Click to see the structure represented in ball and stick format. This shows a portion of the protein that makes up collagen displayed in the ball and stick format. Rotate it, and enlarge it. Look for the peptide bonds.

Click to see the structure represented in ribbon format. This display form emphasizes the structure of the protein backbone formed by the series of peptide bonds. Notice the coiled regions - the alpha helix.

Collagen contains multiple strands of protein twisted around each other. Click to see the structure with three strands.

PDB ID: 1BKV R.Z. Kramer, J. Bella, P. Mayville, B. Brodsky, H.M. Berman Sequence Dependant Conformational Variations of Collagen Triple-Helical Structure Nat. Struct. Biol. 6 pp. 454 (1999)