5YHH:
reference: Crystal structure of the hydroxylaminopurine resistance protein, YiiM, and its putative molybdenum cofactor-binding catalytic site., Namgung B, Kim JH, Song WS, Yoon SI, Sci Rep. 2018 Feb 19;8(1):3304. doi: 10.1038/s41598-018-21660-y. PMID: 29459651

This OCA Structure page
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