title: Specific labelling of virus proteins by quantitative reaction of cysteine residues with  35 S-sulphite.
mesh_terms: D002474:Cell-Free System; D002499:Centrifugation, Density Gradient; D002855:Chromatography, Thin Layer; D003545:Cysteine; D004279:DNA, Viral / Q000378:metabolism; D004586:Electrophoresis; D004926:Escherichia coli; D007553:Isotope Labeling; D027383:Papillomaviridae / Q000378:metabolism*; D013439:Sulfhydryl Reagents; D013447:Sulfites; D013460:Sulfur Isotopes; D014764:Viral Proteins / Q000096:biosynthesis / Q000378:metabolism*
chemical_list: D004279:DNA, Viral; D013439:Sulfhydryl Reagents; D013447:Sulfites; D013460:Sulfur Isotopes; D014764:Viral Proteins; D003545:Cysteine