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  • 1
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    Didemnins: antiviral and antitumor depsipeptides from a caribbean tunicate (1981)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1981-05-22
    Description: Extracts of samples of a Caribbean tunicate (ascidian, sea squirt) of the family Didemnidae inhibit in vitro at low concentrations the growth of DNA and RNA viruses as well as L1210 leukemic cells. The active compounds isolated from the tunicate, didemnins A, B, and C, are depsipeptides, and didemnin B (a derivative of didemnin A) is the component active at the lowest concentration in inhibiting viral replication in vitro and P388 leukemia in vivo.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Rinehart, K L Jr -- Gloer, J B -- Hughes, R G Jr -- Renis, H E -- McGovren, J P -- Swynenberg, E B -- Stringfellow, D A -- Kuentzel, S L -- Li, L H -- AI 04769/AI/NIAID NIH HHS/ -- GM 27029/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1981 May 22;212(4497):933-5.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/7233187" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antibiotics, Antineoplastic/*isolation & purification ; Antiviral Agents/*isolation & purification ; *Depsipeptides ; Leukemia, Experimental/*drug therapy ; Peptides, Cyclic/*isolation & purification/therapeutic use ; Structure-Activity Relationship ; Urochordata/*analysis
    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
    Bilayer stabilizing peptides and the inhibition of viral infection: antimeasles activity of carbobenzoxy-Ser-Leu-amide (1987)
    Springer
    Bioscience reports 7 (1987), S. 745-749 
    Details
    ISSN: 1573-4935
    Keywords: virus inhibitors ; measles virus ; peptide synthesis ; membrane fusion ; membrane stabilization ; hexagonal phase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A number of carbobenzoxy-dipeptide-amides raise the bilayer to hexagonal phase transition temperature of dielaidoylphosphatidylethanolamine (stabilizes the bilayer). The potency of the peptides in stabilizing the bilayer phase is Z-Tyr-Leu-NH2= Z-Gly-Phe-NH2〉Z-Ser-Leu-NH2〉Z-Gly-Leu-NH2〉Z-Gly-Gly-NH2. A linear correlation was found between the respective HPLC retention time parameterk′ for the peptide and the slope of the bilayer stabilization curve determined with model membranes by differential scanning calorimetry. One dipeptide, Z-Ser-Leu-NH2, reduces measles virus cytopathic effect (CPE) in Vero cells. The mechanism by which this peptide reduces the CPE is not known, although some peptides which raise the bilayer to hexagonal phase transition temperature of phospholipids inhibit membrane fusion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01116868
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