in addition to the two positive peaks , a small trough was observed around 300 nm in the complexes with galactose-containing saccharides but not in the complex with n-acetylgalactosamine or galactosamine , suggesting the participation of tryptophan in the binding with galactose-containing saccharides .
C0001055
n-acetylgalactosamine
C0016943
galactosamine