What is a polypeptide and how is it produced?

Question

What is a polypeptide and how is it produced?

Answer 1

Polypeptides are chains of amino acids. Proteins are made up of one or more polypeptide molecules.

The amino acids are linked covalently by peptide bonds.

One end of every polypeptide, called the amino terminal or N-terminal, has a free amino group. The other end, with its free carboxyl group, is called the carboxyl terminal or C-terminal.

The sequence of amino acids in a polypeptide is dictated by the codons in the messenger RNA (mRNA) molecules from which the polypeptide was translated. The sequence of codons in the mRNA was, in turn, dictated by the sequence of codons in the DNA from which the mRNA was transcribed