PurR
- Description: transcription repressor of the pur operon
| Gene name | purR |
| Synonyms | yabI |
| Essential | no |
| Product | transcription repressor of the pur operon |
| Function | regulation of purine biosynthesis |
| Interactions involving this protein in SubtInteract: PurR | |
| Metabolic function and regulation of this protein in SubtiPathways: Nucleotides (regulation), Ala, Gly, Ser | |
| MW, pI | 31 kDa, 5.771 |
| Gene length, protein length | 855 bp, 285 aa |
| Immediate neighbours | ispE, yabJ |
| Get the DNA and protein sequences (Barbe et al., 2009) | |
Genetic context 
This image was kindly provided by SubtiList
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Contents
Categories containing this gene/protein
biosynthesis/ acquisition of nucleotides, transcription factors and their control
This gene is a member of the following regulons
The PurR regulon
The gene
Basic information
- Locus tag: BSU00470
Phenotypes of a mutant
Database entries
- DBTBS entry: [1]
- SubtiList entry: [2]
Additional information
The protein
Basic information/ Evolution
- Biological activity: transcriptional repressor of purine biosynthetic operons
- Protein family: purine/pyrimidine phosphoribosyltransferase family (according to Swiss-Prot)
- Paralogous protein(s):
Extended information on the protein
- Kinetic information:
- Domains:
- Modification:
- Cofactor(s):
- Effectors of protein activity: PRPP acts as inducer, binding results in release of PurR from the operator PubMed
Database entries
- UniProt: P37551
- KEGG entry: [3]
- E.C. number:
Additional information
requires YabJ for in vivo activity
Expression and regulation
- Sigma factor:
- Regulation: negative autoregulation, induction in the presence of PRPP PubMed
- Additional information:
Biological materials
- Mutant:
- Expression vector:
- lacZ fusion:
- GFP fusion:
- two-hybrid system:
- Antibody:
Labs working on this gene/protein
Your additional remarks
References
Shuobo Shi, Tao Chen, Zhigang Zhang, Xun Chen, Xueming Zhao
Transcriptome analysis guided metabolic engineering of Bacillus subtilis for riboflavin production.
Metab Eng: 2009, 11(4-5);243-52
[PubMed:19446032]
[WorldCat.org]
[DOI]
(I p)
Per Nygaard, Hans H Saxild
The purine efflux pump PbuE in Bacillus subtilis modulates expression of the PurR and G-box (XptR) regulons by adjusting the purine base pool size.
J Bacteriol: 2005, 187(2);791-4
[PubMed:15629952]
[WorldCat.org]
[DOI]
(P p)
Pekka Rappu, Terhi Pullinen, Pekka Mäntsälä
In vivo effect of mutations at the PRPP binding site of the Bacillus subtilis purine repressor.
J Bacteriol: 2003, 185(22);6728-31
[PubMed:14594850]
[WorldCat.org]
[DOI]
(P p)
Aloke Kumar Bera, Jianghai Zhu, Howard Zalkin, Janet L Smith
Functional dissection of the Bacillus subtilis pur operator site.
J Bacteriol: 2003, 185(14);4099-109
[PubMed:12837784]
[WorldCat.org]
[DOI]
(P p)
Sangita C Sinha, Joseph Krahn, Byung Sik Shin, Diana R Tomchick, Howard Zalkin, Janet L Smith
The purine repressor of Bacillus subtilis: a novel combination of domains adapted for transcription regulation.
J Bacteriol: 2003, 185(14);4087-98
[PubMed:12837783]
[WorldCat.org]
[DOI]
(P p)
H H Saxild, K Brunstedt, K I Nielsen, H Jarmer, P Nygaard
Definition of the Bacillus subtilis PurR operator using genetic and bioinformatic tools and expansion of the PurR regulon with glyA, guaC, pbuG, xpt-pbuX, yqhZ-folD, and pbuO.
J Bacteriol: 2001, 183(21);6175-83
[PubMed:11591660]
[WorldCat.org]
[DOI]
(P p)
M Weng, H Zalkin
Mutations in the Bacillus subtilis purine repressor that perturb PRPP effector function in vitro and in vivo.
Curr Microbiol: 2000, 41(1);56-9
[PubMed:10919400]
[WorldCat.org]
[DOI]
(P p)
P Rappu, B S Shin, H Zalkin, P Mäntsälä
A role for a highly conserved protein of unknown function in regulation of Bacillus subtilis purA by the purine repressor.
J Bacteriol: 1999, 181(12);3810-5
[PubMed:10368157]
[WorldCat.org]
[DOI]
(P p)
M Weng, P L Nagy, H Zalkin
Identification of the Bacillus subtilis pur operon repressor.
Proc Natl Acad Sci U S A: 1995, 92(16);7455-9
[PubMed:7638212]
[WorldCat.org]
[DOI]
(P p)
