Table 1. Pseudoperoxidase and peroxidase activities of the different Cyt-c variants ^a .

	Activity	K m/mM–1	k cat/s–1	% of control
WT	Pseudoperoxidase	144.3 c	8 c	—
	Peroxidase	65 d	5.5 d	100
SO-Cyt ex situ	Pseudoperoxidase b	0.24 (0.08)	2.6 (0.8)	—
	Peroxidase	19 e	—	719
SO-Cyt in situ	Pseudoperoxidase b	0.44 f (0.07)	1.8 f (0.6)	—
	Peroxidase	—	—	644 i
M80A	Pseudoperoxidase	0.00325 g	—	—
	Peroxidase	23.2 h	72 h	780

^aStandard deviations are indicated in brackets.

^bDetermined for Cyt-c adsorbed on NH₂-SAMs, this work.

^cCyt-c adsorbed on COO-SAMs, from ref. 45.

^dCyt-c in solution with ABTS, from ref. 63.

^eSO-Cyt in solution with ABTS, from ref. 64.

^fSO-Cyt obtained in situ on NH₂-SAMs, this work.

^gFrom ref. 60.

^hIso-cyt M80A mutant, from ref. 65.

ⁱSO-Cyt obtained by pretreatment with H₂O₂ in the presence of PC/PE liposomes.