PpiB

• Description: peptidyl-prolyl isomerase
  
  

Gene name	ppiB
Synonyms	cypBS
Essential	no
Product	peptidyl-prolyl isomerase
Function	protein folding
MW, pI	15 kDa, 5.472
Gene length, protein length	429 bp, 143 aa
Immediate neighbours	ypzD, ypuA
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: BSU23360

Database entries

• DBTBS entry: [1]

• SubtiList entry: [2]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: Peptidylproline (omega=180) = peptidylproline (omega=0) (according to Swiss-Prot)

• Protein family: cyclophilin-type PPIase family (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:

• UniProt: P35137

• KEGG entry: [3]

• E.C. number: 5.2.1.8

Expression and regulation

• Operon: ppiB PubMed

• Sigma factor: SigA PubMed

• Regulation:

• Regulatory mechanism:

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

S F Göthel, C Scholz, F X Schmid, M A Marahiel
Cyclophilin and trigger factor from Bacillus subtilis catalyze in vitro protein folding and are necessary for viability under starvation conditions.
Biochemistry: 1998, 37(38);13392-9
[PubMed:9748346] [WorldCat.org] [DOI] (P p)

T V Achenbach, S F Göthel, M A Marahiel
Histidine 109 in peptidyl-prolyl cis-trans isomerase of Bacillus subtilis plays an important role in catalysis and in cyclosporin A binding.
FEMS Microbiol Lett: 1997, 154(1);139-44
[PubMed:9297832] [WorldCat.org] [DOI] (P p)

S F Göthel, M Herrler, M A Marahiel
Peptidyl-prolyl cis-trans isomerase of Bacillus subtilis: identification of residues involved in cyclosporin A affinity and catalytic efficiency.
Biochemistry: 1996, 35(11);3636-40
[PubMed:8639516] [WorldCat.org] [DOI] (P p)

M Herrler, H Bang, M A Marahiel
Cloning and characterization of ppiB, a Bacillus subtilis gene which encodes a cyclosporin A-sensitive peptidyl-prolyl cis-trans isomerase.
Mol Microbiol: 1994, 11(6);1073-83
[PubMed:8022278] [WorldCat.org] [DOI] (P p)

M Herrler, H Bang, K Brune, G Fischer, M A Marahiel
Peptidyl-prolyl cis-trans isomerase from Bacillus subtilis. A prokaryotic enzyme that is highly sensitive to cyclosporin A.
FEBS Lett: 1992, 309(3);231-4
[PubMed:1516692] [WorldCat.org] [DOI] (P p)