Results 31 to 40 of about 3,303 (192)
Halophilic enzymes need high salt concentrations for activity and stability and are considered a promising source for biotechnological applications. The model study for haloadaptation has been proteins from the Halobacteria class of Archaea, where common
Nicolás Fuentes-Ugarte +4 more
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Stringency and relaxation among the halobacteria [PDF]
Accumulation of stable RNA and production of guanosine polyphosphates (ppGpp and pppGpp) were studied during amino acid starvation in four species of halobacteria. In two of the four species, stable RNA was under stringent control, whereas one of the remaining two species was relaxed and the other gave an intermediate phenotype.
C, Cimmino, G L, Scoarughi, P, Donini
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Restriction-modification (RM) systems have evolved to protect the cell from invading DNAs and are composed of two enzymes: a DNA methyltransferase and a restriction endonuclease. Although RM systems are present in both archaeal and bacterial genomes, DNA
Matthew eOuellette +3 more
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A Study of the Cell Envelope of the Halobacteria [PDF]
SUMMARY: Electron microscopy on thin sections of three different extremely halophilic Halobacterium species showed that their cell envelopes were of similar general construction: an inner membrane and an outer layer. The outer layer stains most strongly in the outermost part.
H, Steensland, H, Larsen
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Distribution of Denitrification among Haloarchaea: A Comprehensive Study
Microorganisms from the Halobacteria class, also known as haloarchaea, inhabit a wide range of ecosystems of which the main characteristic is the presence of high salt concentration.
Jose María Miralles-Robledillo +5 more
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Halobacterium salinarum is an extremely halophilic archaeon that is widely distributed in hypersaline environments and was originally isolated as a spoilage organism of salted fish and hides.
Friedhelm Pfeiffer +4 more
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Halobacteria as producers of polyhydroxyalkanoates [PDF]
Haloferax mediterranei, an extremely halophilic archaeobacterium, is an efficient producer of poly-s-hydroxyalkanoates (PHA) that are accumulated with high yield from starch as sole carbon and energy source, the advantages of using this microorganism as PHA producer are discussed.
Francisco Rodriguez-Valera +1 more
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The genus Natronomonas is classified on the family Haloarculaceae, within the class Halobacteria and currently includes six species isolated from salterns, saline or soda lakes, and salt mines. All are extremely halophilic (optimal growth at 20–25% [w/v]
Alicia García-Roldán +5 more
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Bergey's Manual of Systematics of Archaea and Bacteria (BMSAB) is a reference work aimed at undergraduates, graduate students, researchers, professors and experienced professionals at all levels. About a hundred new genera and 600+ new species have been described per year for each of the last 5 years.
Aharon Oren
wiley +1 more source
The ecology and taxonomy of halobacteria [PDF]
Abstract Archaebacterial halophiles dominate naturally occurring brines as the concentration of salts approaches saturation. Although only 4 genera of these bacteria have been recognised (Halobacterium, Halococcus, Natronobacterium, Natronococcus), chemotaxonomic studies indicate that there are 4 or 5 additional distinct groups.
W.D. Grant, H.N.M. Ross
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