10.6084/m9.figshare.3823728.v1
Xia Wang
Xia
Wang
Feng Jiang
Feng
Jiang
Jianhua Zheng
Jianhua
Zheng
Lihong Chen
Lihong
Chen
Jie Dong
Jie
Dong
Lilian Sun
Lilian
Sun
Yafang Zhu
Yafang
Zhu
Bo Liu
Bo
Liu
Jian Yang
Jian
Yang
Guowei Yang
Guowei
Yang
Qi Jin
Qi
Jin
Table S3. OM profile of WT and ΔpldA strains from The outer membrane phospholipase A is essential for membrane integrity and type III secretion in <i>Shigella flexneri</i>
The Royal Society
2016
Shigella flexneri
phospholipase A
cell membranes
host cell invasion
2016-09-13 07:42:04
Dataset
https://rs.figshare.com/articles/dataset/Table_S3_OM_profile_of_WT_and_pldA_strains_from_The_outer_membrane_phospholipase_A_is_essential_for_membrane_integrity_and_type_III_secretion_in_i_Shigella_flexneri_i_/3823728
Outer membrane phospholipase A (OMPLA) is an enzyme located in the outer membrane of Gram-negative bacteria. OMPLA exhibits broad substrate specificity, and some of its substrates are located in the cellular envelope. Generally, the enzymatic activity can only be induced by perturbation of the cell envelope integrity through diverse methods. Although OMPLA has been thoroughly studied as a membrane protein in <i>Escherichia coli</i> and is constitutively expressed in many other bacterial pathogens, little is known regarding the functions of OMPLA during the process of bacterial infection. In this study, the proteomic and transcriptomic data indicated that OMPLA in <i>Shigella flexneri</i>, termed PldA, both stabilizes the bacterial membrane and is involved in bacterial infection under ordinary culture conditions. A series of physiological assays substantiated the disorganization of the bacterial outer membrane and the periplasmic space in the <i>ΔpldA</i> mutant strain. Furthermore, the <i>ΔpldA</i> mutant strain showed decreased levels of type III secretion system expression, contributing to the reduced internalization efficiency in host cells. The results of this study support PldA, which is widespread across Gram-negative bacteria, as an important factor for the bacterial life cycle, particularly in human pathogens.