Table 4.

ET Rate Constants of Met80-ligated Yeast Iso-1 Cyt c Variants

variant	kET (mM−1s−1)		kESE (mM−1s−1)
	0.1 M NaCl	1 M NaCl
WTa	48 ± 4b	n.a.	n.a.
WT*	37.1 ± 1.0	261.8 ± 21.5	1.28 ± 0.22
K79G	381.8 ± 19.9	742.8 ± 30.6	20.8 ± 9.04
K73Ha	39 ± 5b	n.a.	n.a.
K72A/K73H	47 ± 1c	n.a.	n.a.
K73H/K79Aa	133 ± 9d	n.a.	n.a.
N52G/K79Aa	160 ± 40d	n.a.	n.a.

^aThese variants contain tmK72 and a background C102S mutation. The rest of the variants contain K72A and C102S mutations.

^bFrom ref 75.

^cFrom ref 76.

^dFrom ref 25.