Recent African origin of modern humans revealed by complete sequences of hominoid mitochondrial DNAs.
Journal: 1995/February - Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
PUBMED: 7530363
Abstract:
We analyzed the complete mitochondrial DNA (mtDNA) sequences of three humans (African, European, and Japanese), three African apes (common and pygmy chimpanzees, and gorilla), and one orangutan in an attempt to estimate most accurately the substitution rates and divergence times of hominoid mtDNAs. Nonsynonymous substitutions and substitutions in RNA genes have accumulated with an approximately clock-like regularity. From these substitutions and under the assumption that the orangutan and African apes diverged 13 million years ago, we obtained a divergence time for humans and chimpanzees of 4.9 million years. This divergence time permitted calibration of the synonymous substitution rate (3.89 x 10(-8)/site per year). To obtain the substitution rate in the displacement (D)-loop region, we compared the three human mtDNAs and measured the relative abundance of substitutions in the D-loop region and at synonymous sites. The estimated substitution rate in the D-loop region was 7.00 x 10(-8)/site per year. Using both synonymous and D-loop substitutions, we inferred the age of the last common ancestor of the human mtDNAs as 143,000 +/- 18,000 years. The shallow ancestry of human mtDNAs, together with the observation that the African sequence is the most diverged among humans, strongly supports the recent African origin of modern humans, Homo sapiens sapiens.
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Proc Natl Acad Sci U S A 92(2): 532-536

Recent African origin of modern humans revealed by complete sequences of hominoid mitochondrial DNAs.

Abstract

We analyzed the complete mitochondrial DNA (mtDNA) sequences of three humans (African, European, and Japanese), three African apes (common and pygmy chimpanzees, and gorilla), and one orangutan in an attempt to estimate most accurately the substitution rates and divergence times of hominoid mtDNAs. Nonsynonymous substitutions and substitutions in RNA genes have accumulated with an approximately clock-like regularity. From these substitutions and under the assumption that the orangutan and African apes diverged 13 million years ago, we obtained a divergence time for humans and chimpanzees of 4.9 million years. This divergence time permitted calibration of the synonymous substitution rate (3.89 x 10(-8)/site per year). To obtain the substitution rate in the displacement (D)-loop region, we compared the three human mtDNAs and measured the relative abundance of substitutions in the D-loop region and at synonymous sites. The estimated substitution rate in the D-loop region was 7.00 x 10(-8)/site per year. Using both synonymous and D-loop substitutions, we inferred the age of the last common ancestor of the human mtDNAs as 143,000 +/- 18,000 years. The shallow ancestry of human mtDNAs, together with the observation that the African sequence is the most diverged among humans, strongly supports the recent African origin of modern humans, Homo sapiens sapiens.

