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An extremely halophilic red micro-organism designated strain TM(T) was isolated from a solar saltern in Alexandria, Egypt. The micro-organism stains gram-negative, is very pleomorphic, non-motile and strictly aerobic and requires at least 10 g NaCl l(-1) for growth. The growth optimum is 250 g NaCl l(-1). Growth is also observed over a wide range of MgSO4(More)
Genome function is dynamically regulated in part by chromatin, which consists of the histones, non-histone proteins and RNA molecules that package DNA. Studies in Caenorhabditis elegans and Drosophila melanogaster have contributed substantially to our understanding of molecular mechanisms of genome function in humans, and have revealed conservation of(More)
A red-pigmented, Gram-negative, motile, strictly aerobic, mesophilic, oval- or short rod-shaped bacterium (TDMA-17(T)) was isolated from fresh water collected at Misasa, a radioactive site in Japan. TDMA-17(T) was slightly tolerant against gamma-ray irradiation, and effectively produced carotenoids (2.8 mg g(-1) dry cells) including, astaxanthin and(More)
Four gamma- and UV-radiation-resistant bacterial strains, designated TDMA-24(T), TDMA-24-2, TDMA-24-3 and TDMA-24-4, were isolated from a fresh-water sample collected at Misasa, Tottori, Japan. Cells of these strains were Gram-reaction-positive, non-motile, non-spore-forming, rod-shaped and formed red colonies. The genomic DNA G+C contents ranged from 70.5(More)
The core lipids, polar and non polar lipids, of the novel canthaxanthin-producing archaeon, Haloferax alexandrinus strain TM(T), were investigated using thin-layer chromatography (TLC), spectrophotometry, electron ionization-mass spectroscopy (EI-MS), fast atom bombardment mass spectrometry (FAB-MS), nuclear magnetic response spectrometry (13C-NMR) and high(More)
A yellow-pigmented, Gram-negative, strictly aerobic, rod-shaped bacterium (TDMA-5(T)) was isolated from a freshwater sample collected at Misasa (Tottori, Japan). The DNA G+C content was 38.6 mol%. Major fatty acids were iso-C(15 : 0), iso-C(17 : 0) 3-OH and summed feature 4 (iso-C(15 : 0) 2-OH and/or C(16 : 1)omega7c). MK-7 was the predominant respiratory(More)
Chromatin environments differ greatly within a eukaryotic genome, depending on expression state, chromosomal location, and nuclear position. In genomic regions characterized by high repeat content and high gene density, chromatin structure must silence transposable elements but permit expression of embedded genes. We have investigated one such region,(More)
A yellow-pigmented, Gram-negative, motile, strictly aerobic, pleomorphic bacterium (strain TDMA-16(T)) was isolated from a freshwater sample collected at Misasa (Tottori, Japan). Strain TDMA-16(T) was slightly tolerant to gamma-ray irradiation and produced carotenoids, including zeaxanthin, nostoxanthin and an unknown carotenoid, effectively [1.7 mg (g dry(More)
A gamma- and UV-radiation-tolerant, pale-pink strain (TDMA-uv53T) was isolated from a freshwater sample collected at Misasa (Tottori, Japan), after exposure of the water sample to UV radiation. The cells stained Gram-positive and were non-motile, rod-shaped and non-spore-forming. The DNA G+C content of the strain was 69.1 mol%. Phylogenetic analysis based(More)
Astaxanthin (2) (Figure 1) is a red carotenoid renowned for a high antioxidant activity.1 Owing to the protective function as well as the profitable effect on organoleptic properties, the use of this carotenoid benefits consumer acceptance of commercial products. Currently, it is extensively used as feed additives for fish, lobsters and chickens.(More)