FIG. 4.
Evidence for expression of holocytochrome c′. Samples were run on SDS-10% PAGE and stained for proteins containing covalently bound hemes. Lane 1, 1 μg of cytochrome c′ purified from R. capsulatus used as a control hemoprotein; lane 2, 25 μg of total soluble extract from wild-type N. meningitidis (cytochrome c′ is marked by an arrow); lane 3, 25 μg of total soluble extract from N. meningitidis cycP.