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Assignment of Vibrio sp. strain ABE-1 to Colwellia maris sp. nov., a new psychrophilic bacterium.
Int J Syst Bacteriol
October 1998
Bioscience and Chemistry Division, Hokkaido National Industrial Research Institute, Sapporo, Japan.
A psychrophilic bacterium, previously described as Vibrio sp. strain ABE-1T, has been reassigned by phenotypic characterization, chemotaxonomic analysis and 16S rRNA phylogenetic analysis. The organism was curved rods and it could reduce nitrate to nitrite and hydrolyse gelatin and DNA, but not chitin.
View Article and Find Full Text PDFPhosphatidylglycerol molecular species of photosynthetic membranes analyzed by high-performance liquid chromatography: theoretical considerations.
Lipids
February 1996
Laboratoire de Physiologie Végétale, Université de Neuchâtel, Switzerland.
A reversed-phase high-performance liquid chromatography technique was developed to separate, identify, and quantify individual phosphatidylglycerol (PG) molecular species in thylakoid membranes isolated from higher plant leaves. PG was first separated by thin-layer chromatography; then the dinitrobenzoyl derivatives of diacylglycerols produced after phospholipase C hydrolysis of PG were separated by a C18 reversed-phase column and detected at 254 nm. A linear response of the detector was observed in the range of 0.
View Article and Find Full Text PDFEffect of growth temperature on the positional distribution of eicosapentaenoic acid and trans hexadecenoic acid in the phospholipids of a Vibrio species of bacterium.
Lipids
February 1995
Department of Biological and Molecular Sciences, University of Stirling, Scotland.
Phosphatidylethanolamine (PE) and phosphatidylglycerol (PG) were isolated from a Vibrio species of bacterium, known to produce eicosapentaenoic acid (20:5n-3) and trans-hexadecenoic acid (16:1n-7), and subjected to phospholipase A2 degradation to determine the positional distribution of component fatty acids. At the two growth temperatures studied (20 and 5 degrees C), both 20:5n-3 and trans 16:1 n-7 were located mainly at position sn-2 in PE. Increases in the proportions of 20:5n-3 and trans 16:1n-7 in position sn-2 with decreasing growth temperature were balanced mainly by decreases in the level of iso-15:0.
View Article and Find Full Text PDFThe cis/trans isomerization of the double bond of a fatty acid as a strategy for adaptation to changes in ambient temperature in the psychrophilic bacterium, Vibrio sp. strain ABE-1.
Biochim Biophys Acta
June 1991
Department of Botany, Faculty of Science, Hokkaido University, Sapporo, Japan.
The major phospholipid, phosphatidylethanolamine (PE), of Vibrio sp. strain ABE-1 contains a unique trans-unsaturated fatty acid, 9-trans-hexadecenoic acid (16:1(9t], at the sn-2 position of the glycerol moiety. The major molecular species of PE that contain 16:1(9t) at the sn-2 position have either 9-cis-hexadecenoic acid (16:1(9c] or hexadecanoic acid (16:0) at the sn-1 position.
View Article and Find Full Text PDFPolar lipid composition of chloroplast thylakoids isolated from leaves grown under different lighting conditions.
Photosynth Res
January 1986
AFRC Photosynthesis Research Group, Department of Pure and Applied Biology, Imperial College of Science and Technology, SW7 2BB, London, UK.
The polar acyl lipid composition was determined for samples of chloroplast thylakoids isolated from Pisum sativum plants grown at light intensities of 50 and 300 μE·m(-2)·s(-1) and from Aesculus hippocastanum leaves taken from shade or sun environments. Lighting conditions had no major effect on lipid class composition except for a small increase in the amount of monogalactosyldiacylglycerol relative to other lipids in low compared with high light and shade compared with sun conditions. The thylakoids from low light and shade environments also had, relative to those from high light and sun conditions, a substantial decrease in the level of trans-hexadecenoic acid in phosphatidyglycerol.
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