Control of septum thickness by the curvature of SepF polymers.
Bacillus subtilis
FtsZ
SepF
cell division
Journal
Proceedings of the National Academy of Sciences of the United States of America
ISSN: 1091-6490
Titre abrégé: Proc Natl Acad Sci U S A
Pays: United States
ID NLM: 7505876
Informations de publication
Date de publication:
12 01 2021
12 01 2021
Historique:
entrez:
14
1
2021
pubmed:
15
1
2021
medline:
8
5
2021
Statut:
ppublish
Résumé
Gram-positive bacteria divide by forming a thick cross wall. How the thickness of this septal wall is controlled is unknown. In this type of bacteria, the key cell division protein FtsZ is anchored to the cell membrane by two proteins, FtsA and/or SepF. We have isolated SepF homologs from different bacterial species and found that they all polymerize into large protein rings with diameters varying from 19 to 44 nm. Interestingly, these values correlated well with the thickness of their septa. To test whether ring diameter determines septal thickness, we tried to construct different SepF chimeras with the purpose to manipulate the diameter of the SepF protein ring. This was indeed possible and confirmed that the conserved core domain of SepF regulates ring diameter. Importantly, when SepF chimeras with different diameters were expressed in the bacterial host
Identifiants
pubmed: 33443155
pii: 2002635118
doi: 10.1073/pnas.2002635118
pmc: PMC7812789
pii:
doi:
Substances chimiques
Bacterial Proteins
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Déclaration de conflit d'intérêts
The authors declare no competing interest.
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