Topic D Enzymes in action 3.2/3.3

Some regions of a polypeptide form regular structures known as alpha-helices and beta-pleated sheets.

The amino acids in a polypeptide are linked together in a chain by peptide bonds.

Some proteins consist of more than one polypeptide chain linked together.

Enzymes often consist of a single polypeptide folded into a globular shape

Enzymes lower the activation energy of a reaction