@article {2347,
	title = {Redox chemistry of low-pH forms of tetrahemic cytochrome c3},
	journal = {J Inorg Biochem},
	volume = {100},
	number = {12},
	year = {2006},
	note = {<p>0162-0134 (Print)0162-0134 (Linking)Journal ArticleResearch Support, Non-U.S. Gov{\textquoteright}t</p>
},
	month = {Dec},
	pages = {2009-16},
	abstract = {<p>Desulfovibrio vulgaris Hildenborough cytochrome c(3) contains four hemes in a low-spin state with bis-histidinyl coordination. High-spin forms of cytochrome c(3) can be generated by protonation of the axial ligands in order to probe spin equilibrium (low-spin/high-spin). The spin alterations occurring at acid pH, the associated changes in redox potentials, as well as the reactivity towards external ligands were followed by the conjunction of square wave voltammetry and UV-visible, CD, NMR and EPR spectroscopies. These processes may be used for modelling the action of enzymes that use spin equilibrium to promote enzyme activity and reactivity towards small molecules.</p>
},
	keywords = {*Hydrogen-Ion Concentration, Circular Dichroism, Cytochrome c Group/*chemistry, Desulfovibrio vulgaris/*enzymology, Electron Spin Resonance Spectroscopy, Heme/*chemistry, Nuclear Magnetic Resonance, Biomolecular, Oxidation-Reduction, Spectrophotometry, Ultraviolet},
	url = {http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve\&db=PubMed\&dopt=Citation\&list_uids=17084898 },
	author = {Santos, M. and Dos Santos, M. M. and Goncalves, M. L. and Costa, C. and Romao, J. C. and Moura, J. J.}
}
