
Keywords: X-ray crystallography; Structural biology; Copper; Enzyme; CuNIR; copper nitrite reductase; T1Cu; type 1 copper; T2Cu; type 2 copper; GtNIR; Geobacillus thermodenitrificans copper nitrite reductase; NeNIR; Nitrosomonas europaea copper nitrite reductase; A