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From poly- + peptide.

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polypeptide (plural polypeptides)

1. (organic chemistry) Any polymer of (same or different) amino acids joined via peptide bonds.
2. (biochemistry) Any such polymer that is not folded into a secondary structure of a protein.
3. (biochemistry) A small protein containing up to 100 amino acids; see also oligopeptide.

• actinomycin
• angiotensin
• peptide
• proinsulin
• secretin

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polypeptide m (plural polypeptides)

1. polypeptide

• “polypeptide”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012