Burkholderia xenovorans: Difference between revisions
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{{Biorealm Genus}} | |||
==Classification== | |||
===Higher order taxa=== | |||
Bacteria; Proteobacteria; Betaprotobacteria; Burkholderiales; Burkholderiaceae; Burkholderia | |||
===Species=== | |||
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'''NCBI: [http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Tree&id=2&lvl=3&lin=f&keep=1&srchmode=1&unlock Taxonomy]''' | |||
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''Genus species'' | |||
Burkholderia xenovorans | |||
==Description and significance== | |||
Burkholderia xenovorans is an important aerobic degrader of polychlorinatred biphenyl (PCB), which is an organic chemical that has industrial use but is toxic to animals and humans. The LB400 strain is the most studied strain due to its ability to oxidize over 20 different PCB congeners. It was isolated in a landfill contaminated by PCB in New York over 20 years ago. | |||
Burkholderia xenovorans' environmental niche is in soil rhizospheres, which is the soil area surrounding plant roots. | |||
==Genome structure== | |||
The genome size of Burkholderia xenovorans varies between 7.4 to 9.3 Mbp, depending upon the particular strain. Burkholderia xenovorans has three circular replicons: chromosome 1 at 4.90 Mbp and chromosome 2 at 3.36 Mbp and a megaplasmid at 1.47 Mbp. Chromosome 1 contains homologs of dnaA (a chromosomal replication initiation protein) and dnaN (a DNA polymerase subunit). Chromosome 2 contains genes important for plasmid replication and partitioning, as well as other genes that help Burkholderia xenovorans adapt to it environmental niche. Unlike the chromosomes, the megaplasmid at 1.47 Mbp does not contain any essential functions or RNA. | |||
Describe the size and content of the genome. How many chromosomes? Circular or linear? Other interesting features? What is known about its sequence? | |||
Does it have any plasmids? Are they important to the organism's lifestyle? | |||
==Cell structure and metabolism== | |||
Describe any interesting features and/or cell structures; how it gains energy; what important molecules it produces. | |||
==Ecology== | |||
Describe any interactions with other organisms (included eukaryotes), contributions to the environment, effect on environment, etc. | |||
==Pathology== | |||
How does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms. | |||
==Application to Biotechnology== | |||
Does this organism produce any useful compounds or enzymes? What are they and how are they used? | |||
==Current Research== | |||
Enter summaries of the most recent research here--at least three required | |||
==References== | |||
[Sample reference] [http://ijs.sgmjournals.org/cgi/reprint/50/2/489 Takai, K., Sugai, A., Itoh, T., and Horikoshi, K. "''Palaeococcus ferrophilus'' gen. nov., sp. nov., a barophilic, hyperthermophilic archaeon from a deep-sea hydrothermal vent chimney". ''International Journal of Systematic and Evolutionary Microbiology''. 2000. Volume 50. p. 489-500.] | |||
Edited by student of [mailto:ralarsen@ucsd.edu Rachel Larsen] | |||
Revision as of 04:47, 26 August 2007
A Microbial Biorealm page on the genus Burkholderia xenovorans
Classification
Higher order taxa
Bacteria; Proteobacteria; Betaprotobacteria; Burkholderiales; Burkholderiaceae; Burkholderia
Species
|
NCBI: Taxonomy |
Genus species
Burkholderia xenovorans
Description and significance
Burkholderia xenovorans is an important aerobic degrader of polychlorinatred biphenyl (PCB), which is an organic chemical that has industrial use but is toxic to animals and humans. The LB400 strain is the most studied strain due to its ability to oxidize over 20 different PCB congeners. It was isolated in a landfill contaminated by PCB in New York over 20 years ago. Burkholderia xenovorans' environmental niche is in soil rhizospheres, which is the soil area surrounding plant roots.
Genome structure
The genome size of Burkholderia xenovorans varies between 7.4 to 9.3 Mbp, depending upon the particular strain. Burkholderia xenovorans has three circular replicons: chromosome 1 at 4.90 Mbp and chromosome 2 at 3.36 Mbp and a megaplasmid at 1.47 Mbp. Chromosome 1 contains homologs of dnaA (a chromosomal replication initiation protein) and dnaN (a DNA polymerase subunit). Chromosome 2 contains genes important for plasmid replication and partitioning, as well as other genes that help Burkholderia xenovorans adapt to it environmental niche. Unlike the chromosomes, the megaplasmid at 1.47 Mbp does not contain any essential functions or RNA.
Describe the size and content of the genome. How many chromosomes? Circular or linear? Other interesting features? What is known about its sequence? Does it have any plasmids? Are they important to the organism's lifestyle?
Cell structure and metabolism
Describe any interesting features and/or cell structures; how it gains energy; what important molecules it produces.
Ecology
Describe any interactions with other organisms (included eukaryotes), contributions to the environment, effect on environment, etc.
Pathology
How does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.
Application to Biotechnology
Does this organism produce any useful compounds or enzymes? What are they and how are they used?
Current Research
Enter summaries of the most recent research here--at least three required
References
Edited by student of Rachel Larsen
