TyrA

• Description: prephenate dehydrogenase
  
  

Gene name	tyrA
Synonyms
Essential	no
Product	prephenate dehydrogenase
Function	biosynthesis of tyrosine
Gene expression levels in SubtiExpress: tyrA
Metabolic function and regulation of this protein in SubtiPathways: Phe, Tyr, Trp
MW, pI	41 kDa, 5.471
Gene length, protein length	1113 bp, 371 aa
Immediate neighbours	aroE, hisC
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

biosynthesis/ acquisition of amino acids

This gene is a member of the following regulons

TRAP regulon

The gene

Basic information

• Locus tag: BSU22610

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: Prephenate + NAD⁺ = 4-hydroxyphenylpyruvate + CO₂ + NADH (according to Swiss-Prot)

• Protein family: HisMQ subfamily (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity: subject to feedback inhibtion by tyrosine PubMed

• Interactions:

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

Database entries

• Structure:

• UniProt: P20692

• KEGG entry: [3]

• E.C. number: 1.3.1.12

Expression and regulation

• Operon:
  • aroF-aroB-aroH-trpE-trpD-trpC-trpF-trpB-trpA-hisC-tyrA-aroE (according to DBTBS)
  • trpE-trpD-trpC-trpF-trpB-trpA-hisC-tyrA-aroE PubMed
  • hisC-tyrA-aroE (according to DBTBS)

• Expression browser: tyrA PubMed

• Sigma factor:
  • trpE: SigA PubMed

• Regulation:
  • induction by tryptophan (TRAP) PubMed

• Regulatory mechanism:
  • TRAP: binding to the mRNA in the presence of tryptophan, this results in transcription termination PubMed

• Additional information:
  • the mRNA is substantially stabilized upon depletion of RNase Y PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody: