has role chitin chebi_ontology [1,4-(N-Acetyl-beta-D-glucosaminyl)]n Chitin CHEBI:23099 [4)-beta-D-GlcpNAc(1->]n beta-1,4-Poly-N-acetyl-D-glucosamine CHEBI:3596 CHEBI:13962 An aminoglycan consisting of β-(1→4)-linked <em>N</em>-acetyl-<small>D</small>-glucosamine residues. chitin CHEBI:17029 N-acylglucosamine aminoglycan vulnerary mouse metabolite Saccharomyces cerevisiae metabolite human metabolite