CysH

• Description: phosphoadenosine phosphosulfate sulfotransferase
  
  

Gene name	cysH
Synonyms
Essential	no
Product	phosphoadenosine phosphosulfate sulfotransferase
Function	sulfate reduction
Metabolic function and regulation of this protein in SubtiPathways: Cys, Met & Sulfate assimilation
MW, pI	26 kDa, 5.462
Gene length, protein length	699 bp, 233 aa
Immediate neighbours	pyrE, cysP
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

The gene

Basic information

• Locus tag: BSU15570

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: Adenosine 3',5'-bisphosphate + sulfite + thioredoxin disulfide = 3'-phosphoadenylyl sulfate + thioredoxin (according to Swiss-Prot)

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

• Paralogous protein(s): YitB

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:

• Swiss prot entry: P94498

• KEGG entry: [3]

• E.C. number: 1.8.4.8

Expression and regulation

• Operon: cysH-cysP-sat-cysC-ylnD-ylnE-ylnF

• Sigma factor: SigA

• Regulation:
  • repressed by casamino acids PubMed
  • repressed in the presence of cysteine (CymR)
  • induced by methionine starvation (S-box) PubMed

• Regulatory mechanism:
  • S-box: transcription termination/ antitermination, the S-box riboswitch binds S-adenosylmethionine resulting in termination PubMed
  • CymR: transcription repression

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

Isabelle Martin-Verstraete, Institute Pasteur, Paris, France