Results 181 to 190 of about 16,549 (213)

Carotenoids of an Antarctic psychrotolerant bacterium, Sphingobacterium antarcticus, and a mesophilic bacterium, Sphingobacterium multivorum

Archives of Microbiology, 2000
The major carotenoid pigments of an Antarctic psychrotolerant bacterium, Sphingobacterium antarcticus, and a mesophilic bacterium, Sphingobacterium multivorum, were identified as zeaxanthin, beta-cryptoxanthin, and beta-carotene. Analysis was based on ultraviolet-visible spectroscopy, mass spectroscopy, and reversed-phase HPLC.
M V, Jagannadham, M K, Chattopadhyay, C, Subbalakshmi, M, Vairamani, K, Narayanan, C M, Rao, S, Shivaji   +6 more
openaire   +2 more sources

Characterization of a hydrocarbon degrading psychrotrophic Antarctic bacterium

Antarctic Science, 1997
Antarctic soil chronically exposed to gas-oil was analysed in order to isolate and study the growth conditions of hydrocarbon degrading bacteria. Soil samples taken near the shoreline in Jubany Station (King George Island, South Shetland Islands) were used as inoculum in liquid culture media with crude oil as sole carbon source.
Walter P. Mac Cormack, Elda R. Fraile
openaire   +1 more source

Metabolites from an Antarctic Sponge-Associated Bacterium, Pseudomonas aeruginosa

Journal of Natural Products, 1996
In an ongoing survey of the bioactive potential of microorganisms associated with marine invertebrates, the culture media of a sponge-associated bacterial strain of Pseudomonas aeruginosa was found to contain metabolites which inhibit the growth of several Gram-positive microorganisms. A series of diketopiperazines (1-6) including a new natural product
G S, Jayatilake, M P, Thornton, A C, Leonard, J E, Grimwade, B J, Baker   +4 more
openaire   +2 more sources

Crystal Structure of Alkaline Phosphatase from the Antarctic Bacterium TAB5

Journal of Molecular Biology, 2007
Alkaline phosphatases (APs) are non-specific phosphohydrolases that are widely used in molecular biology and diagnostics. We describe the structure of the cold active alkaline phosphatase from the Antarctic bacterium TAB5 (TAP). The fold and the active site geometry are conserved with the other AP structures, where the monomer has a large central beta ...
Ellen, Wang, Dimitris, Koutsioulis, Hanna-Kirsti S, Leiros, Ole Andreas, Andersen, Vassilis, Bouriotis, Edward, Hough, Pirkko, Heikinheimo   +6 more
openaire   +2 more sources

Increase in Oxidative Stress at Low Temperature in an Antarctic Bacterium

Current Microbiology, 2010
Association between cold stress and oxidative stress was demonstrated by measuring the activity of two antioxidant enzymes and the level of free radicals generated in two batches of cells of an Antarctic bacterium Pseudomonas fluorescens MTCC 667, grown at 22 and 4°C.
M K, Chattopadhyay, G, Raghu, Y V R K, Sharma, A R, Biju, M V, Rajasekharan, S, Shivaji   +5 more
openaire   +2 more sources

Preliminary crystallographic studies of citrate synthase from an Antarctic psychrotolerant bacterium

Acta Crystallographica Section D Biological Crystallography, 1998
Recombinant citrate synthase from a psychrotolerant bacterium, DS2-3R, recently isolated in Antarctica, has been crystallized. The crystals belong to space group P6122 or P6522, with cell dimensions a = b = 70.8, c = 307.8 A. Diffraction data collected on a synchrotron from a cryoprotected crystal extends to at least 2.0 A.
U, Gerike, R J, Russell, M J, Danson, N J, Russell, D W, Hough, G L, Taylor   +5 more
openaire   +2 more sources

The truncated hemoglobins in the Antarctic psychrophilic bacterium Pseudoalteromonas haloplanktis TAC125

Gene, 2007
The genome sequence of the Antarctic Gram-negative marine eubacterium Pseudoalteromonas haloplanktis TAC125 is a potential source of useful data on proteins from a cold-adapted microorganism. Identifying the bases of protein adaptation to higher or lower temperatures is important to understand the relationship between structure/function and life ...
D. GIORDANO, PARRILLI, ERMENEGILDA, A. DETTAÏ, R. RUSSO, G. BARBIERO, MARINO, GENNARO, G. LECOINTRE, G. DI PRISCO, TUTINO, MARIA LUISA, C. VERDE   +9 more
openaire   +5 more sources

Anti-biofilm activity of the Antarctic marine bacterium Pseudoalteromonas haloplanktis TAC125

Research in Microbiology, 2013
Considering the increasing impact of bacterial biofilms on human health, industrial and food-processing activities, the interest in the development of new approaches for the prevention and treatment of adhesion and biofilm formation capabilities has increased.
PAPA, Rosanna, Ermenegilda Parrilli, Filomena Sannino, Gaetano Barbato, Maria Luisa Tutino, ARTINI, Marco, SELAN, Laura   +6 more
openaire   +4 more sources

Regulated Recombinant Protein Production in the Antarctic Bacterium Pseudoalteromonas haloplanktis TAC125

2011
This review reports results from our laboratory on the development of an effective inducible expression system for the homologous/heterologous protein production in cold-adapted bacteria. Recently, we isolated and characterized a regulative genomic region from Pseudoalteromonas haloplanktis TAC125; in particular, a two-component regulatory system was ...
RIPPA, VALENTINA, PAPA, ROSANNA, GIULIANI, MARIA, PEZZELLA, Cinzia, PARRILLI, ERMENEGILDA, TUTINO, MARIA LUISA, MARINO, GENNARO, DUILIO, ANGELA   +7 more
openaire   +4 more sources

Characterization of a halotolerant-psychroloterant bacterium from dry valley Antarctic soil

Advances in Space Research, 1983
The saline soils of the ice free dry valleys of Victoria Land, Antarctica may provide the closest analog on Earth to Martian conditions. We have initiated a study aimed at examining microbial adaptations to the harsh environment of these dry valley soils. In this report we describe the characterization of one bacterium, strain A4a, isolated from Taylor
K J, Miller, S B, Leschine, R L, Huguenin   +2 more
openaire   +2 more sources