QADGAKIYAQCAGCHQQNGQGIPGAFPPLAGHVAEILAKEGGREYLILVLLYGLQGQIEVKGMKYNGVMSSFAQLKDEEIAAVLNHIATAWGDAKKVKGFKPFTAEEVKKLRAKKLTPQQVLAERKKLGLK 131 This monoheme basic protein appears to function as an electron donor to cytochrome oxidase in T.thermophilus. :PTM: Binds 1 heme group per subunit. CY552_THETH Cytochrome c552 cycA Cytochrome c-552 (Fragment)