YlnE

• Description: probably siroheme ferrochelatase
  
  

Gene name	ylnE
Synonyms
Essential	no
Product	probably siroheme ferrochelatase
Function	siroheme biosynthesis , sulfite reduction
Metabolic function and regulation of this protein in SubtiPathways: Cys, Met & Sulfate assimilation
MW, pI	28 kDa, 6.063
Gene length, protein length	783 bp, 261 aa
Immediate neighbours	ylnD, ylnF
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: BSU15620

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: Siroheme + 2 H⁺ = sirohydrochlorin + Fe²⁺ (according to Swiss-Prot)

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

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:

• Localization:

Database entries

• Structure:

• Swiss prot entry: O34632

• KEGG entry: [3]

• E.C. number:

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: