>1BUQ_1|Chains A, B|PROTEIN (3-KETOSTEROID ISOMERASE-19-NORTESTOSTERONE-HEMISUCCINATE)|Comamonas testosteroni (285) MNTPEHMTAVVQRYVAALNAGDLDGIVALFADDATVEDPVGSEPRSGTAAIREFFANSLKLPLAVELTQEVRAVANEAAFAFTVSFEFQGRKTVVAPIDHFRFNGAGKVVSMRALFGEKNIHAGA