amino acid residue
Thaum cov amino acids uas ua cov polypeptide sib xyaw ua ke nrog qee qhov sib txuam, qee qhov ntawm lawv pawg tau koom nrog kev tsim cov kab mob peptide thiab poob ib cov qauv ntawm cov dej. Yog li, cov amino acid chav nyob hauv polypeptide hu ua cov amino acid seem.