Results 61 to 70 of about 41,567 (188)

Phenol biodegradation by halophilic archaea

International Biodeterioration & Biodegradation, 2016
Abstract Phenol is a toxic aromatic compound produced as a by-product of industrial activities. Biological treatment of highly saline wastewaters containing phenol can be performed through halophilic microorganisms. In this study, the ability of halophilic archaeal isolates to degrade phenol was investigated.
Acikgoz, Eda, Ozcan, Birgul
openaire   +2 more sources

Molecular‐Level Modulation of Proton Transport via Electron‐Proton Coupling in Bio‐p‐n Junctions

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
We developed a pH‐sensing device capable of operating in biological environments. A biohybrid p–n junction was constructed using bacteriorhodopsin (bR) and the photoconductive polymer poly(3‐hexylthiophene) (P3HT). Under light illumination, the photocurrent exhibits distinct transitions across various pH gradients, demonstrating the system's high ...
Chen Song, Yujia Lv, Haotian Pang, Haoqi Fan, Jiayin Huang, Weibin Zhou, Dan Luo, Aochen Wang   +7 more
wiley   +1 more source

Occurrence of the methylglyoxal bypass in halophilic Archaea [PDF]

FEMS Microbiology Letters, 1995
Eight species of halophilic Archaea were tested for the presence of the enzymes of the methylglyoxal bypass. Methylglyoxal synthase was found in extracts of all species tested, with the exception of Halobacterium salinarium and Halobacterium cutirubrum. The enzyme of Haloferax volcanii was most active at pH 7 in the absence of salt, and in the presence
Aharon Oren, Peter Gurevich
openaire   +2 more sources

Microbial diversity and ecological roles of halophilic microorganisms in Dingbian (Shaanxi, China) saline-alkali soils and salt lakes

BMC Microbiology
Halophilic microorganisms abound in numerous hypersaline environments, such as salt lakes, salt mines, solar salterns, and salted seafood. In the northwest of Dingbian county (Shaanxi province, China), there exists a belt of hypersaline habitats ...
Yue Ding, Juntao Ke, Tao Hong, Aodi Zhang, Xue Wu, Xinran Jiang, Shilong Shao, Ming Gong, Shengda Zhao, Liang Shen, Shaoxing Chen   +10 more
doaj   +1 more source

The Function of Gas Vesicles in Halophilic Archaea and Bacteria: Theories and Experimental Evidence

Life, 2012
A few extremely halophilic Archaea (Halobacterium salinarum, Haloquadratum walsbyi, Haloferax mediterranei, Halorubrum vacuolatum, Halogeometricum borinquense, Haloplanus spp.) possess gas vesicles that bestow buoyancy on the cells. Gas vesicles are also
Aharon Oren
doaj   +1 more source

S‐Adenosylmethionine (SAM) hydrolases counter increased SAM epimerisation in thermophilic archaea

The FEBS Journal, EarlyView.
S‐Adenosyl‐l‐methionine (SAM) is a vital enzyme cofactor. Epimerisation at the sulfonium centre of biologically active (SS,SCα)‐SAM is driven by heat, yielding biologically inactive (RS,SCα)‐SAM. Here, two novel archaeal SAM hydrolases from the thermophilic Sulfolobus acidocaldarius and the halophilic Haloferax volcanii are shown to cleave (RS,SCα)‐SAM.
Agnes Bartels, Michael K. F. Mohr, Phillip Nußbaum, Marie Joest, Bianca Wassmer, Laurent Rasquin, Sonja‐Verena Albers, Jennifer N. Andexer   +7 more
wiley   +1 more source

Biodegradation of Organic Pollutants by Halophilic Bacteria and Archaea [PDF]

Microbial Physiology, 2008
Hypersaline environments are important for both surface extension and ecological significance. As all other ecosystems, they are impacted by pollution. However, little information is available on the biodegradation of organic pollutants by halophilic microorganisms in such environments.
Sylvie, Le Borgne, Dayanira, Paniagua, Rafael, Vazquez-Duhalt   +2 more
openaire   +2 more sources

Bioprospecting for Novel Halophilic and Halotolerant Sources of Hydrolytic Enzymes in Brackish, Saline and Hypersaline Lakes of Romania

Microorganisms, 2020
Halophilic and halotolerant microorganisms represent promising sources of salt-tolerant enzymes that could be used in various biotechnological processes where high salt concentrations would otherwise inhibit enzymatic transformations.
Robert Ruginescu, Ioana Gomoiu, Octavian Popescu, Roxana Cojoc, Simona Neagu, Ioana Lucaci, Costin Batrinescu-Moteau, Madalin Enache   +7 more
doaj   +1 more source

Archaeal Cytoskeletal Protein CetZ1 Influences Assembly of the Motility Machinery

Molecular Microbiology, EarlyView.
The Haloferax volcanii tubulin‐like protein CetZ1 is required for rod‐cell morphogenesis and motility. We show that CetZ1 loss or GTPase inactivation impairs assembly of the motility machinery, including the archaellum base protein ArlD, the chemotaxis adaptor CheW1, and the response regulator CheY.
Hannah J. Brown, Md Imtiazul Islam, Juanfang Ruan, Matthew A. B. Baker, Solenne Ithurbide, Iain G. Duggin   +5 more
wiley   +1 more source

The ecology of the extremely halophilic archaea [PDF]

FEMS Microbiology Reviews, 1994
The extremely halophilic archaea (family Halobacteriaceae) are the dominant heterotrophic organisms in hypersaline environments in which salt concentrations exceed 250–300 g l−1. During the last decades our knowledge on the taxonomy, physiology and biochemistry of the Halobacterium group has greatly increased.
openaire   +1 more source