ArticleExtremophiles : life under extreme conditions2008
Di-myo-inositol phosphate and novel UDP-sugars accumulate in the extreme hyperthermophile Pyrolobus fumarii.
Article in Extremophiles : life under extreme conditions, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 21 citations in OpenAlex.
- Phenomics and Genomics Reveal Adaptation ofFrontiers in microbiology · 2019Article
- Molecular chaperone accumulation as a function of stress evidences adaptation to high hydrostatic pressure in the piezophilic archaeon Thermococcus barophilus.Scientific reports · 2016Article
- Microbial diversity and adaptation to high hydrostatic pressure in deep-sea hydrothermal vents prokaryotes.Extremophiles : life under extreme conditions · 2015Article
- Mannosylglycerate and di-myo-inositol phosphate have interchangeable roles during adaptation of Pyrococcus furiosus to heat stress.Applied and environmental microbiology · 2014Article
- Complete genome sequence of the hyperthermophilic chemolithoautotroph Pyrolobus fumarii type strain (1A).Standards in genomic sciences · 2011Article
- "Hot standards" for the thermoacidophilic archaeon Sulfolobus solfataricus.Extremophiles : life under extreme conditions · 2010Article
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The archaeon Pyrolobus fumarii, one of the most extreme members of hyperthermophiles known thus far, is able to grow at temperatures up to 113 degrees C. Over a decade after the description of this organism our knowledge about the structures and strategies underlying its remarkable thermal resistance remains incipient. The accumulation of a restricted number of charged organic solutes is a common response to heat stress in hyperthermophilic organisms and accordingly their role in thermoprotection has been often postulated. In this work, the organic solute pool of P. fumarii was characterized using 1H, 13C, and 31P NMR. Di-myo-inositol phosphate was the major solute (0.21 micromol/mg protein), reinforcing the correlation between the occurrence of this solute and hyperthermophily; in addition, UDP-sugars (total concentration 0.11 micromol/mg protein) were present. The structures of the two major UDP-sugars were identified as UDP-alpha-GlcNAc3NAc and UDP-alpha-GlcNAc3NAc-(4<--1)-beta-GlcpNAc3NAc. Interestingly, the latter compound appears to be derived from the first one by addition of a 2,3-N-acetylglucoronic acid unit, suggesting that these UDP-sugars are intermediates of an N-linked glycosylation pathway. To our knowledge the UDP-disaccharide has not been reported elsewhere. The physiological roles of these organic solutes are discussed.
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