1WA1:
reference: Insights into redox partner interactions and substrate binding in nitrite reductase from Alcaligenes xylosoxidans: crystal structures of the Trp138His and His313Gln mutants., Barrett ML, Harris RL, Antonyuk S, Hough MA, Ellis MJ, Sawers G, Eady RR, Hasnain SS, Biochemistry. 2004 Dec 28;43(51):16311-9. PMID: 15610025

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