4AC7:
reference: The crystal structure of Sporosarcina pasteurii urease in a complex with citrate provides new hints for inhibitor design., Benini S, Kosikowska P, Cianci M, Mazzei L, Vara AG, Berlicki L, Ciurli S, J Biol Inorg Chem. 2013 Mar;18(3):391-9. doi: 10.1007/s00775-013-0983-7. Epub, 2013 Feb 15. PMID: 23412551

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