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Megalomycin C, a macrolide antibiotic that blocks protein glycosylation and shows antiviral activity
Author(s) -
Alarcón Balbino,
González M.Eugenia,
Carrasco Luis
Publication year - 1988
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(88)80732-4
Subject(s) - glycosylation , glycoprotein , nucleic acid , mannose , antibiotics , chemistry , virology , biology , biochemistry , microbiology and biotechnology
Megalomycin C, a natural macrolide antibiotic showed a potent antiherpetic activity. At concentrations that efficiently prevented HSV‐1 multiplication, the compound had no cytotoxic or antiproliferative effects. Viral DNA and protein synthesis took place at normal levels in the presence of the antibiotic, suggesting that neither the translation of viral mRNA, nor the synthesis of viral nucleic acids was affected. The incorporation of mannose and galactosamine into viral proteins was blocked and precursor, but not mature, HSV‐1 glycoproteins were detected in the presence of megalomycin C. Noninfectious HSV‐1 viral particles were formed when the compound was present, but their glycoproteins were not properly glycosylated.