4O3B:
reference: L-Asp is a useful tool in the purification of the ionotropic glutamate receptor A2 ligand-binding domain., Krintel C, Frydenvang K, Ceravalls de Rabassa A, Kaern AM, Gajhede M, Pickering DS, Kastrup JS, FEBS J. 2014 May;281(10):2422-30. doi: 10.1111/febs.12795. Epub 2014 Apr 17. PMID: 24673938

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).