Abstract
A psychrotrophic bacterium Colwellia sp. NJ341 from Antarctic sea ice could grow at -5 and 22°C, and the extent of cellular protein content and growth were greater at low temperatures (0-10°C) than at higher temperatures. SDS-PAGE analysis demonstrated the presence of a 7 kDa cold-shock protein. The further result of two-dimensional electrophoresis (2-DE) showed that two proteins a and c were newly synthesized at near-freezing temperatures. With matrix-assisted laser desorption/ionization mass spectrometry (MALDI-TOF MS) analysis, proteins a and c were identified as glutathione S-transferase (GST) and cold-shock protein A (CspA), respectively, which were involved in cold-adaptation at near-freezing temperature in an Antarctic psychrophilic bacterium Colwellia sp. NJ341.
| Original language | English |
|---|---|
| Pages (from-to) | 311-316 |
| Number of pages | 6 |
| Journal | World Journal of Microbiology and Biotechnology |
| Volume | 22 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 2006 |
| Externally published | Yes |
Keywords
- Cold-adaptation
- CspA
- GST
- Near-freezing temperature
- Psychrophilic bacterium
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