ValS

• Description: valyl-tRNA synthetase
  
  

Gene name	valS
Synonyms
Essential	yes PubMed
Product	valyl-tRNA synthetase
Function	translation
Gene expression levels in SubtiExpress: valS
Metabolic function and regulation of this protein in SubtiPathways: valS
MW, pI	101 kDa, 4.868
Gene length, protein length	2640 bp, 880 aa
Immediate neighbours	folC, yszA
Sequences	Protein DNA DNA_with_flanks
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

translation, essential genes, most abundant proteins

This gene is a member of the following regulons

T-box, Efp-dependent proteins

The gene

Basic information

• Locus tag: BSU28090

Phenotypes of a mutant

essential PubMed

Database entries

• BsubCyc: BSU28090

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: ATP + L-valine + tRNA(Val) = AMP + diphosphate + L-valyl-tRNA(Val) (according to Swiss-Prot)

• Protein family: ValS type 1 subfamily (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactors:

• Effectors of protein activity:

• Interactions:

• Localization:

Database entries

• BsubCyc: BSU28090

• Structure: 1IYW (from Thermus thermophilus, 41% identity, 60% similarity) PubMed

• UniProt: Q05873

• KEGG entry: [3]

• E.C. number: 6.1.1.9

Expression and regulation

• Operon: valS-folC PubMed

• Expression browser: valS PubMed

• Sigma factor: SigA PubMed

• Regulation:
  • induced by valine limitation (T-box) PubMed

• Regulatory mechanism:
  • T-box: riboswitch, transcription termination/antitermination PubMed

• Additional information:
  • translation is likely to require Efp due to the presence of several consecutive proline residues PubMed
  • belongs to the 100 most abundant proteins PubMed
  • number of protein molecules per cell (minimal medium with glucose and ammonium): 1169 PubMed
  • number of protein molecules per cell (complex medium with amino acids, without glucose): 3552 PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Reviews

Ana Gutiérrez-Preciado, Tina M Henkin, Frank J Grundy, Charles Yanofsky, Enrique Merino
Biochemical features and functional implications of the RNA-based T-box regulatory mechanism.
Microbiol Mol Biol Rev: 2009, 73(1);36-61
[PubMed:19258532] [WorldCat.org] [DOI] (I p)