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. 1988 Apr;85(8):2573-7.
doi: 10.1073/pnas.85.8.2573.

Virion basic phosphoprotein from human cytomegalovirus contains O-linked N-acetylglucosamine

D M Benko  1 , R S Haltiwanger, G W Hart, W Gibson
Affiliations

Virion basic phosphoprotein from human cytomegalovirus contains O-linked N-acetylglucosamine

D M Benko et al. Proc Natl Acad Sci U S A. 1988 Apr.

Abstract

A 149-kDa virion protein of human strains of cytomegalovirus is the principal acceptor for galactose added in vitro by bovine milk galactosyltransferase. Peptide comparisons with other biochemical characteristics of the galactosylated protein identified it as the virus-encoded basic phosphoprotein. This protein is an abundant constituent of the virion and is located in the tegument region, between the capsid and the envelope, rather than in the envelope layer with the recognized virion glycoproteins. The galactosylated carbohydrate was resistant to a commercial preparation of endoglycosidase F but was sensitive to removal by alkali-induced beta-elimination, indicating an O-linkage to the protein. Chromatographic and electrophoretic determinations identified the beta-eliminated material as the alditol of Gal beta 1-4GlcNAc, establishing that the human cytomegalovirus virion basic phosphoprotein contains single O-linked residues of N-acetylglucosamine.

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