has part has_part has part has role protein gelatin A mixture of peptides and proteins produced by partial hydrolysis of collagen extracted from the skin, bones, and connective tissues of animals such as domesticated cattle, chicken, pigs, and fish. CAS:9000-70-8 CHEBI:5291 Gelatine KEGG:C01498 KEGG:D00115 MetaCyc:CPD-13419 PMID:25496177 PMID:25825978 PMID:25861981 Reaxys:8193777 Reaxys:8473514 Wikipedia:Gelatin chebi_ontology mixture