2AT2:
reference: Molecular structure of Bacillus subtilis aspartate transcarbamoylase at 3.0 A resolution., Stevens RC, Reinisch KM, Lipscomb WN, Proc Natl Acad Sci U S A 1991 Jul 15;88(14):6087-91. PMID: 1906175

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