an arabinogalactan-protein ( agp ) purified from the filtrate of liquid-suspension-cultured italian-ryegrass ( lolium multiflorum ) endosperm cells by affinity chromatography on myeloma protein j539-sepharose was deglycosylated with trifluoromethanesulphonic acid to remove polysaccharide chains that are covalently associated with hydroxyproline residues in the peptide component of the proteoglycan .
C0036681
sepharose
C0032594
polysaccharide