LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Synthetic peptide fibre. Molecular model of a synthetic collagen-like peptide fibre, showing three different ways of representing the structure. Peptides are small molecules formed from amino acids. Peptides can be linked together to form proteins. Collagen is a long, fibrous, structural protein that usually takes the form of a triple helix, as seen here. Synthetic peptide collagen chains have a range of medical uses, such as in skin grafts and cosmetic surgery. The secondary structure (red, yellow, pink helices) is overlaid on tubular and space-filled molecular models.
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