title: Phosphoglycopeptide, a major constituent of the spermatophoric plasma of the octopus (Octopus dofleini martini).
abstract: A phosphoglycopeptide, accounting for approximately 90% of the characteristically high content of acid-soluble organically-bound phosphorus in the octopus spermatophoric plasma (4 mg P/ml), was identified. Electrophoretic and chromatographic purification, followed by chemical and enzymic hydrolysis, yielded D-galactose phosphate as a degradation product. The galactose and peptide moieties of the compound were linked via a phosphoryl rather than a glycosidic linkage but the peptide was devoid of aromatic amino acids.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D000818:Animals; D002854:Chromatography, Paper; D004590:Electrophoresis, Paper; D005690:Galactose / Q000032:analysis; D006020:Glycopeptides / Q000032:analysis* / Q000302:isolation & purification; D008297:Male; D049831:Octopodiformes / Q000032:analysis*; D010710:Phosphates / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D013093:Spermatogonia / Q000032:analysis*; D013094:Spermatozoa / Q000032:analysis*
chemical_list: D000596:Amino Acids; D006020:Glycopeptides; D010710:Phosphates; D010758:Phosphorus; D005690:Galactose