Article
Spectroscopic investigation of stellacyanin mutants: axial ligand interactions at the blue copper site.
Journal of the American Chemical Society - 17 Sept 2003
DeBeer George Serena, Basumallick Lipika, Szilagyi Robert K, Randall David W, Hill Michael G, Nersissian Aram M, Valentine Joan S, Hedman Britt, Hodgson Keith O, Solomon Edward I
Abstract excerpt
Detailed electronic and geometric structural descriptions of the blue copper sites in wild-type (WT) stellacyanin and its Q99M and Q99L axial mutants have been obtained using a combination of XAS, resonance Raman, MCD, EPR, and DFT calculations. The results show that the origin of the short Cu-S(Cys) bond in blue copper proteins is the weakened axial interaction, which leads to a shorter (based on EXAFS results)...
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