ArticleMolecular microbiology2023
Discovery of a novel transcriptional regulator of sugar catabolism in archaea.
Article in Molecular microbiology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 13 citations in OpenAlex.
- Exploring archaeal resources for biomass-derived pentose utilization: pathways, extremozymes, and bioprocessing applications.World journal of microbiology & biotechnology · 2026Review
- A haloarchaeal VapBC toxin-antitoxin system: regulatory mechanism and role in establishing population heterogeneity to facilitate survival of subpopulations under stress conditions.Applied and environmental microbiology · 2026Article
- Dynamic acetylation of a conserved lysine impacts glycerol kinase activity and abundance in the haloarchaeon Haloferax volcanii.The Journal of biological chemistry · 2026Article
- Article
- Biochemical properties of glycerol kinase from the hypersaline-adapted archaeonApplied and environmental microbiology · 2025Article
- Elucidating metabolic pathways through genomic analysis in highly heavy metal-resistantHeliyon · 2024Article
- Sugar alcohol degradation in Archaea: uptake and degradation of mannitol and sorbitol in Haloarcula hispanica.Extremophiles : life under extreme conditions · 2024Article
- A TrmBL2-like transcription factor mediates the growth phase-dependent expression of halolysin SptA in a concentration-dependent manner inApplied and environmental microbiology · 2024Article
- Extremophiles in a changing world.Extremophiles : life under extreme conditions · 2024Review
- TbsP and TrmB jointly regulate gapII to influence cell development phenotypes in the archaeon Haloferax volcanii.Molecular microbiology · 2024Article
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Authors and funding
10 authors at 4 institutions in 2 countries.
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Abstract
The haloarchaeon Haloferax volcanii degrades D-glucose via the semiphosphorylative Entner-Doudoroff pathway and D-fructose via a modified Embden-Meyerhof pathway. Here, we report the identification of GfcR, a novel type of transcriptional regulator that functions as an activator of both D-glucose and D-fructose catabolism. We find that in the presence of D-glucose, GfcR activates gluconate dehydratase, glyceraldehyde-3-phosphate dehydrogenase and pyruvate kinase and also acts as activator of the phosphotransferase system and of fructose-1,6-bisphosphate aldolase, which are involved in uptake and degradation of D-fructose. In addition, glyceraldehyde-3-phosphate dehydrogenase and pyruvate kinase are activated by GfcR in the presence of D-fructose and also during growth on D-galactose and glycerol. Electrophoretic mobility shift assays indicate that GfcR binds directly to promoters of regulated genes. Specific intermediates of the degradation pathways of the three hexoses and of glycerol were identified as inducer molecules of GfcR. GfcR is composed of a phosphoribosyltransferase (PRT) domain with an N-terminal helix-turn-helix motif and thus shows homology to PurR of Gram-positive bacteria that is involved in the transcriptional regulation of nucleotide biosynthesis. We propose that GfcR of H. volcanii evolved from a PRT-like enzyme to attain a function as a transcriptional regulator of central sugar catabolic pathways in archaea.
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