. This may cause loss of viability, reduction of the yield of biomass or desired metabolites, and an increase in the formation of by-products. In fed-batch production of baker's yeast, profiles may occur in substrate and oxygen concentrations and in pH. This article deals with the influence of a periodically changing oxygen concentration on the growth of baker's yeast in a continuous culture. Also, influences on the production of ethanol, glycerol, acetic acid, and on the composition of the cells were investigated. It was found that relatively fast fluctuations between oxygen-unlimited and oxygen-limited conditions with a frequency of 1 or 2 min had a distinct influence on the biomass and metabolite production. However, RNA, protein, and carbohydrate contents measured in cells exposed to fluctuations differed little from those in cells from an oxygen-unlimited or an oxygen-limited culture. The respiration and fermentation capacities of cells exposed to fluctuations can be larger than the capacities of cells grown under oxygen-unlimited conditions.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260310609
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