EVAN OTO / SCIENCE PHOTO LIBRARY EVAN OTO / SCIENCE PHOTO LIBRARY
A molecular model of tryptophan, an essential amino acid which cannot be synthesized by the body and must be obtained through an organism's diet. Tryptophan is used as a building block for other complex proteins, as well as a precursor to compound such as serotonin, niacin and auxin. Atoms are coloured dark grey (carbon), light grey (hydrogen), red (oxygen) and blue (nitrogen).
Model release not required. Property release not required.