SmpB

• Description: tmRNA-binding protein
  
  

Gene name	smpB
Synonyms	yvaI
Essential	no
Product	tmRNA-binding protein
Function	trans-translation
MW, pI	17 kDa, 10.421
Gene length, protein length	468 bp, 156 aa
Immediate neighbours	ssrA, rnr
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: BSU33600

Database entries

• DBTBS entry: no entry

• SubtiList entry: [1]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:

• Protein family: smpB 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: cytoplasm (according to Swiss-Prot)

Database entries

• Structure:

• Swiss prot entry: O32230

• KEGG entry: [2]

• E.C. number:

Expression and regulation

• Operon:

• Sigma factor:

• Regulation:

• Regulatory mechanism:

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

Labs working on this gene/protein

• Chet Price, Davis, USA homepage

References

Hiromi Ujiie, Tomoko Matsutani, Hisashi Tomatsu, Ai Fujihara, Chisato Ushida, Yasuhiko Miwa, Yasutaro Fujita, Hyouta Himeno, Akira Muto
Trans-translation is involved in the CcpA-dependent tagging and degradation of TreP in Bacillus subtilis.
J Biochem: 2009, 145(1);59-66
[PubMed:18977770] [WorldCat.org] [DOI] (I p)

Ji-Hyun Shin, Chester W Price
The SsrA-SmpB ribosome rescue system is important for growth of Bacillus subtilis at low and high temperatures.
J Bacteriol: 2007, 189(10);3729-37
[PubMed:17369301] [WorldCat.org] [DOI] (P p)

Jeffrey H Withey, David I Friedman
A salvage pathway for protein structures: tmRNA and trans-translation.
Annu Rev Microbiol: 2003, 57;101-23
[PubMed:12730326] [WorldCat.org] [DOI] (P p)

T Wiegert, W Schumann
SsrA-mediated tagging in Bacillus subtilis.
J Bacteriol: 2001, 183(13);3885-9
[PubMed:11395451] [WorldCat.org] [DOI] (P p)

A W Karzai, E D Roche, R T Sauer
The SsrA-SmpB system for protein tagging, directed degradation and ribosome rescue.
Nat Struct Biol: 2000, 7(6);449-55
[PubMed:10881189] [WorldCat.org] [DOI] (P p)