다수의 아미노산이 펩타이드 결합을 통해 사슬 모양으로 연결된 유기 고분자 화합물로, 단백질의 기본 구성 단위가 된다.
A linear organic polymer consisting of a large number of amino-acid residues bonded together in a chain, forming part of (or the whole of) a protein molecule.
예문:
"The synthesis of a polypeptide chain occurs within the ribosome during the process of translation."
"Insulin is a hormone composed of two polypeptide chains linked by disulfide bonds."
"Researchers analyzed the amino acid sequence of the polypeptide to determine its folding pattern."