Colwellia psychrerythraea: Difference between revisions
Line 20: | Line 20: | ||
==Description and significance== | ==Description and significance== | ||
''Colwellia psychrerythraea'' is considered an obligate psychrophile and appears rod-shaped and red in pigment. This flagella-containing organism can be found in continually cold marine environments including Arctic and Antarctic sea ice. Strain 34H was isolated from Arctic marine sediments. It has a growth temperature range of -1°C to 10°C. Optimal growth appears at 8°C, with maximum cell yield occurring at the subzero temperature of -1°C. Cells are able to swim in temperatures as low as -10°C. Growth can occur under deep sea pressures as well. | ''Colwellia psychrerythraea'' is considered an obligate psychrophile and appears rod-shaped and red in pigment. This flagella-containing organism can be found in continually cold marine environments including Arctic and Antarctic sea ice. Strain 34H, in particular, was isolated from Arctic marine sediments. It has a growth temperature range of -1°C to 10°C. Optimal growth appears at 8°C, with maximum cell yield occurring at the subzero temperature of -1°C. Cells are able to swim in temperatures as low as -10°C. Growth can occur under deep sea pressures as well. | ||
''C. psychrerythraea'' is considered a model organism for the study of life in permanently cold environments, specifically bacterial adaptations. These important adaptations include production of extracellular polymeric material for purposes of biofilm formation and cryoprotection, as well as enzymes with the ability to breakdown high-molecular-weight organic compounds. Particularly unique to this organism is the production of cold-active enzymes which show distinct heat instability and optimal activity occurring at low temperatures. | ''C. psychrerythraea'' is considered a model organism for the study of life in permanently cold environments, specifically bacterial adaptations. These important adaptations include production of extracellular polymeric material for purposes of biofilm formation and cryoprotection, as well as enzymes with the ability to breakdown high-molecular-weight organic compounds. Particularly unique to this organism is the production of cold-active enzymes which show distinct heat instability and optimal activity occurring at low temperatures. |
Revision as of 05:45, 1 May 2007
Classification
Higher order taxa
Bacteria; Proteobacteria; Gammaproteobacteria; Alteromonadales; Colwelliaceae; Colwellia
Genus
Colwellia psychrerythraea
Strain: 34H / ATCC BAA-681
NCBI: Taxonomy |
Description and significance
Colwellia psychrerythraea is considered an obligate psychrophile and appears rod-shaped and red in pigment. This flagella-containing organism can be found in continually cold marine environments including Arctic and Antarctic sea ice. Strain 34H, in particular, was isolated from Arctic marine sediments. It has a growth temperature range of -1°C to 10°C. Optimal growth appears at 8°C, with maximum cell yield occurring at the subzero temperature of -1°C. Cells are able to swim in temperatures as low as -10°C. Growth can occur under deep sea pressures as well.
C. psychrerythraea is considered a model organism for the study of life in permanently cold environments, specifically bacterial adaptations. These important adaptations include production of extracellular polymeric material for purposes of biofilm formation and cryoprotection, as well as enzymes with the ability to breakdown high-molecular-weight organic compounds. Particularly unique to this organism is the production of cold-active enzymes which show distinct heat instability and optimal activity occurring at low temperatures.
Genome structure
The complete genome of Colwellia psychrerythraea 34H has been sequenced and shown to be 5,373,180 nucleotides in length. The genome consists of one circular chromosome which codes for 117 structural RNAs and 4910 proteins. The circular DNA contains 38% guanine-cytosine base pairing.
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
example:
Edited by student of Rachel Larsen and Kit Pogliano