mreD

mreD
168

MreD is a cell shape determining protein, it couples the cytosolic MreB and MreB-like proteins to the extracellular peptidoglycan-synthesizing machinery, part of the Rod complex for lateral cell wall synthesis and control of cell diameter

Locus
BSU_28010
Molecular weight
19.67 kDa
Isoelectric point
7.91
Protein length
Gene length
Function
cell shape determation
Product
cell shape-determining protein
Essential
yes
Synonyms
mreD, rodB

Genomic Context

Categories containing this gene/protein

List of homologs in different organisms, belongs to COG2891 (Galperin et al., 2021)

This gene is a member of the following regulons

Gene
Coordinates
2,859,317  2,859,835
Phenotypes of a mutant
the phenotype of mreD is similar to that of ''mreC
mreD is essential under normal conditions PubMed
Depletion of MreD leads to a progressive increase in the width and a decrease in the length of the cell and cells become lytic. In the depletion strain, lysis can be prevented and cell growth, but not cell shape, can be recovered by inculaion of Magnesium in the media.  This shape defect is consistent with a role for mreD in cell wall synthesis during elongation and has a similar phenotype to other genes with roles in elongation.
The protein
Catalyzed reaction/ biological activity
None/ structural
Protein family
mreD family (single member, according to UniProt)
Structure
trans-membrane protein PubMed
during logarithmic growth, MreD forms discrete patches that move processively along peripheral tracks perpendicular to the cell axis PubMed
forms transverse bands as cells enter the stationary phase PubMed
reports on helical structures formed by MreD PubMed seem to be misinterpretation of data PubMed
Expression and Regulation
Operons
Description
Regulation
constitutively expressed PubMed
Regulatory mechanism
ComK: activation, PubMed, in comK regulon
Sigma factors
SigA: sigma factor, promoter p1, upstream of Maf PubMed, in sigA regulon
SigM: sigma factor, promoter p2, within Maf PubMed, in sigM regulon
SigH: sigma factor, promoter p4, upstream of MinC PubMed, in sigH regulon
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mreBminD

2025-04-06 06:20:06

ghost

153

df866addcf0a1b269336e8d5bd5fbd5f95fab5a3

37AF85C74BFE779D7BD018F30628D4588CACE9D3

Description
Regulation
constitutively expressed PubMed
Regulatory mechanism
ComK: activation, PubMed, in comK regulon
Sigma factors
SigM: sigma factor, promoter p2 within Maf PubMed, in sigM regulon
SigA: sigma factor, promoter p1, upstream of Maf PubMed, in sigA regulon
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mafminD

2025-04-06 10:22:29

ghost

140

5cb36570cb9eb74ac55107ce2bd7f07e7d2d5c0b

EE31E7A5D1B0C8BDC56B004AA68A1C721D4DA9CC

Biological materials
Mutant
A conditional mutant with an inframe deletion of mreD complemented by a xylose inducible copy at an ectopic locus (strain named 4352) is avaliable from the Errington Group.
GFP fusion
A functional N-terminal GFP fusion has been made where the fusion protein is the only copy of the gene in the cell: strain 3416 PubMed.
Labs working on this gene/protein
Peter Graumann, Freiburg University, Germany homepage
References
Reviews
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Original Publications
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Localization
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231C30963AFB863424C087CB722446D319976D65

Page visits: 4789

Time of last update: 2025-04-06 03:16:13

Author of last update: Jstuelk