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Horizontal gene transfer (view source)
Revision as of 21:29, January 23, 2008
, 21:29, January 23, 2008→Main mechanisms of gene transfer in eukaryotes
==Main mechanisms of gene transfer in eukaryotes==
==Main mechanisms of gene transfer in eukaryotes==
===Documented examples of HGT in eukaryotes===
{| class="wikitable"
|-
! Protein
! Case
! Reference
|-
|Glucose phosphate isomerase
|gpi from E. coil was inherited from a relative of the
dicot Clarkia ungulata
|<ref>Smith MW, Feng DF, Doolittle RF. 1992. Evolution by acquisition: the case for horizontal gene transfers. Trends Biochem. Sci. 17:489—93</ref>
|-
|Fe superoxide dismutase
|The Fe SOD from the protist Entamoeba histolytica
has prokaryotic origins
|<ref>Smith MW, Feng DF, Doolittle RF. 1992. Evolution by acquisition: the case for horizontal gene transfers. Trends Biochem. Sci. 17:489—93</ref>
|-
|Aldolase Class 11
|Aldolase from yeast shows affinity to that
from E. coil
|<ref>Smith MW, Feng DF, Doolittle RF. 1992. Evolution by acquisition: the case for horizontal gene transfers. Trends Biochem. Sci. 17:489—93</ref>
|-
|Cytochrome c
|The protein from Arabidopsis thaliana is of fungal
affinity
|<ref>Kemmerer EC, Lei M, Wu R. 1991. Structure and molecular evolutionary analysis of a plant cytochrome c gene: surprising implications for Arabidopsis thaliana. J. Mol. Evol. 32:227—37</ref>
|-
|Xylanase
|Rumoncoccus-like gene is found in a rumen fungus
|<ref>Gilbert HJ, Hazlewood GP, Laurie JI, 0rpin CG. Xue GP. 1992. Homologous catalytic domains in a rumen fungal xylanase: evidence for gene duplication and prokaryotic origin. Mol. Microbiol. 6:2065—72</ref>
|-
|Thioredoxin
|Thioredoxin-m in plants has a bacterial origin
|<ref>Hartman H, Syvanen M, Buchanan BB. 1990. Contrasting evolutionary histories of chloroplast thioredoxins f and m. Mol. Biol. Evol. 7:247—54</ref>
|-
|Glyceraldehyde-3-phosphate
dehydrogenase
|gapdhA from E. coli and Anabaena have an affinity
with eukaryotic gapC
|<ref>Doolittle RF, Feng DF, Anderson KL, Alberro MR. 1990. A naturally occur ring horizontal gene transfer from a eukaryote to a prokaryote. J. Mol. Evol. 31:383—88</ref> <ref>Martin W, Brinkmann H, Savonna C, Cerff R. 1993. Evidence for a chimeric nature of nuclear genomes: eubacterial origin of eukaryotic glyceraldehyde-3-
phosphate dehydrogenase genes. Proc. Natl. Acad Sci. USA 90:8692—6</ref>
|-
|Elongation
|Factor Tu rufA in Arabidopsis is from its endosymbiont
|<ref>Baldauf SL, Manhart JR. Palmer JD. 1990. Evolutionary transfer of the chloroplast tufA gene to the nucleus. Nature 9. 344:262—65</ref>
|-
|Ribosomal proteins L21
and L22
|L2l and L22 in some plants is from its endosymbiont
|<ref>Gantt JS, Baldauf SL, Calie PJ, Weeden NF. Palmer JD. 1991. Transfer of rpl22 to the nucleus greatly preceded its loss from the chloroplast and involved the gain of an intron. EMBO J. 10:3073—78</ref>
|}
==The risks of horizontal gene transfer==
==The risks of horizontal gene transfer==