Table 1.

Exchange parameters for azurin residues with well-defined conformational exchange parameters

Residuea	ln(kA)b	Slopec	ln(kB)b
Gly 90	2.26	−7490	7.61
Gly 45	2.23	−6778	7.06
Gly 37	2.00	−3121	7.60
Ser 89	1.88	−3391	7.51
Ile 87	1.61	−3442	7.09
His 46	1.28	−5996	7.11
Trp 48	0.74	−6447	–
Thr 113	0.72	−7959	6.19
Asn 47	0.58	−6456	6.62
Cys 112	0.58	−6690	–
His 117	0.57	−7765	–
Phe 111	0.36	−4173	–
Gly 9	0.29	−1127	–
Asp 71	0.01	−1127	–
Asn 42	−0.32	2501	–
Thr 124	−0.59	706	–
Gly 123	−0.67	1488	–
Gly 58	−0.82	3836	–

^a Residues with well-defined k_A values at all three temperatures are listed. Table rows are sorted with respect to decreasing values of ln(k_A) at T = 35.4°C.

^b The exchange rate constants k_A and k_B are forward and backward reaction parameters obtained by fitting to relaxation data as described in the text. Whenever the k_B values are poorly defined, that is, they are smaller than their errors for at least one temperature, no value is given.

^c Slope obtained for the values at 25.7 and 35.4°C (see text and Fig. 3 ▶).