>3OXA_1|Chains A, B, C, D|Steroid Delta-isomerase|Pseudomonas putida (303) MNLPTAQEVQGLMARYIELVDVGDIEAIVQMYADDATVENPFGQPPIHGREQIAAFYRQGLGGGKVRASLTGPVRASHNGSGAMPFRVEMVWNGQPSALDVIDVMRFDEHGRIQTCQAYWSEVNLSVREPQ