title: Structural analysis of the capsid polypeptides of herpes simplex virus types 1 and 2.
abstract: Capsids of herpes simplex virus (HSV) types 1 and 2 contain seven polypeptides ranging in molecular weight from 154,000 to 12,000 (termed NC-1 through NC-7 in order of descending molecular weight). Antibodies prepared to HSV-1 capsid polypeptides isolated from sodium dodecyl sulfate-polyacrylamide gels reacted in an immunofluorescence assay against HSV-1-infected KB cells. Three of the antibodies (anti-NC-1, anti-NC-2, and anti-NC-3,4) also reacted with HSV-2-infected cells. Tryptic peptide analysis showed that each of the HSV-1 capsid polypeptides had a unique methionine peptide profile, and none appeared to be derived from the major capsid polypeptide. Comparative peptide analysis of HSV-1 and HSV-2 showed that one polypeptide (NC-7, 12,000 molecular weight) had an identical methionine peptide profile and a very similar arginine peptide profile in both virus types. The arginine peptide profile of NC-7 of HSV-1 was very different from the arginine profile of KB histone H4. Although there were certain intertypic similarities in the methionine peptide profiles of the other capsid components especially in NC-1 (the major capsid protein), there was no case where the tryptic peptides were identical in the two virus types.
mesh_terms: D002213:Capsid / Q000032:analysis* / Q000276:immunology; D000939:Epitopes; D006657:Histones / Q000032:analysis; D008715:Methionine / Q000032:analysis; D008970:Molecular Weight; D010455:Peptides / Q000032:analysis; D018139:Simplexvirus / Q000032:analysis* / Q000145:classification; D014357:Trypsin / Q000494:pharmacology; D014764:Viral Proteins / Q000032:analysis*
chemical_list: D000939:Epitopes; D006657:Histones; D010455:Peptides; D014764:Viral Proteins; D008715:Methionine; D014357:Trypsin