4UWD:
reference: Investigating the contribution of the active site environment to the slow reaction of hypoxia-inducible factor prolyl hydroxylase domain 2 with oxygen., Tarhonskaya H, Chowdhury R, Leung IK, Loik ND, McCullagh JS, Claridge TD, Schofield CJ, Flashman E, Biochem J. 2014 Aug 14. PMID: 25120187

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