Results 51 to 60 of about 6,066 (196)
The ecology of the extremely halophilic archaea [PDF]
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
Gene homologs of GlnK PII regulators and AmtB-type ammonium transporters are often paired on prokaryotic genomes, suggesting these proteins share an ancient functional relationship.
Soppa, Jörg +6 more
core +1 more source
The Function of Gas Vesicles in Halophilic Archaea and Bacteria: Theories and Experimental Evidence
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
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 +7 more
wiley +1 more source
Protein acetylation in archaea, bacteria, and eukaryotes
Proteins can be acetylated at the alpha-amino group of the N-terminal amino acid (methionine or the penultimate amino acid after methionine removal) or at the epsilon-amino group of internal lysines.
Soppa, Jörg (Prof. Dr.)
core +1 more source
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 +10 more
doaj +1 more source
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 +7 more
doaj +1 more source
Beyond PEGylation: Archaeal Lipids for Long‐Circulating Liposomes
Archaeal lipid‐based liposomes, particularly those containing caldarchaeol (GDGT), were found to significantly prolong the circulation time of vancomycin in rats, matching the pharmacokinetic properties of PEGylated systems. These findings suggest archaeal lipids as promising non‐PEG excipients for parenteral applications to minimize drug clearance ...
Viktor Sedlmayr +9 more
wiley +1 more source
Diurnally entrained anticipatory behavior in archaea. [PDF]
By sensing changes in one or few environmental factors biological systems can anticipate future changes in multiple factors over a wide range of time scales (daily to seasonal).
Kenia Whitehead +4 more
doaj +1 more source
The 13C hyperfine structure of the 5‐deazaflavin radical is elucidated by photo‐chemically induced dynamic nuclear polarization spectroscopy and compared to the flavin radical. Despite structural similarity to flavins, 5‐deazaflavins were long thought to act only as two‐electron transfer agents.
Sabrina Panter +6 more
wiley +1 more source

