ThrZ

• Description: threonyl-tRNA synthetase (minor)
  
  

Gene name	thrZ
Synonyms	thrS2
Essential	no
Product	threonyl-tRNA synthetase (minor)
Function	translation
Gene expression levels in SubtiExpress: thrZ
Metabolic function and regulation of this protein in SubtiPathways: tRNA charging
MW, pI	73 kDa, 5.753
Gene length, protein length	1914 bp, 638 aa
Immediate neighbours	ywhA, mmr
Sequences	Protein DNA Advanced_DNA
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

translation

This gene is a member of the following regulons

T-box

The gene

Basic information

• Locus tag: BSU37560

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: ATP + L-threonine + tRNA(Thr) = AMP + diphosphate + L-threonyl-tRNA(Thr) (according to Swiss-Prot)

• Protein family: class-II aminoacyl-tRNA synthetase family (according to Swiss-Prot)

• Paralogous protein(s): ThrS, one of the two proteins has to be present for viability PubMed

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization:
  • cytoplasm (according to Swiss-Prot)

Database entries

• Structure: 1TJE (from Escherichia coli, 43% identity, 65% similarity) PubMed

• UniProt: P18256

• KEGG entry: [3]

• E.C. number: 6.1.1.3

Additional information

• subject to Clp-dependent proteolysis upon glucose starvation PubMed

Expression and regulation

• Operon: thrZ-ywhA PubMed

• Expression browser: thrZ PubMed

• Sigma factor: SigA PubMed

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

• Regulatory mechanism:
  • T-box: RNA switch, transcriptional antitermination PubMed

• Additional information:
  • subject to Clp-dependent proteolysis upon glucose starvation PubMed
  • the amount of the mRNA is substantially decreased upon depletion of RNase Y PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Lehnik-Habrink M, Schaffer M, Mäder U, Diethmaier C, Herzberg C, Stülke J  
RNA processing in Bacillus subtilis: identification of targets of the essential RNase Y. 
Mol Microbiol. 2011 81(6): 1459-1473. 
PubMed:21815947

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)

Helena B Thomaides, Ella J Davison, Lisa Burston, Hazel Johnson, David R Brown, Alison C Hunt, Jeffery Errington, Lloyd Czaplewski
Essential bacterial functions encoded by gene pairs.
J Bacteriol: 2007, 189(2);591-602
[PubMed:17114254] [WorldCat.org] [DOI] (P p)

N Gendron, H Putzer, M Grunberg-Manago
Expression of both Bacillus subtilis threonyl-tRNA synthetase genes is autogenously regulated.
J Bacteriol: 1994, 176(2);486-94
[PubMed:8288542] [WorldCat.org] [DOI] (P p)

H Putzer, N Gendron, M Grunberg-Manago
Co-ordinate expression of the two threonyl-tRNA synthetase genes in Bacillus subtilis: control by transcriptional antitermination involving a conserved regulatory sequence.
EMBO J: 1992, 11(8);3117-27
[PubMed:1379177] [WorldCat.org] [DOI] (P p)