This study investigates the Salmonella effector protein SopA. We show that in Salmonella enterica serovar Dublin-infected cells, SopA(1-347) fused to two carboxy-terminal hemagglutinin tags partially colocalized with mitochondria. Transfection of eukaryotic cells with a panel of constructs encoding truncated versions of SopA identified that amino acids 100 to 347 were sufficient to target SopA to the mitochondria.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1112013 | PMC |
http://dx.doi.org/10.1128/JB.187.10.3565-3571.2005 | DOI Listing |
Cells
December 2024
Molecular and Cellular Microbiology Laboratory, Department of Biological Sciences, Old Dominion University, Norfolk, VA 23529, USA.
Within mammalian cells, diverse endocytic mechanisms, including phagocytosis, pinocytosis, and receptor-mediated endocytosis, serve as gateways exploited by many bacterial pathogens and toxins. Among these, caveolae-mediated endocytosis is characterized by lipid-rich caveolae and dimeric caveolin proteins. Caveolae are specialized microdomains on cell surfaces that impact cell signaling.
View Article and Find Full Text PDFFront Microbiol
December 2024
Núcleo de Investigación en One Health, Facultad de Medicina Veterinaria y Agronomía, Universidad de Las Américas, Santiago, Chile.
Type VI Secretion Systems (T6SS), widely distributed in Gram-negative bacteria, contribute to interbacterial competition and pathogenesis through the translocation of effector proteins to target cells. harbor 5 pathogenicity islands encoding T6SS (SPI-6, SPI-19, SPI-20, SPI-21 and SPI-22), in which a limited number of effector proteins have been identified. Previous analyses by our group focused on the identification of candidate T6SS effectors and cognate immunity proteins in genomes deposited in public databases.
View Article and Find Full Text PDFMicrob Pathog
December 2024
Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, Food Research Center, University of São Paulo, Brazil.
Salmonella enterica subsp. enterica serovar Havana is a potential pathogenic serotype that can cause human foodborne illness. Therefore, we have conducted a microbiological and genomic surveillance study of Salmonella Havana from food in Brazil.
View Article and Find Full Text PDFbioRxiv
December 2024
Institute of Microbiology, ETH Zurich, Zurich, Switzerland.
enterica spp. rely on translocation of effector proteins through the SPI-2 encoded type III secretion system (T3SS) to achieve pathogenesis. More than 30 effectors contribute to manipulation of host cells through diverse mechanisms, but interdependency or redundancy between effectors complicates the discovery of effector phenotypes using single mutant strains.
View Article and Find Full Text PDFEMBO Rep
December 2024
Pharmacology Division, CSIR-Central Drug Research Institute, Lucknow, India.
Salmonella enterica serotype Typhimurium (Salmonella) resides and multiplies intracellularly in cholesterol-rich compartments called Salmonella-containing vacuoles (SCVs) with actin-rich tubular extensions known as Salmonella-induced filaments (SIFs). SCV maturation depends on host-derived cholesterol, but the transport mechanism of low-density lipoprotein (LDL)-derived cholesterol to SCVs remains unclear. Here we find that peroxisomes are recruited to SCVs and function as pro-bacterial organelle.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!