Supplementary material for Farver et al. (1999) Proc. Natl. Acad. Sci. USA 96(3), 899-902.

Fig. 3.

Structural overlay of a-carbon backbones of native blue copper azurin (thin line) and the engineered purple Cu_A azurin (thick line), showing the location of electron donor (disulfide bond) and acceptor (copper sites). The rms deivation of 1.07 Å was obtained between the two protein backbones when the ligand loop (corresponding to Cys-112 to Met-121 in the native blue copper azurin) is not considered in the calculation.