Difference between revisions of "PRD-containing transcription factors"
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| − | These proteins exert positive control of gene expression by transcription activation or transcription antitermination. They regulate the uptake and utilization of specific sugars that are transported by the phosphotransferase system (PTS). | + | These proteins exert positive control of gene expression by transcription activation or transcription antitermination. They regulate the uptake and utilization of specific sugars that are transported by the [[PTS|phosphotransferase system]] ([[PTS]]). |
| − | Their activity is negatively regulated in the absence of the specific inducer by phosphorylation by the corresponding Enzyme II of the PTS. This results in their inactivity. In the presence of the inducer, the phosphate group is drained to the transported substrate and the active regulators lead to expression of their corresponding catabolic operons. | + | Their activity is negatively regulated in the absence of the specific inducer by phosphorylation by the corresponding Enzyme II of the [[PTS]]. This results in their inactivity. In the presence of the inducer, the phosphate group is drained to the transported substrate and the active regulators lead to expression of their corresponding catabolic operons. |
In addition, many PRD-containing regulators are positively controlled by [[PtsH|HPr]]-dependent phosphorylation. This phosphorylation occurs in the absence of glucose and other preferred carbon sources and is part of catabolite repression. | In addition, many PRD-containing regulators are positively controlled by [[PtsH|HPr]]-dependent phosphorylation. This phosphorylation occurs in the absence of glucose and other preferred carbon sources and is part of catabolite repression. | ||
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| + | PRD: [[PTS]] regulation domain {{PubMed|9663674}} | ||
==Transcriptional antiterminators== | ==Transcriptional antiterminators== | ||
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* [[LevR]]: control of fructose utilization (''[[levD]]-[[levE]]-[[levF]]-[[levG]]-[[sacC]]'') | * [[LevR]]: control of fructose utilization (''[[levD]]-[[levE]]-[[levF]]-[[levG]]-[[sacC]]'') | ||
* [[LicR]]: control of lichenan utilization (''[[licB]]-[[licC]]-[[licA]]-[[licH]]'') | * [[LicR]]: control of lichenan utilization (''[[licB]]-[[licC]]-[[licA]]-[[licH]]'') | ||
| − | * [[ManR]]: control of mannose utilization | + | * [[ManR]]: control of mannose utilization (''[[manP]]-[[manA]]-[[yjdF]]'') |
| − | * [[MtlR]]: control of mannitol utilization | + | * [[MtlR]]: control of mannitol utilization (''[[mtlA]]-[[mtlF]]-[[mtlD]]'') |
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| + | ==Reviews== | ||
| + | <pubmed>9663674,11751049 17158705 12437213 23318733</pubmed> | ||
| + | |||
| + | ==Back to [[Protein families]]== | ||
Latest revision as of 17:31, 6 September 2018
These proteins exert positive control of gene expression by transcription activation or transcription antitermination. They regulate the uptake and utilization of specific sugars that are transported by the phosphotransferase system (PTS). Their activity is negatively regulated in the absence of the specific inducer by phosphorylation by the corresponding Enzyme II of the PTS. This results in their inactivity. In the presence of the inducer, the phosphate group is drained to the transported substrate and the active regulators lead to expression of their corresponding catabolic operons. In addition, many PRD-containing regulators are positively controlled by HPr-dependent phosphorylation. This phosphorylation occurs in the absence of glucose and other preferred carbon sources and is part of catabolite repression.
PRD: PTS regulation domain PubMed
Contents
Transcriptional antiterminators
- GlcT: allows expression of the ptsG-ptsH-ptsI operon in the presence of glucose
- LicT: allows expression of the bglS gene and the bglP-bglH operon in the presence of ß-glucosides
- SacT: allows expression of the sacP-sacA operon in the presence of sucrose
- SacY: allows expression of the sacX-sacY operon and the sacB gene in the presence of sucrose
Transcriptional activators
- LevR: control of fructose utilization (levD-levE-levF-levG-sacC)
- LicR: control of lichenan utilization (licB-licC-licA-licH)
- ManR: control of mannose utilization (manP-manA-yjdF)
- MtlR: control of mannitol utilization (mtlA-mtlF-mtlD)
Reviews
Philippe Joyet, Houda Bouraoui, Francine Moussan Désirée Aké, Meriem Derkaoui, Arthur Constant Zébré, Thanh Nguyen Cao, Magali Ventroux, Sylvie Nessler, Marie-Françoise Noirot-Gros, Josef Deutscher, Eliane Milohanic
Transcription regulators controlled by interaction with enzyme IIB components of the phosphoenolpyruvate: sugar phosphotransferase system.
Biochim Biophys Acta: 2013, 1834(7);1415-24
[PubMed:23318733]
[WorldCat.org]
[DOI]
(P p)
Josef Deutscher, Christof Francke, Pieter W Postma
How phosphotransferase system-related protein phosphorylation regulates carbohydrate metabolism in bacteria.
Microbiol Mol Biol Rev: 2006, 70(4);939-1031
[PubMed:17158705]
[WorldCat.org]
[DOI]
(P p)
David B Greenberg, Jorg Stülke, Milton H Saier
Domain analysis of transcriptional regulators bearing PTS regulatory domains.
Res Microbiol: 2002, 153(8);519-26
[PubMed:12437213]
[WorldCat.org]
[DOI]
(P p)
H van Tilbeurgh, N Declerck
Structural insights into the regulation of bacterial signalling proteins containing PRDs.
Curr Opin Struct Biol: 2001, 11(6);685-93
[PubMed:11751049]
[WorldCat.org]
[DOI]
(P p)
J Stülke, M Arnaud, G Rapoport, I Martin-Verstraete
PRD--a protein domain involved in PTS-dependent induction and carbon catabolite repression of catabolic operons in bacteria.
Mol Microbiol: 1998, 28(5);865-74
[PubMed:9663674]
[WorldCat.org]
[DOI]
(P p)
