Characterization of Carbohydrate-Peptide Linkage of Acidic Heteroglycopeptide with Immuno-Stimulating Activity from Mycelium of Phellinus linteus

Abstract

The carbohydrate-peptide linkage in acidic heteroglycopeptide from Phellinus linteus was characterized. Amino acid analysis showed large amounts of serine and threonine. β-Elimination results in the reduction of serine and threonine and a subsequent increase in alanine after reduction. These results indicated the presence of O-type linkage in the polymer.