Difference between revisions of "TrpB"
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=Expression and regulation= | =Expression and regulation= | ||
| − | * '''Operon:''' ''[[trpE]]-[[trpD]]-[[trpC]]-[[trpF]]-[[trpB]]-[[trpA]]'' | + | * '''Operon:''' ''[[trpE]]-[[trpD]]-[[trpC]]-[[trpF]]-[[trpB]]-[[trpA]]'' [http://www.ncbi.nlm.nih.gov/sites/entrez/3924737 PubMed] |
| − | * '''[[Sigma factor]]:''' [[SigA]] | + | * '''[[Sigma factor]]:''' [[SigA]] [http://www.ncbi.nlm.nih.gov/sites/entrez/6436812 PubMed] |
| − | * '''Regulation:''' induction by tryptophan ([[MtrB| TRAP]]) | + | * '''Regulation:''' induction by tryptophan ([[MtrB| TRAP]]) [http://www.ncbi.nlm.nih.gov/sites/entrez/1551827 PubMed] |
| − | * '''Regulatory mechanism:''' [[MtrB| TRAP]]: binding to the mRNA in the presence of tryptophan, this results in transcription termination | + | * '''Regulatory mechanism:''' [[MtrB| TRAP]]: binding to the mRNA in the presence of tryptophan, this results in transcription termination [http://www.ncbi.nlm.nih.gov/sites/entrez/8419914 PubMed] |
* '''Additional information:''' | * '''Additional information:''' | ||
| Line 120: | Line 120: | ||
=References= | =References= | ||
| − | <pubmed> 14976255, 3924737, 6436812 </pubmed> | + | <pubmed> 14976255, 3924737, 6436812,2422155,8419914, 1551827 </pubmed> |
# Author1, Author2 & Author3 (year) Title ''Journal'' '''volume:''' page-page. [http://www.ncbi.nlm.nih.gov/sites/entrez/PMID PubMed] | # Author1, Author2 & Author3 (year) Title ''Journal'' '''volume:''' page-page. [http://www.ncbi.nlm.nih.gov/sites/entrez/PMID PubMed] | ||
Revision as of 17:42, 27 May 2009
- Description: tryptophan synthase (beta subunit)
| Gene name | trpB |
| Synonyms | |
| Essential | no |
| Product | tryptophan synthase (beta subunit) |
| Function | biosynthesis of tryptophan |
| MW, pI | 43 kDa, 5.526 |
| Gene length, protein length | 1200 bp, 400 aa |
| Immediate neighbours | trpA, trpF |
| Get the DNA and protein sequences (Barbe et al., 2009) | |
Genetic context 
This image was kindly provided by SubtiList
| |
Contents
The gene
Basic information
- Coordinates:
Phenotypes of a mutant
Database entries
- DBTBS entry: [1]
- SubtiList entry: [2]
Additional information
The protein
Basic information/ Evolution
- Catalyzed reaction/ biological activity: L-serine + 1-C-(indol-3-yl)glycerol 3-phosphate = L-tryptophan + glyceraldehyde 3-phosphate + H2O (according to Swiss-Prot)
- Protein family:
- Paralogous protein(s):
Extended information on the protein
- Kinetic information:
- Domains:
- Modification:
- Cofactor(s):
- Effectors of protein activity:
- Interactions:
- Localization:
Database entries
- Structure:
- Swiss prot entry: P07600
- KEGG entry: BSU22640
- E.C. number: 4.2.1.20
Additional information
Expression and regulation
- Regulatory mechanism: TRAP: binding to the mRNA in the presence of tryptophan, this results in transcription termination 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
Gintaras Deikus, Paul Babitzke, David H Bechhofer
Recycling of a regulatory protein by degradation of the RNA to which it binds.
Proc Natl Acad Sci U S A: 2004, 101(9);2747-51
[PubMed:14976255]
[WorldCat.org]
[DOI]
(P p)
J Otridge, P Gollnick
MtrB from Bacillus subtilis binds specifically to trp leader RNA in a tryptophan-dependent manner.
Proc Natl Acad Sci U S A: 1993, 90(1);128-32
[PubMed:8419914]
[WorldCat.org]
[DOI]
(P p)
P Babitzke, P Gollnick, C Yanofsky
The mtrAB operon of Bacillus subtilis encodes GTP cyclohydrolase I (MtrA), an enzyme involved in folic acid biosynthesis, and MtrB, a regulator of tryptophan biosynthesis.
J Bacteriol: 1992, 174(7);2059-64
[PubMed:1551827]
[WorldCat.org]
[DOI]
(P p)
H Shimotsu, M I Kuroda, C Yanofsky, D J Henner
Novel form of transcription attenuation regulates expression the Bacillus subtilis tryptophan operon.
J Bacteriol: 1986, 166(2);461-71
[PubMed:2422155]
[WorldCat.org]
[DOI]
(P p)
D J Henner, L Band, H Shimotsu
Nucleotide sequence of the Bacillus subtilis tryptophan operon.
Gene: 1985, 34(2-3);169-77
[PubMed:3924737]
[WorldCat.org]
[DOI]
(P p)
H Shimotsu, D J Henner
Characterization of the Bacillus subtilis tryptophan promoter region.
Proc Natl Acad Sci U S A: 1984, 81(20);6315-9
[PubMed:6436812]
[WorldCat.org]
[DOI]
(P p)
- Author1, Author2 & Author3 (year) Title Journal volume: page-page. PubMed
