Insights into redox partner interactions and substrate binding in nitrite reductase from Alcaligenes xylosoxidans: crystal structures of the Trp138His and His313Gln mutants.


Dissimilatory nitrite reductase catalyses the reduction of nitrite to nitric oxide within the key biological process of denitrification. We present biochemical and structural results on two key mutants, one postulated to be important for the interaction with the partner protein and the other for substrate entry. Trp138, adjacent to one of the type-1 Cu… (More)


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