Cu(II)


Coordination: His 46, Cys 112, His 117,
(and Met 121, Gly 45)





Azurin


Active site coordination geometry
Taken from the original crystal structures from Pseudomonas aeruginosa,

PDB Codes 5AZU and 1E5Z
Note: Continuation of the protein is represented by a purple atom

When the Cu(II) is reduced to Cu(I),
the Met 121 moves closer
and the Gly 45 moves away





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Cu(I)


Coordination: His 46, Cys 112, His 117, Met 121,
(and Gly 45)