Haplogroup E (mtDNA)

In human mitochondrial genetics, haplogroup E is a human mitochondrial DNA (mtDNA) haplogroup typical for the Malay Archipelago. It is a subgroup of haplogroup M9.

Origin

Two contrasting proposals have been made for the location and time of the origin of Haplogroup E. One view is that the clade was formed over 30,000 years ago, around the time of the Last Glacial Maximum, on the northeast coast of Sundaland (near modern Borneo). In this model, the haplogroup was dispersed by rising sea levels during the Late Glacial period.^[2][4]

In 2014, the mitochondrial DNA of an 8,000-year-old skeleton found on Liang Island, one of the Matsu Islands off the southeast China coast, was found to belong to Haplogroup E, with two of the four mutations characteristic of the E1 subgroup. From this, Ko et al infer that Haplogroup E arose 8,000 to 11,000 years ago on the north Fujian coast, travelled to Taiwan with Neolithic settlers 6,000 years ago, and from there spread to Maritime Southeast Asia with the Austronesian language dispersal.^[1] Soares et al caution against over-emphasizing a single sample, and maintain that a constant molecular clock implies the earlier date (and more southerly origin) remains more likely.^[5]

Distribution

Haplogroup E is found throughout Maritime Southeast Asia.^[4] It is nearly absent from mainland East Asia, where its sister group M9a (also found in Japan) is common.^[4][6] In particular, it is found among speakers of Austronesian languages, and it is rare even in Southeast Asia among members of other language families. It has been detected in populations of Taiwan, the Philippines, Indonesia, Malaysia (including Sabah of Borneo, but not the Orang Asli of peninsular Malaysia), coastal Papua New Guinea, and especially in the Chamorros of the Mariana Islands.^{[4][7][8][9][10][11]} Of the four subclades, only E1a and E2b are found in Taiwan.^[2]

Subclades

This phylogenetic tree of haplogroup E subclades is based on the paper by Mannis van Oven and Manfred Kayser Updated comprehensive phylogenetic tree of global human mitochondrial DNA variation^[3] and subsequent published research. > Hello Ross,

• E
  • E1
    • E1a
      • E1a1
        • E1a1a
          • E1a1a1
      • E1a2
    • E1b
      • E1b1
  • E2
    • E2a
    • E2b
      • E2b1
      • E2b2

See also

Wikimedia Commons has media related to Haplogroup E (mtDNA).

• Genealogical DNA test
• Genetic Genealogy
• Human mitochondrial genetics
• Population Genetics
• Human mitochondrial DNA haplogroups

References

External links

• General
  • Ian Logan's Mitochondrial DNA Site
  • Mannis van Oven's Phylotree
• Haplogroup E
  • Ballinger, S.W.; Schurr, T.G.; Torroni, A.; Gan, Y.Y.; Hodge, J.A.; Hassan, K.; Chen, K.H.; Wallace, D.C. (1992). "Southeast Asian Mitochondrial DNA Analysis Reveals Genetic Continuity of Ancient Mongoloid Migrations". Genetics. 130 (1): 139–152. PMC 1204787. PMID 1346259.
  • Herrnstadt, C.; Elson, J.L.; Fahy, E.; Preston, G.; Turnbull, D.M.; Anderson, C.; Ghosh, S.S.; Olefsky, J.M.; et al. (2002). "Reduced-Median-Network Analysis of Complete Mitochondrial DNA Coding-Region Sequences for the Major African, Asian, and European Haplogroups". American Journal of Human Genetics. 70 (5): 1152–1171. doi:10.1086/339933. PMC 447592. PMID 11938495.CS1 maint: Explicit use of et al. (link)
  • Ingman, M.; Kaessmann, H.; Pääbo, S.; Gyllensten, U. (2000). "Mitochondrial genome variation and the origin of modern humans". Nature. 408 (6813): 708–713. doi:10.1038/35047064. PMID 11130070.
  • Stoneking, M.; Jorde, L.B.; Bhatia, K.; Wilson, A.C. (1990). "Geographic Variation in Human Mitochondrial DNA from Papua New Guinea". Genetics. 124 (3): 717–733. PMC 1203963. PMID 1968873.
  • Trejaut, Jean A; Kivisild, Toomas; Jun Hun, Loo; Chien Liang, Lee; Chun Lin, He; Chia Jung, Hsu; Zheng Yuan, Li; Lin, Marie (2005). "Traces of Archaic Mitochondrial Lineages Persist in Austronesian-Speaking Formosan Populations". PLoS Biology. 3 (8): 8. doi:10.1371/journal.pbio.0030247. PMC 1166350. PMID 15984912.