cliparts/8/1/7/e/clipart-glutamine-amino-acid-817e.svg image/svg+xml Open Clip Art Library Glutamine (amino acid) 2010-05-20T04:49:20 A ball-and-stick model structure of polar amino acid glutamine (Gln, Q). Carbon in blue-grey, oxygen in red, nitrogen in green, hydrogen in silver. Drawn in Inkscape. http://openclipart.org/detail/61381/glutamine-(amino-acid)-by-j_alves J_Alves acid amino amino acid biology chemistry clip art clipart glutamine model polar science structure