ClpP

• Description: ATP-dependent Clp protease proteolytic subunit (class III heat-shock protein)
  
  

Gene name	clpP
Synonyms	yvdN
Essential	no
Product	ATP-dependent Clp protease proteolytic subunit
Function	protein degradation
Metabolic function and regulation of this protein in SubtiPathways: Stress
MW, pI	21 kDa, 5.008
Gene length, protein length	591 bp, 197 aa
Immediate neighbours	trnQ-Arg, pgcM
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: BSU34540

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: Hydrolysis of proteins to small peptides in the presence of ATP and magnesium (according to Swiss-Prot) endopeptidase/proteolysis

• Protein family: peptidase S14 family (according to Swiss-Prot) ClpP (IPR001907) InterPro, (PF00574) PFAM

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions: ClpE-ClpP, ClpC-ClpP, ClpX-ClpP

• Localization: cytoplasm (according to Swiss-Prot), cytoplasmic polar clusters, excluded from the nucleoid, induced clustering upon heatshock, colocalization with ClpX, ClpC and ClpE Pubmed

Database entries

• Structure: Two homologue structures resolved 1TYF, 1Y7O, structural model of B. subtilis ClpP available from hstrahl

• UniProt: P80244

• KEGG entry: [3]

• E.C. number: 3.4.21.92

Expression and regulation

• Operon:

• Sigma factor: SigB PubMed

• Regulation: induced by stress (SigB) PubMed, induced by heat (CtsR) PubMed
  • repressed at low temperatures (CtsR) PubMed

• Regulatory mechanism: CtsR: transcription repression PubMed1, PubMed2, PubMed3, PubMed4
  • CtsR: transcription repression PubMed

• Additional information:

Biological materials

• Mutant:
  • clpP::spec and clpP::cat available , available in the Leendert Hamoen lab
  • GP551 (spc), available in the Stülke lab

• Expression vector:

• lacZ fusion:

• GFP fusion: C-terminal GFP fusions (both single copy and as 2th copy in amyE locus, also as CFP and YFP variants) available in the Leendert Hamoen lab

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

Leendert Hamoen, Newcastle University, UK homepage

References

Reviews

Janine Kirstein, Noël Molière, David A Dougan, Kürşad Turgay
Adapting the machine: adaptor proteins for Hsp100/Clp and AAA+ proteases.
Nat Rev Microbiol: 2009, 7(8);589-99
[PubMed:19609260] [WorldCat.org] [DOI] (I p)