GENETICS AND BIOSYNTHESIS OF CYTOCHROME.

The article presents information on genetics and biosynthesis of cytochrome. The c-type cytochromes are defined as cytochromes containing covalent linkages between the heme side-chains and the protein. One particular group of these proteins, referred to as "eukaryotic cytocbrome c", as mammalian cytochrome c", or just as "cytochrome c", is characterized by its presence in the mitochondria of all eukaryotic organisms, by a specific redox potential, and by catalytic activity with cytoebrorne oxidase from mammalian sources. The amino acid sequences of the cytochromes c from more than 30 species are sufficiently alike and their differences are of such nature that their evolution from a common ancestral form appears firmly established.