ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Obesity hormone peptide YY. Molecular model of part of the hormone peptide YY (or PYY3-36), a hormone that helps to regulate appetite. It is released by parts of the gastrointestinal tract after a meal, in levels proportional to the calorific content of the food. It has come under scrutiny as it has been found that injections of PYY3-36 can dramatically reduce appetite. This has made it a target for anti-obesity treatments. In this model, atoms are represented as balls, and are colour-coded: carbon, light blue; nitrogen, dark blue; oxygen, red; and hydrogen, yellow. The yellow strip shows the structure of the protein: the region at lower left is an alpha helix.
Model release not required. Property release not required.