Rapid evolution of the human gene for cytochrome c oxidase subunit IV.
We have compared the DNA sequences of nine mammalian genes for cytochrome c oxidase subunit IV (COX4 genes)--four expressed genes (human, bovine, rat, and mouse) and five pseudogenes (human, chimpanzee, orangutan, squirrel monkey, and bovine)--and constructed the sequence of the ancestral mammalian COX4 gene. By analyzing these sequences to determine the pattern and rate of nucleotide substitution in each branch of the evolutionary tree, we deduced that the human gene has evolved rapidly since the origin of the primate pseudogene approximately 41 million years ago, and we discuss the suggestion that this results from coevolution of nuclear and mitochondrial genes for cytochrome c oxidase.
Lomax
M I
MI
Department of Anatomy and Cell Biology, University of Michigan Medical School, Ann Arbor 48109.
Hewett-Emmett
D
D
Yang
T L
TL
Grossman
L I
LI
D000595:Amino Acid Sequence; D000818:Animals; D005075:Biological Evolution; D002417:Cattle; D003576:Electron Transport Complex IV / Q000235:genetics*; D006801:Humans; D046911:Macromolecular Substances; D051379:Mice; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction; D011148:Pongo pygmaeus; D011544:Pseudogenes; D051381:Rats; D012453:Saimiri; D012689:Sequence Homology, Nucleic Acid
D046911:Macromolecular Substances; D003576:Electron Transport Complex IV