Results 31 to 40 of about 288 (110)

Production of Toxic Volatile Trimethylbismuth by the Intestinal Microbiota of Mice

Journal of Toxicology, Volume 2011, Issue 1, 2011., 2011
The biotransformation of metals and metalloids into their volatile methylated derivatives by microbes growing under anaerobic conditions (e.g., the mammalian intestinal microbiota) plays an important role in spreading these compounds in the environment.
Britta Huber, Philip Dammann, Christine Krüger, Petra Kirsch, Beatrix Bialek, Roland A. Diaz-Bone, Reinhard Hensel, Shelley Bhattacharya   +7 more
wiley   +1 more source

S‐Layer Glycoproteins and Flagellins: Reporters of Archaeal Posttranslational Modifications

Archaea, Volume 2010, Issue 1, 2010., 2010
Many archaeal proteins undergo posttranslational modifications. S‐layer proteins and flagellins have been used successfully to study a variety of these modifications, including N‐linked glycosylation, signal peptide removal and lipid modification. Use of these well‐characterized reporter proteins in the genetically tractable model organisms, Haloferax ...
Ken F. Jarrell, Gareth M. Jones, Lina Kandiba, Divya B. Nair, Jerry Eichler, Joerg Soppa   +5 more
wiley   +1 more source

Effect of Oxygen and Redox Potential on Glucose Fermentation in Thermotoga maritima under Controlled Physicochemical Conditions

International Journal of Microbiology, Volume 2010, Issue 1, 2010., 2010
Batch cultures of Thermotoga maritima were performed in a bioreactor equipped with instruments adapted for experiments performed at 80∘C to mimic the fluctuating oxidative conditions in the hot ecosystems it inhabits. When grown anaerobically on glucose, T. maritima was shown to significantly decrease the redox potential (Eh) of the culture medium down
Raja Lakhal, Richard Auria, Sylvain Davidson, Bernard Ollivier, Alain Dolla, Moktar Hamdi, Yannick Combet-Blanc, Alfons J. M. Stams   +7 more
wiley   +1 more source

New methods for tightly regulated gene expression and highly efficient chromosomal integration of cloned genes for Methanosarcina species

Archaea, Volume 2, Issue 3, Page 193-203, 2008., 2008
A highly efficient method for chromosomal integration of cloned DNA into Methanosarcina spp. was developed utilizing the site‐specific recombination system from the Streptomyces phage φC31. Host strains expressing the φC31 integrase gene and carrying an appropriate recombination site can be transformed with non‐replicating plasmids carrying the ...
Adam M. Guss, Michael Rother, Jun Kai Zhang, Gargi Kulkkarni, William W. Metcalf   +4 more
wiley   +1 more source

AMP‐forming acetyl‐CoA synthetases in Archaea show unexpected diversity in substrate utilization

Archaea, Volume 2, Issue 2, Page 95-107, 2007., 2007
Adenosine monophosphate (AMP)‐forming acetyl‐CoA synthetase (ACS; acetate:CoA ligase (AMP‐forming), EC 6.2.1.1) is a key enzyme for conversion of acetate to acetyl‐CoA, an essential intermediate at the junction of anabolic and catabolic pathways. Phylogenetic analysis of putative short and medium chain acyl‐CoA synthetase sequences indicates that the ...
Cheryl Ingram-Smith, Kerry S. Smith
wiley   +1 more source

A putative viral defence mechanism in archaeal cells

Archaea, Volume 2, Issue 1, Page 59-72, 2006., 2006
Clusters of regularly spaced direct repeats, separated by unconserved spacer sequences, are ubiquitous in archaeal chromosomes and occur in some plasmids. Some clusters constitute around 1% of chromosomal DNA. Similarly structured clusters, generally smaller, also occur in some bacterial chromosomes.
Reidun Lillestøl, Peter Redder, Roger A. Garrett, Kim Brügger   +3 more
wiley   +1 more source

Toxicity of Organometal(loids)

, 2012
Journal of Toxicology, Volume 2012, Issue 1, 2012.
Elke Dopp, Shelley Bhattacharya, Alfred V. Hirner, Michael Aschner, Tanja Schwerdtle   +4 more
wiley   +1 more source

Structural analysis by reductive cleavage with LiAlH4 of an allyl ether choline‐phospholipid, archaetidylcholine, from the hyperthermophilic methanoarchaeon Methanopyrus kandleri

Archaea, Volume 1, Issue 2, Page 123-131, 2002., 2002
A choline‐containing phospholipid (PL‐4) in Methanopyrus kandleri cells was identified as archaetidylcholine, which has been described by Sprott et al. (1997). The PL‐4 consisted of a variety of molecular species differing in hydrocarbon composition. Most of the PL‐4 was acid‐labile because of its allyl ether bond. The identity of PL‐4 was confirmed by
Masateru Nishihara, Hiroyuki Morii, Koji Matsuno, Mami Ohga, Karl O. Stetter, Yosuke Koga   +5 more
wiley   +1 more source

Redox-sensitive DNA binding by homodimeric Methanosarcina acetivorans MsvR is modulated by cysteine residues [PDF]

, 2013
Background: Methanoarchaea are among the strictest known anaerobes, yet they can survive exposure to oxygen. The mechanisms by which they sense and respond to oxidizing conditions are unknown.
Elizabeth A Karr, Lessner, Daniel J, Catherine E Isom, Jessica L Turner, Daniel J Lessner, Isom, Catherine E, Turner, Jessica, Karr, Elizabeth A   +7 more
core   +1 more source

Differential regulation of Ota and Otb, two primary glycine betaine transporters in the methanogenic archaeon Methanosarcina mazei go1 [PDF]

, 2008
Methanogenic archaea accumulate glycine betaine in response to hypersalinity, but the regulation of proteins involved, their mechanism of activation and regulation of the corresponding genes are largely unknown.
Schmidt, S., Spanheimer, R., Pflueger, K., Koegl, S., Mueller, V., Hoffmann, M.   +5 more
core   +1 more source