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- The inner membrane protein LapB is required for adaptation to cold stress in an LpxC-independent manner
- Han Byeol Lee , Si Hyoung Park , Chang-Ro Lee
- J. Microbiol. 2021;59(7):666-674. Published online May 15, 2021
- DOI: https://doi.org/10.1007/s12275-021-1130-8
- 48 View
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- 10 Web of Science
- 9 Crossref
-
Abstract
-
The inner membrane protein lipopolysaccharide assembly
protein B (LapB) is an adaptor protein that activates the proteolysis
of LpxC by an essential inner membrane metalloprotease,
FtsH, leading to a decrease in the level of lipopolysaccharide
in the membrane. In this study, we revealed the
mechanism by which the essential inner membrane protein
YejM regulates LapB and analyzed the role of the transmembrane
domain of LapB in Escherichia coli. The transmembrane
domain of YejM genetically and physically interacted with
LapB and inhibited its function, which led to the accumulation
of LpxC. The transmembrane domain of LapB was indispensable
for both its physical interaction with YejM and
its regulation of LpxC proteolysis. Notably, we found that the
lapB mutant exhibited strong cold sensitivity and this phenotype
was not associated with increased accumulation of LpxC.
The transmembrane domain of LapB was also required for
its role in adaptation to cold stress. Taken together, these
results
showed that LapB plays an important role in both the regulation of LpxC level, which is controlled by its interaction with the transmembrane domain of YejM, and adaptation to cold stress, which is independent of LpxC. -
Citations
Citations to this article as recorded by
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PhoPQ-mediated lipopolysaccharide modification governs intrinsic resistance to tetracycline and glycylcycline antibiotics in
Escherichia coli
Byoung Jun Choi, Umji Choi, Dae-Beom Ryu, Chang-Ro Lee, Mehrad Hamidian, You-Hee Cho
mSystems.2024;[Epub] CrossRef -
Lytic transglycosylase repertoire diversity enables intrinsic antibiotic resistance and daughter cell separation in
Escherichia coli
under acidic stress
Ji Eun Son, Si Hyoung Park, Umji Choi, Chang-Ro Lee, Laurent Poirel
Antimicrobial Agents and Chemotherapy.2024;[Epub] CrossRef - Trans-cinnamaldehyde inhibits Escherichia coli growth by regulating lipopolysaccharide accumulation
Huanling Xing, Xiaomin Liu, Jianhao Lin, Mingfei Sun, Junyi Huang, Xinghai Li, Yanqun Li, Shining Guo, Fang Zhou, Hong Wu
Food Bioscience.2024; 61: 104559. CrossRef - Coordinated and Distinct Roles of Peptidoglycan Carboxypeptidases DacC and DacA in Cell Growth and Shape Maintenance under Stress Conditions
Umji Choi, Si Hyoung Park, Han Byeol Lee, Ji Eun Son, Chang-Ro Lee, Cristina Solano
Microbiology Spectrum.2023;[Epub] CrossRef - NoiD, a DedA membrane protein required for homeostasis maintaining of Rhizobium leguminosarum biovar viciae during symbiosis with Pisum sativum
Xiaofang Li, Jiaming Xu, Yajuan Wei, Zirui Chen
Symbiosis.2022; 86(1): 81. CrossRef - Conserved Tandem Arginines for PbgA/YejM Allow Salmonella Typhimurium To Regulate LpxC and Control Lipopolysaccharide Biogenesis during Infection
Nicole P. Giordano, Joshua A. Mettlach, Zachary D. Dalebroux, Manuela Raffatellu
Infection and Immunity.2022;[Epub] CrossRef - Divergent Effects of Peptidoglycan Carboxypeptidase DacA on Intrinsic β-Lactam and Vancomycin Resistance
Si Hyoung Park, Umji Choi, Su-Hyun Ryu, Han Byeol Lee, Jin-Won Lee, Chang-Ro Lee, Krisztina M. Papp-Wallace
Microbiology Spectrum.2022;[Epub] CrossRef - Cryo-EM structure of transmembrane AAA+ protease FtsH in the ADP state
Wu Liu, Martien Schoonen, Tong Wang, Sean McSweeney, Qun Liu
Communications Biology.2022;[Epub] CrossRef - Checkpoints That Regulate Balanced Biosynthesis of Lipopolysaccharide and Its Essentiality in Escherichia coli
Gracjana Klein, Alicja Wieczorek, Martyna Szuster, Satish Raina
International Journal of Molecular Sciences.2021; 23(1): 189. CrossRef
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PhoPQ-mediated lipopolysaccharide modification governs intrinsic resistance to tetracycline and glycylcycline antibiotics in
Escherichia coli
- Autophagic elimination of Trypanosoma cruzi in the presence of metals
- Laís Pessanha de Carvalho , Edésio José Tenório de Melo
- J. Microbiol. 2019;57(10):918-926. Published online August 28, 2019
- DOI: https://doi.org/10.1007/s12275-019-9018-6
- 41 View
- 0 Download
- 3 Web of Science
- 3 Crossref
-
Abstract
- Trypanosoma cruzi is an obligate intracellular parasite transmitted to vertebrate hosts by blood-sucking insects. Molecules present in parasites and mammalian cells allow the recognition and parasite internalization. Metallic ions play an essential role in the establishment and maintenance of hostparasite interaction. However, little is known about how parasites handle with essential and nonessential metal quotas. This study aimed to investigate the influence of metal ions on the biological processes of T. cruzi infected cells. Infected cells were incubated with ZnCl2, CdCl2, and HgCl2 for 12 h and labeled with different specific dyes to investigate the cellular events related to intracellular parasite death and elimination. Infected host cells and parasite’s mitochondria underwent functional and structural disorders, in addition to parasite’s DNA condensation and pH decrease on host cells, which led to parasite death. Further investigations suggested that lysosomes were involved in pH decrease and the double membrane of the endoplasmic reticulum formed vacuoles surrounding damaged parasites, which indicate the occurrence of autophagy for parasite elimination. In conclusion, low concentrations of nonessential and essential metals cause a series of damage to Trypanosoma cruzi organelles, leading to its loss of viability, death, and elimination, with no removal of the host cells.
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Citations
Citations to this article as recorded by- The role of host autophagy in intracellular protozoan parasites diseases
Rafael Cardoso Maciel Costa Silva, Jhones Sousa Ribeiro, Thalita Santos de Moraes de Farias, Leonardo Holanda Travassos
Archives of Biochemistry and Biophysics.2024; 761: 110186. CrossRef - Personalized Prevention in Mercury-Induced Amyotrophic Lateral Sclerosis: A Case Report
Nicola Magnavita, Mario Sabatelli, Egeria Scoditti, Francesco Chirico
Applied Sciences.2020; 10(21): 7839. CrossRef - Essential and nonessential metal effects on extracellular Leishmania amazonensis in vitro
Laís Pessanha de Carvalho, Jana Held, Edésio José Tenório de Melo
Experimental Parasitology.2020; 209: 107826. CrossRef
- The role of host autophagy in intracellular protozoan parasites diseases
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