MifM

• Description: ribosome-nascent chain sensor of membrane protein biogenesis
  
  

Gene name	mifM
Synonyms	yqzJ
Essential	no
Product	sensor of SpoIIIJ activity
Function	control of yidC2 translation
Gene expression levels in SubtiExpress: mifM
Interactions involving this protein in SubtInteract: MifM
MW, pI	11 kDa, 5.829
Gene length, protein length	285 bp, 95 aa
Immediate neighbours	polY1, yidC2
Sequences	Protein DNA DNA_with_flanks
Genetic context This image was kindly provided by SubtiList
Expression at a glance   PubMed

Categories containing this gene/protein

translation, membrane proteins

The gene

Basic information

• Locus tag: BSU23880

Database entries

• BsubCyc: BSU23880

• DBTBS entry: no entry

• SubtiList entry: [1]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity: acts as a kind of "leader peptide" that does or does not allow translation through a hairpin structure in the yidC2 mRNA PubMed

• Protein family:

• Paralogous protein(s):

Extended information on the protein

• Kinetic information:

• Domains:
  • N-terminal transmembrane domain PubMed
  • the C-terminal domain interacts with the ribosome and arrests the own translation elongation PubMed

• Modification:

• Cofactor(s):

• Effectors of protein activity:

• Interactions:
  • the C-terminus of MifM interacts with the ribosomal polypeptide exit tunnel (RplD, RplV) PubMed
  • SpoIIIJ-MifM PubMed
  • RplD-MifM PubMed
  • RplV-MifM PubMed
  • 23S rRNA-MifM PubMed

• Localization:
  • membrane PubMed

Database entries

• BsubCyc: BSU23880

• Structure:

• UniProt: Q7WY64

• KEGG entry: [2]

• E.C. number:

Expression and regulation

• Operon: mifM-yidC2 PubMed

• Expression browser: mifM PubMed

• Sigma factor:

• Regulation:

• Regulatory mechanism:

• Additional information:
  • An antisense RNA is predicted for mifM PubMed
  • MifM has intrinsic sequences to arrest ribosome function, the arrest is influenced by the cotranslational engagement in the protein localization reaction PubMed
  • elongation proceeds when SpoIIIJ integrates the nascent chain of MifM into the membrane PubMed

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Daniel Sohmen, Shinobu Chiba, Naomi Shimokawa-Chiba, C Axel Innis, Otto Berninghausen, Roland Beckmann, Koreaki Ito, Daniel N Wilson
Structure of the Bacillus subtilis 70S ribosome reveals the basis for species-specific stalling.
Nat Commun: 2015, 6;6941
[PubMed:25903689] [WorldCat.org] [DOI] (I e)

Shinobu Chiba, Koreaki Ito
MifM monitors total YidC activities of Bacillus subtilis, including that of YidC2, the target of regulation.
J Bacteriol: 2015, 197(1);99-107
[PubMed:25313395] [WorldCat.org] [DOI] (I p)

Shinobu Chiba, Koreaki Ito
Multisite ribosomal stalling: a unique mode of regulatory nascent chain action revealed for MifM.
Mol Cell: 2012, 47(6);863-72
[PubMed:22864117] [WorldCat.org] [DOI] (I p)

Gene-Wei Li, Eugene Oh, Jonathan S Weissman
The anti-Shine-Dalgarno sequence drives translational pausing and codon choice in bacteria.
Nature: 2012, 484(7395);538-41
[PubMed:22456704] [WorldCat.org] [DOI] (I e)

Pierre Nicolas, Ulrike Mäder, Etienne Dervyn, Tatiana Rochat, Aurélie Leduc, Nathalie Pigeonneau, Elena Bidnenko, Elodie Marchadier, Mark Hoebeke, Stéphane Aymerich, Dörte Becher, Paola Bisicchia, Eric Botella, Olivier Delumeau, Geoff Doherty, Emma L Denham, Mark J Fogg, Vincent Fromion, Anne Goelzer, Annette Hansen, Elisabeth Härtig, Colin R Harwood, Georg Homuth, Hanne Jarmer, Matthieu Jules, Edda Klipp, Ludovic Le Chat, François Lecointe, Peter Lewis, Wolfram Liebermeister, Anika March, Ruben A T Mars, Priyanka Nannapaneni, David Noone, Susanne Pohl, Bernd Rinn, Frank Rügheimer, Praveen K Sappa, Franck Samson, Marc Schaffer, Benno Schwikowski, Leif Steil, Jörg Stülke, Thomas Wiegert, Kevin M Devine, Anthony J Wilkinson, Jan Maarten van Dijl, Michael Hecker, Uwe Völker, Philippe Bessières, Philippe Noirot
Condition-dependent transcriptome reveals high-level regulatory architecture in Bacillus subtilis.
Science: 2012, 335(6072);1103-6
[PubMed:22383849] [WorldCat.org] [DOI] (I p)

Shinobu Chiba, Takashi Kanamori, Takuya Ueda, Yoshinori Akiyama, Kit Pogliano, Koreaki Ito
Recruitment of a species-specific translational arrest module to monitor different cellular processes.
Proc Natl Acad Sci U S A: 2011, 108(15);6073-8
[PubMed:21383133] [WorldCat.org] [DOI] (I p)

Irnov Irnov, Cynthia M Sharma, Jörg Vogel, Wade C Winkler
Identification of regulatory RNAs in Bacillus subtilis.
Nucleic Acids Res: 2010, 38(19);6637-51
[PubMed:20525796] [WorldCat.org] [DOI] (I p)

Shinobu Chiba, Anne Lamsa, Kit Pogliano
A ribosome-nascent chain sensor of membrane protein biogenesis in Bacillus subtilis.
EMBO J: 2009, 28(22);3461-75
[PubMed:19779460] [WorldCat.org] [DOI] (I p)