Structure of collagen
Individually there are three polypeptide strands. These are called alpha chains and each of them has a conformation of a left-handed helix. An alpha helix is a different structure with a right handed conformation.
Further the three left-handed helices are twisted together into a right-handed coiled coil, forming a triple helix or "super helix". The final cooperative quaternary structure stabilized by numerous hydrogen bonds.