title: Evolution of glycoproteins as judged by the frequency of occurrence of the tripeptides Asn-X-Ser and Asn-X-Thr in proteins.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001216:Asparagine / Q000032:analysis; D005075:Biological Evolution; D006023:Glycoproteins / Q000096:biosynthesis; D009842:Oligopeptides / Q000032:analysis; D010446:Peptide Fragments / Q000032:analysis; D012694:Serine / Q000032:analysis; D013912:Threonine / Q000032:analysis
chemical_list: D006023:Glycoproteins; D009842:Oligopeptides; D010446:Peptide Fragments; D013912:Threonine; D012694:Serine; D001216:Asparagine