HisI

• Description: phosphoribosyl-AMP cyclohydrolase / phosphoribosyl-ATP pyrophosphohydrolase
  
  

Gene name	hisI
Synonyms	hisIE
Essential	no
Product	phosphoribosyl-AMP cyclohydrolase / phosphoribosyl-ATP pyrophosphohydrolase
Function	biosynthesis of histidine
Metabolic function and regulation of this protein in SubtiPathways: His
MW, pI	23 kDa, 4.627
Gene length, protein length	627 bp, 209 aa
Immediate neighbours	yvcA, hisF
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

Categories containing this gene/protein

biosynthesis/ acquisition of amino acids

The gene

Basic information

• Locus tag: BSU34860

Database entries

• DBTBS entry: no entry

• SubtiList entry: [1]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: 1-(5-phosphoribosyl)-ATP + H₂O = 1-(5-phosphoribosyl)-AMP + diphosphate (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:
  • cytoplasm (according to Swiss-Prot)

Database entries

• Structure:

• UniProt: O34912

• KEGG entry: [2]

• E.C. number: 3.5.4.19

Expression and regulation

• Operon: hisZ-hisG-hisD-hisB-hisH-hisA-hisF-hisI PubMed

• Sigma factor:

• Regulation: repressed by casamino acids PubMed

• Regulatory mechanism:

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody: