2VQB:
reference: Revealing the moonlighting role of NADP in the structure of a flavin-containing monooxygenase., Alfieri A, Malito E, Orru R, Fraaije MW, Mattevi A, Proc Natl Acad Sci U S A. 2008 May 6;105(18):6572-7. Epub 2008 Apr 28. PMID: 18443301

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