Chloroflexus aurantiacus: Difference between revisions
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The cytoplasmic membrane is a crucial aspect of the overall cellular structure of ''C. aurantiacus''. Several chlorosomes are attached to the inner wall of the cytoplasmic membrane. These serve to aid ''C. aurantiacus'' with its' photosynthetic processes, acting as light-harvesting units. These chlorosomes are also noted for containing bacteriochlorophyll c; a photosynthetic pigment that is only known to occur within ''Chloroflexi''. | The cytoplasmic membrane is a crucial aspect of the overall cellular structure of ''C. aurantiacus''. Several chlorosomes are attached to the inner wall of the cytoplasmic membrane. These serve to aid ''C. aurantiacus'' with its' photosynthetic processes, acting as light-harvesting units. These chlorosomes are also noted for containing bacteriochlorophyll c; a photosynthetic pigment that is only known to occur within ''Chloroflexi''. | ||
==Ecology | ==Metabolism== | ||
==Ecology== | |||
Habitat; symbiosis; biogeochemical significance; contributions to environment.<br> | Habitat; symbiosis; biogeochemical significance; contributions to environment.<br> | ||
If relevant, how does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.<br><br> | If relevant, how does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.<br><br> | ||
Revision as of 20:57, 24 April 2010
Classification
Bacteria (Domain); Chloroflexi (Phylum); Chloroflexi (Class); Chloroflexales (Order); Chloroflexaceae (Family) [Others may be used. Use NCBI link to find]
Species
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NCBI: Taxonomy |
Chloroflexus aurantiacus
Description and Significance
C. aurantiacus is described as anoxygenic, thermophilic, filamentous, gliding, phototrophic bacteria commonly found in hot springs under normal to alkaline pH conditions. C. aurantiacus is a gram-negative organism. The optimal temperature range for the growth for this organism is approximately 50-60°C. It is commonly known to exist in areas with high sulfide concentrations and adequate periods of direct sunlight. C. aurantiacus can be found in microbial mats with other strains of photosynthetic bacteria or found in isolation. C. aurantiacus is commonly utilized as a model organism and is found to be critical to scientific research into the evolution of photosynthetic organisms.
Genome Structure
The genome for C. aurantiacus has been completely sequenced by the U.S. Department of Energy's Joint Genome Institute. Its genetic code consists of 5,258,241 base pairs of DNA concentrated within a single circular chromosome. 3,990 genes have been sequenced within this organism's genome, but of these, 219 possess a function unknown to scientists at this time. 80% of the genome of C. aurantiacus is known to code for functional proteins relevant to the sustainability of the cell. No portion of the genome is utilized for RNA modification. 61 structural RNAs are also encoded within the genome of C. aurantiacus.
Cell Structure
The cellular structure of this organism primarily contains a thin layer of peptidoglycan. This peptidoglycan is a variant that mainly utilizes L-ornithine as a diamino acid. Lipopolysaccharides are entirely absent from the outer membrane. However, studies cannot conclude whether or not this organism entirely lacks an outer membrane.
The cytoplasmic membrane is a crucial aspect of the overall cellular structure of C. aurantiacus. Several chlorosomes are attached to the inner wall of the cytoplasmic membrane. These serve to aid C. aurantiacus with its' photosynthetic processes, acting as light-harvesting units. These chlorosomes are also noted for containing bacteriochlorophyll c; a photosynthetic pigment that is only known to occur within Chloroflexi.
Metabolism
Ecology
Habitat; symbiosis; biogeochemical significance; contributions to environment.
If relevant, how does this organism cause disease? Human, animal, plant hosts? Virulence factors, as well as patient symptoms.
References
Author
Page authored by Eric Mrozek & Bob Moore, students of Prof. Jay Lennon at Michigan State University.
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