Physico-chemical characterisation of membrane-bound and water-soluble forms of Bacillus subtilis cytochrome c-550
Cytochrome c-550 of the Gram-positive bacterium, Bacillus subtilis, is a membrane-bound 13-kDa protein encoded by the cccA gene. The cytochrome has been proposed to be comprised of an N-terminal membrane anchor domain (about 30 residues) which spans the cytoplasmic membrane in an alpha-helical conformation and a C-terminal heme domain (about 70 residues) which is located on the outside of the cyto