| 3NZC: reference: Structural analysis of Pneumocystis carinii and human DHFR complexes with NADPH and a series of five potent 6-[5'-(omega-carboxyalkoxy)benzyl]pyrido[2,3-d]pyrimidine derivatives., Cody V, Pace J, Acta Crystallogr D Biol Crystallogr. 2011 Jan;67(Pt 1):1-7. Epub 2010 Dec, 16. PMID: 21206056 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).