it contains fucose , galactose , mannose , sialic acid , n-acetylglucosamine , and the following amino acids : aspartic acid , threonine , serine , glutamic acid , proline , glycine , alanine , valine , methionine , isoleucine , leucine , tyrosine , phenylalanine , lysine , histidine , arginine , tryptophan , and cysteine .
C0002520
amino acids
C0061472
glutamic acid