PEPTIDES
· - Two or more amino acids combine together to form
a peptide.
· - A peptide is formed when two amino acids are
joined by a peptide bond.
· - Peptide bond is formed by removal of a water
molecule between the carboxyl group of one amino acid and amine group of
another amino acid.
· - Peptide bond is backbone of protein chain.
· - Hence each polypeptide has a free carboxyl
terminal (C-) and an amine terminal (N-).
· - Classification of amino acids based upon their
length:-
Ø Dipeptide:
- made up of 2 amino acids.
Ø Tripeptide:
- made up of 3 amino acids.
Ø Oligopeptide:
- made up of 2-10 amino acids.
Ø Polypeptide:
- made up of 10 or more amino acids.
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