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  • Cann RL, Stoneking M, Wilson AC. Mitochondrial DNA and human evolution. Nature. 1987 Jan 1;325(6099):31–36. [PubMed] [Google Scholar]
  • Brown WM. Polymorphism in mitochondrial DNA of humans as revealed by restriction endonuclease analysis. Proc Natl Acad Sci U S A. 1980 Jun;77(6):3605–3609.[PMC free article] [PubMed] [Google Scholar]
  • Vigilant L, Pennington R, Harpending H, Kocher TD, Wilson AC. Mitochondrial DNA sequences in single hairs from a southern African population. Proc Natl Acad Sci U S A. 1989 Dec;86(23):9350–9354.[PMC free article] [PubMed] [Google Scholar]
  • Horai S, Hayasaka K. Intraspecific nucleotide sequence differences in the major noncoding region of human mitochondrial DNA. Am J Hum Genet. 1990 Apr;46(4):828–842.[PMC free article] [PubMed] [Google Scholar]
  • Vigilant L, Stoneking M, Harpending H, Hawkes K, Wilson AC. African populations and the evolution of human mitochondrial DNA. Science. 1991 Sep 27;253(5027):1503–1507. [PubMed] [Google Scholar]
  • Horai S, Kondo R, Nakagawa-Hattori Y, Hayashi S, Sonoda S, Tajima K. Peopling of the Americas, founded by four major lineages of mitochondrial DNA. Mol Biol Evol. 1993 Jan;10(1):23–47. [PubMed] [Google Scholar]
  • Ozawa T, Tanaka M, Sugiyama S, Ino H, Ohno K, Hattori K, Ohbayashi T, Ito T, Deguchi H, Kawamura K, et al. Patients with idiopathic cardiomyopathy belong to the same mitochondrial DNA gene family of Parkinson's disease and mitochondrial encephalomyopathy. Biochem Biophys Res Commun. 1991 May 31;177(1):518–525. [PubMed] [Google Scholar]
  • Anderson S, Bankier AT, Barrell BG, de Bruijn MH, Coulson AR, Drouin J, Eperon IC, Nierlich DP, Roe BA, Sanger F, et al. Sequence and organization of the human mitochondrial genome. Nature. 1981 Apr 9;290(5806):457–465. [PubMed] [Google Scholar]
  • Horai S, Satta Y, Hayasaka K, Kondo R, Inoue T, Ishida T, Hayashi S, Takahata N. Man's place in Hominoidea revealed by mitochondrial DNA genealogy. J Mol Evol. 1992 Jul;35(1):32–43. [PubMed] [Google Scholar]
  • Hixson JE, Brown WM. A comparison of the small ribosomal RNA genes from the mitochondrial DNA of the great apes and humans: sequence, structure, evolution, and phylogenetic implications. Mol Biol Evol. 1986 Jan;3(1):1–18. [PubMed] [Google Scholar]
  • Foran DR, Hixson JE, Brown WM. Comparisons of ape and human sequences that regulate mitochondrial DNA transcription and D-loop DNA synthesis. Nucleic Acids Res. 1988 Jul 11;16(13):5841–5861.[PMC free article] [PubMed] [Google Scholar]
  • Tamura K, Nei M. Estimation of the number of nucleotide substitutions in the control region of mitochondrial DNA in humans and chimpanzees. Mol Biol Evol. 1993 May;10(3):512–526. [PubMed] [Google Scholar]
  • Andrews P. Evolution and environment in the Hominoidea. Nature. 1992 Dec 17;360(6405):641–646. [PubMed] [Google Scholar]
  • Brown WM, Prager EM, Wang A, Wilson AC. Mitochondrial DNA sequences of primates: tempo and mode of evolution. J Mol Evol. 1982;18(4):225–239. [PubMed] [Google Scholar]
  • Swisher CC, 3rd, Curtis GH, Jacob T, Getty AG, Suprijo A, Widiasmoro Age of the earliest known hominids in Java, Indonesia. Science. 1994 Feb 25;263(5150):1118–1121. [PubMed] [Google Scholar]
  • Takahata N. Allelic genealogy and human evolution. Mol Biol Evol. 1993 Jan;10(1):2–22. [PubMed] [Google Scholar]
Department of Human Genetics, National Institute of Genetics, Mishima, Japan.
Department of Human Genetics, National Institute of Genetics, Mishima, Japan.
Abstract
We analyzed the complete mitochondrial DNA (mtDNA) sequences of three humans (African, European, and Japanese), three African apes (common and pygmy chimpanzees, and gorilla), and one orangutan in an attempt to estimate most accurately the substitution rates and divergence times of hominoid mtDNAs. Nonsynonymous substitutions and substitutions in RNA genes have accumulated with an approximately clock-like regularity. From these substitutions and under the assumption that the orangutan and African apes diverged 13 million years ago, we obtained a divergence time for humans and chimpanzees of 4.9 million years. This divergence time permitted calibration of the synonymous substitution rate (3.89 x 10(-8)/site per year). To obtain the substitution rate in the displacement (D)-loop region, we compared the three human mtDNAs and measured the relative abundance of substitutions in the D-loop region and at synonymous sites. The estimated substitution rate in the D-loop region was 7.00 x 10(-8)/site per year. Using both synonymous and D-loop substitutions, we inferred the age of the last common ancestor of the human mtDNAs as 143,000 +/- 18,000 years. The shallow ancestry of human mtDNAs, together with the observation that the African sequence is the most diverged among humans, strongly supports the recent African origin of modern humans, Homo sapiens sapiens.
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