Table 2.

Average distribution of the three forms of the copper–thiolate center in N₂OR based on Gaussian analysis of the MCD spectra

State	Contribution of each center†						Total
	CuA		CuZ		CuZ*
	II/I	I/I	II/II	II/I	II/I	I/I
Native	0.521 ± 0.07‡	0	(0.343)§	0	0.162 ± 0.04‡	0	1.026
S-R	0	(0.521)	(0.343)	0	0	(0.162)	1.026
Reduced	0	(0.521)	0	0.343 ± 0.09‡	0	(0.162)	1.026

^†Shown as the CPM value. 

^‡This variation represents the spread of values obtained for the three enzyme preparations studied, and thus the distribution of the different forms depends somewhat on the enzyme preparation. 

^§Values in parentheses are for diamagnetic or spectroscopically silent oxidation states whose presence is deduced from data on paramagnetic oxidation states.