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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
biochemistry, genetics and molecular biology
Evidence that plant-like genes in Chlamydia species reflect an ancestral relationship between chlamydiaceae, cyanobacteria, and the chloroplast
Genome Research, Volume 12, No. 8, Year 2002
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Description
An unusually high proportion of proteins encoded in Chlamydia genomes are most similar to plant proteins, leading to proposals that a Chlamydia ancestor obtained genes from a plant or plant-like host organism by horizontal gene transfer. However, during an analysis of bacterial-eukaryotic protein similarities, we found that the vast majority of plant-like sequences in Chlamydia are most similar to plant proteins that are targeted to the chloroplast, an organelle derived from a cyanobacterium. We present further evidence suggesting that plant-like genes in Chlamydia, and other Chlamydiaceae, are likely a reflection of an unappreciated evolutionary relationship between the Chlamydiaceae and the cyanobacteria-chloroplast lineage. Further analyses of bacterial and eukaryotic genomes indicates the importance of evaluating organellar ancestry of eukaryotic proteins when identifying bacteria-eukaryote homologs or horizontal gene transfer and supports the proposal that Chlamydiaceae, which are obligate intracellular bacterial pathogens of animals, are not likely exchanging DNA with their hosts. ©2002 by Cold Spring Harbor Laboratory Press.
Authors & Co-Authors
Brinkman, Fiona SL L.
Canada, Burnaby
Simon Fraser University
Canada, Vancouver
The University of British Columbia
Blanchard, Jeffrey L.
United States, Madison
Promega Corporation
United States, Santa fe
National Center for Genome Resources
Cherkasov, Artem R.
Canada, Vancouver
The University of British Columbia
Av-Gay, Yossef
Canada, Vancouver
The University of British Columbia
Brunham, Robert C.
Canada, Vancouver
The University of British Columbia
Fernandez, Rachel C.
Canada, Vancouver
The University of British Columbia
Finlay, Barton Brett
Canada, Vancouver
The University of British Columbia
Otto, Sarah P.
Canada, Vancouver
The University of British Columbia
Ouellette, Bf Francis
Canada, Vancouver
Centre for Molecular Medicine and Therapeutics
Keeling, Patrick J.
Canada, Vancouver
The University of British Columbia
Hancock, Robert E.W.
Canada, Vancouver
The University of British Columbia
Jones, Steven J.M.
Canada, Vancouver
British Columbia Cancer Agency
Statistics
Citations: 55
Authors: 12
Affiliations: 6
Identifiers
Doi:
10.1101/gr.341802
ISSN:
10889051
Research Areas
Genetics And Genomics