Peptides
Peptides are condensation products of two or more amino acids .
Two molecules of different amino acids can form two dipeptides . Three molecules of different amino acids can give six tripeptides .
Dipeptide has only one peptide bond , tripeptide has two peptide bonds and so on . Thus , a polypeptide made up of n-amino acids has ( n – 1 ) peptide bonds .
Polypeptides
Condensation Products of many amino acids ( „ In P xiucts of many amino acids ( ≈ 10000 ) is known as polypeptide and those polypeptides which have molecular mass above than 10000 are called proteins .
Proteins
They are linear polymers of a-amino acids . Structure of Proteins ( a ) Primary structure It simply reveals the sequence of amino acids .
( b ) Secondary structure α-helix structure maintained by hydrogen bonds or β-pleated sheet structure when R is small group .