A cortex-specific PBP contributes to cephalosporin resistance in Clostridium difficile
A cortex-specific PBP contributes to cephalosporin resistance in Clostridium difficile
复制标题
皮质特异性 PBP 导致艰难梭菌对头孢菌素耐药
DOI:
10.1101/715458
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Alabdali Y
中科院分区:
文献类型:
--
作者:
Alabdali Y
Sporulation is a complex cell differentiation programme shared by many members of the Firmicutes, the end result of which is a highly resistant, metabolically inert spore that can survive harsh environmental insults.Clostridium difficilespores are essential for transmission of disease and are also required for recurrent infection. However, the molecular basis of sporulation is poorly understood, despite parallels with the well-studiedBacillus subtilissystem. The spore envelope consists of multiple protective layers, one which is a specialised layer of peptidoglycan, called the cortex, that is essential for the resistant properties of the spore. We have identified and characterised a penicillin binding protein (PBP) that is required for cortex synthesis inC. difficile. Surprisingly this PBP was also found to contribute to cephalosporin resistance, indicating an additional role in the synthesis of vegetative cell wall. This is the first description of a cortex-specific PBP inC. difficileand begins the process of unravelling cortex biogenesis in this important pathogen.
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