... the HSacid-denatured form, with further formation of the LS(IHH) A-state; (b) for the slow phase, to formation of the LS native-like (IHM) A-state. Unlike wild-typecytochrome c, once the ... from the 695 nm band; therefore, the observed rate can be attributed to formation of the Fe(III)–M80 axial bond, providing strong indicationthat the slow phase is coupled to formation of the native ... stabilizes the LS (IHH) A-state even in the absence of sulfate. Therefore, the kinetic progresscurve of Fig. 9B is expected to refer: (a) for the fastphase, to the sulfate-induced destabilization of...