Disease relevance of Psychrobacter

• The gene (pspPIM) encoding the PspPI DNA methyltransferase (MTase) associated with the PspPI restriction-modification (R-M) system (5'-GGNCC-3') of Psychrobacter species TA137 has been cloned and expressed in E. coli, and its nucleotide (nt) sequence has been determined [1].
• The amino acid sequence of the estA gene product showed a significant similarity with that of the triacylglycerol lipase from Psychrobacter immobilis (38% identity), triacylglycerol lipase from Moraxella sp. (36% identity), and two forms of carboxyl esterases from Acinetobacter calcoaceticus (17% and 17% identities) [2].

High impact information on Psychrobacter

• (type strain, strain ACAM 534) and Psychrobacter frigidicola sp. nov [3].
• ORF3 has a predicted size of 21.4 kDa and 29% identity to triacylglycerol lipase of Psychrobacter immobilis [4].
• However, using detailed phenotypic and chemotaxonomic characteristics and phylogenetic analysis based on their 16S rRNA gene sequences, strain CMS 39(T), the only strain from Group II, and strain CMS 56(T), a representative strain of Group III, were different from each other and from all recognized species of Psychrobacter [5].
• Psychrobacter nivimaris sp. nov., a heterotrophic bacterium attached to organic particles isolated from the South Atlantic (Antarctica) [6].
• Tolerance to 5% bile salts, nitrate reduction, citrate utilization, acid production from carbohydrates, alkaline phosphatase, acid phosphatase, C4 esterase, C14 lipase and valine arylamidase were found to differentiate strain 116 from Psychrobacter glacincola [7].

Chemical compound and disease context of Psychrobacter

• NADP+-dependent glutamate dehydrogenase in the Antarctic psychrotolerant bacterium Psychrobacter sp. TAD1. Characterization, protein and DNA sequence, and relationship to other glutamate dehydrogenases [8].
• These deep-sea strains were also discriminated from other known Psychrobacter species in phenotype, e.g. limited growth in the absence of NaCl (optimum at about 3% NaCl), positive urease activity, acid production from xylose and arabinose, and the presence of multiple fimbriae [9].
• The Antarctic psychrotolerant bacterium Psychrobacter sp. TAD1 contains two distinct glutamate dehydrogenases (GDH), each specific for either NADP+ or NAD+ [8].

Gene context of Psychrobacter

• Psychrobacter sp. TAD1 is a psychrotolerant bacterium from Antarctic frozen continental water that grows from 2 to 25 degrees C with optimal growth rate at 20 degrees C. The new isolate contains two glutamate dehydrogenases (GDH), differing in their cofactor specificities, subunit sizes and arrangements, and thermal properties [10].
• Cloning, sequence and structural features of a lipase from the antarctic facultative psychrophile Psychrobacter immobilis B10 [11].
• Corrigendum to "Cloning, sequence and structural features of a lipase from the antarctic facultative psychrophile Psychrobacter immobilis B10" [Biochim. Biophys. Acta 1171 (1993) 331-333] [12].
• A lipase gene (lip1) from the facultative psychrophilic strain Psychrobacter immobilis B10 has been cloned and sequenced [11].

References