MreBH

• Description: cell shape-determining protein, forms filaments, the polymers control/restrict the mobility of the cell wall elongation enzyme complex, , required for LytE activity
  
  

Gene name	mreBH
Synonyms
Essential	no
Product	cell shape-determining protein
Function	cell shape determation
Gene expression levels in SubtiExpress: mreBH
Interactions involving this protein in SubtInteract: MreBH
MW, pI	35 kDa, 5.239
Gene length, protein length	1005 bp, 335 aa
Immediate neighbours	ykpC, abh
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

cell shape, heat shock proteins, membrane proteins

This gene is a member of the following regulons

SigI regulon, WalR regulon

The gene

Basic information

• Locus tag: BSU14470

Database entries

• DBTBS entry: no entry

• SubtiList entry: [1]

The protein

Basic information/ Evolution

• Catalyzed reaction/ biological activity:
  • forms ring-shaped filaments in a heterologous system PubMed
  • required for the activity of LytE PubMed

• Protein family: ftsA/mreB family (according to Swiss-Prot)

• Paralogous protein(s): MreB, Mbl

Extended information on the protein

• Kinetic information:

• Domains:

• Modification:

• Cofactors:

• Effectors of protein activity:

• Interactions:
  • part of the cell wall biosynthetic complex PubMed
  • MreBH-LytE PubMed
  • MreBH-Mbl PubMed
  • MreB-MreBH PubMed
  • RodZ-MreBH PubMed

• Localization:
  • during logarithmic growth, MreBH forms discrete patches thst move processively along peripheral tracks perpendicular to the cell axis PubMed
  • forms transverse bands as cells enter the stationary phase PubMed
  • close to the inner surface of the cytoplasmic membrane PubMed
  • reports on helical structures formed by MreBH PubMed seem to be misinterpretation of data PubMed
  • normal localization depends on the presence of glucolipids, MreB forms irregular clusters in an ugtP mutant PubMed

Database entries

• Structure:

• UniProt: P39763

• KEGG entry: [2]

• E.C. number:

Expression and regulation

• Operon:

• Expression browser: mreBH PubMed

• Sigma factor: SigI PubMed

• Regulation:
  • expression is increased in an ugtP mutant PubMed
  • induced at high temperature (SigI, WalR) PubMed

• Regulatory mechanism:
  • WalR: transcription activation PubMed

• Additional information:

Biological materials

• Mutant:

• Expression vector:

• lacZ fusion:

• GFP fusion:

• two-hybrid system:

• Antibody:

References

Other original publications

Wan-Zhen Huang, Jyun-Jhih Wang, Hui-Ju Chen, Jung-Tze Chen, Gwo-Chyuan Shaw
The heat-inducible essential response regulator WalR positively regulates transcription of sigI, mreBH and lytE in Bacillus subtilis under heat stress.
Res Microbiol: 2013, 164(10);998-1008
[PubMed:24125693] [WorldCat.org] [DOI] (I p)

Katarína Muchová, Zuzana Chromiková, Imrich Barák
Control of Bacillus subtilis cell shape by RodZ.
Environ Microbiol: 2013, 15(12);3259-71
[PubMed:23879732] [WorldCat.org] [DOI] (I p)

Patricia Domínguez-Cuevas, Ida Porcelli, Richard A Daniel, Jeff Errington
Differentiated roles for MreB-actin isologues and autolytic enzymes in Bacillus subtilis morphogenesis.
Mol Microbiol: 2013, 89(6);1084-98
[PubMed:23869552] [WorldCat.org] [DOI] (I p)

Felix Dempwolff, Christian Reimold, Michael Reth, Peter L Graumann
Bacillus subtilis MreB orthologs self-organize into filamentous structures underneath the cell membrane in a heterologous cell system.
PLoS One: 2011, 6(11);e27035
[PubMed:22069484] [WorldCat.org] [DOI] (I p)

Hervé Joël Defeu Soufo, Peter L Graumann
Bacillus subtilis MreB paralogues have different filament architectures and lead to shape remodelling of a heterologous cell system.
Mol Microbiol: 2010, 78(5);1145-58
[PubMed:21091501] [WorldCat.org] [DOI] (I p)

Yoshikazu Kawai, Kei Asai, Jeffery Errington
Partial functional redundancy of MreB isoforms, MreB, Mbl and MreBH, in cell morphogenesis of Bacillus subtilis.
Mol Microbiol: 2009, 73(4);719-31
[PubMed:19659933] [WorldCat.org] [DOI] (I p)

Kathrin Schirner, Jeff Errington
Influence of heterologous MreB proteins on cell morphology of Bacillus subtilis.
Microbiology (Reading): 2009, 155(Pt 11);3611-3621
[PubMed:19643765] [WorldCat.org] [DOI] (I p)

Chi-Ling Tseng, Gwo-Chyuan Shaw
Genetic evidence for the actin homolog gene mreBH and the bacitracin resistance gene bcrC as targets of the alternative sigma factor SigI of Bacillus subtilis.
J Bacteriol: 2008, 190(5);1561-7
[PubMed:18156261] [WorldCat.org] [DOI] (I p)

Rut Carballido-López, Alex Formstone, Ying Li, S Dusko Ehrlich, Philippe Noirot, Jeff Errington
Actin homolog MreBH governs cell morphogenesis by localization of the cell wall hydrolase LytE.
Dev Cell: 2006, 11(3);399-409
[PubMed:16950129] [WorldCat.org] [DOI] (P p)