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Nitrite reductase (1aoq) from Paracoccus
denitrificans
What structural elements
are present?
What is the subunit composition
of the proteins?
What are the major features
of the active site?
What is the distance between
heme centers?
Which heme centers are bound
by substrate or product?
Williams, P. A., V. Fulop, E. F. Garman,
N. F. Saunders, S. J. Ferguson, and J. Hajdu. 1997. Haem-ligand switching during catalysis
in crystals of a nitrogen-cycle enzyme. Nature 389:406-412.
Nitrite reductase (1aoq)
Active Site Views
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Arg243, Arg391, His200, Ile201, Ser28,
Thr554, Tyr25, Tyr263, nitrite, and five water molecules
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Arg174, Arg243, Arg391, His200, Ile201,
Ser28, Thr554, Tyr25, Tyr263, nitric oxide, and five water molecules