3QWF:
reference: Insights into subtle conformational differences in the substrate-binding loop of fungal 17beta-hydroxysteroid dehydrogenase: a combined structural and kinetic approach., Cassetta A, Krastanova I, Kristan K, Brunskole Svegelj M, Lamba D, Lanisnik Rizner T, Stojan J, Biochem J. 2012 Jan 1;441(1):151-60. PMID: 21929506

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