has part has_part material entity 物质实体 organic amino compound amino acid chain 氨基酸链 An organic amino compound that is a polymer of amino acid chain components (unmodified amino-acid residues and/or modified amino-acid residues linked by peptide bonds or derivatives of such bonds. An organic amino compound that is a polymer of amino acid chain components (unmodified amino-acid residues and/or modified amino-acid residues) linked by peptide bonds or derivatives of such bonds. Category=external. PR:000018263 peptide polypeptide protein 多肽 是氨基酸链成分的聚合物的有机氨基化合物（未修饰的氨基酸残基和/或通过肽键或这些键的衍生物连接修饰的氨基酸残基）。 肽 amino acid chain component 氨基酸链组分