Table 1. Fitted parameters obtained from the Cu(i)- and Zn(ii)-bound forms of S. pneumoniae CopY ^a .

Sample	CN	Shell	r (Å)	σ 2 (×10–3 Å–2)	ΔEo (eV)	% R
Cu(i), NaBr	3	3 S	2.269(4)	5.0(3)	–6.8(7)	1.44
		1 Cu	2.703(5)	3.9(5)
Cu(i), NaCl	3	3 S	2.265(5)	5.1(3)	–5(1)	2.82
		1 Cu	2.71(1)	7(1)
Zn(ii), NaBr	4	3 S	2.29(1)	3.4(5)	–12(2)	0.77
		1 Br	2.48(1)	4(1)

^aSpectra and fits for the first Cu(i) sample entry and the Zn(ii) entry are shown in Fig. 3 and S2.