Archives of Microbiology

, 192:57 | Cite as

The putative Bacillus subtilis l,d-transpeptidase YciB is a lipoprotein that localizes to the cell poles in a divisome-dependent manner

Original Paper


Cell wall synthesis in bacteria is spatially organized by cytoskeletal structures. Common to all cell wall-bearing bacteria, the cytokinetic machinery localizes the cell wall synthesis to the site of septation. Recently, MinJ, a new component of the cytokinetic machinery, or divisome, of Bacillus subtilis has been described. MinJ is part of the division site selection system but also essential for correct assembly of the divisome. Here, I used the isolated PDZ domain of MinJ for co-elution experiments. One of the proteins that co-eluted was the so far uncharacterized, putative l,d-transpeptidase protein YciB. Evidence is shown that YciB localizes to the cell poles. YciB localization depends on the existence of a mature divisome, suggesting that l,d-transpeptidases are, like penicillin-binding proteins, part of the divisome.


l,d-transpeptidase YciB Cell division Protein localization Peptidoglycan synthesis Lipoprotein 



Bovine serum albumin




Ethylenediaminetetraacetic acid


Fluorescein isothiocyanate


Green fluorescent protein


Isopropyl β-d-1-thiogalactopyranoside




Minimum inhibitory concentration


Polyacrylamide gel electrophoresis


Penicillin-binding protein


Phosphate-buffered saline




Peptide-mass fingerprinting


Sodium dodecyl sulfate



I thank Anja Wittmann for the excellent technical support and Frank Bürmann for the kind gift of purified GFP-His. I thank Catriona Donovan for critical reading of the manuscript. Dr. Reinhard Krämer is acknowledged for his generous support, and funding by the Deutsche Forschungsgemeinschaft (DFG, SFB 635) is acknowledged.


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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  1. 1.Institute for BiochemistryUniversity of CologneCologneGermany

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