SdhC

• Description: succinate dehydrogenase (cytochrome b558 subunit)
  
  

Gene name	sdhC
Synonyms
Essential	no
Product	succinate dehydrogenase (cytochrome b558 subunit)
Function	TCA cycle
Metabolic function and regulation of this protein in SubtiPathways: Central C-metabolism
MW, pI	22 kDa, 9.831
Gene length, protein length	606 bp, 202 aa
Immediate neighbours	sdhA, yslB
Get the DNA and protein sequences (Barbe et al., 2009)
Genetic context This image was kindly provided by SubtiList

Categories containing this gene/protein

carbon core metabolism, membrane proteins

This gene is a member of the following regulons

FsrA regulon

The gene

Basic information

• Locus tag: BSU28450

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: cytochrome b558 family (according to Swiss-Prot)

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:
• Cofactor(s): Fe

• Effectors of protein activity:
  • Inhibited by 2-(n-Heptyl)-4-hydroxy-quinoline N-oxide PubMed
  • Activated by Cytochrome b558 PubMed

• Interactions: SdhB-SdhC (as part of the SdhC-SdhB-SdhA complex)

• Localization: membrane protein PubMed

Database entries

• Structure: 1NEK (E. coli)

• UniProt: P08064

• KEGG entry: [3]

• E.C. number: 1.3.99.1

Additional information

• This enzyme is a trimer membrane-bound PubMed PubMed
  • One subunit is bound to citochrome b558, and this subunit is the one bound to the cytosolic side of the membrane PubMed PubMed
  • Another subunit is the flavoprotein one, required for FAD usage PubMed PubMed
  • The other subunit has an iron-sulphur domain necessary for the catalytic activity PubMed PubMed
• extensive information on the structure and enzymatic properties of succinate dehydrogenase can be found at Proteopedia

Expression and regulation

• Operon: sdhC-sdhA-sdhB PubMed

• Sigma factor: SigA PubMed

• Regulation: SdhC is less expressed under conditions of extreme iron starvation (FsrA) PubMed

• Regulatory mechanism: FsrA: translational repression, sRNA PubMed

• Additional information:

Biological materials

• Mutant: GP743 (sdhCA, cat), available in Stülke lab

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system: B. pertussis adenylate cyclase-based bacterial two hybrid system (BACTH), available in Stülke lab

• Antibody: