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The multicellular morphotypes of Salmonella typhimurium and Escherichia coli produce cellulose as the second component of the extracellular matrix.
Production of cellulose has been thought to be restricted to a few bacterial species such as the model organism Acetobacter xylinus. We show by enzymatic analysis and mass spectrometry that, besidesExpand
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GGDEF and EAL domains inversely regulate cyclic di-GMP levels and transition from sessility to motility.
Cyclic nucleotides represent second messenger molecules in all kingdoms of life. In bacteria, mass sequencing of genomes detected the highly abundant protein domains GGDEF and EAL. We show here thatExpand
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Production of Cellulose and Curli Fimbriae by Members of the Family Enterobacteriaceae Isolated from the Human Gastrointestinal Tract
ABSTRACT Citrobacter spp., Enterobacter spp., and Klebsiella spp. isolated from the human gut were investigated for the biosynthesis of cellulose and curli fimbriae (csg). While Citrobacter spp.Expand
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Internal Architecture of Mitochondrial Complex I from Arabidopsis thaliana
The NADH dehydrogenase complex (complex I) represents the largest functional module of the respiratory chain and at the same time is the least known. Based on a novel biochemical strategy, a model onExpand
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The MprF protein is required for lysinylation of phospholipids in listerial membranes and confers resistance to cationic antimicrobial peptides (CAMPs) on Listeria monocytogenes.
Pathogenic bacteria have to cope with defence mechanisms mediated by adaptive and innate immunity of the host cells. Cationic antimicrobial peptides (CAMPs) represent one of the most effectiveExpand
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The Pseudomonas aeruginosa quinolone signal (PQS) has an iron-chelating activity.
Virulence factor production and the development of biofilms in Pseudomonas aeruginosa have been shown to be regulated by two hierarchically organized quorum-sensing systems activated by two types ofExpand
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The sulfurtransferase activity of Uba4 presents a link between ubiquitin-like protein conjugation and activation of sulfur carrier proteins.
Because of mechanistic parallels in the activation of ubiquitin and the biosynthesis of several sulfur-containing cofactors, we have characterized the human Urm1 and Saccharomyces cerevisiae Uba4Expand
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Occurrence and regulation of the multicellular morphotype in Salmonella serovars important in human disease.
Multicellular behavior in Salmonella Typhimurium ATCC14028 called the rdar morphotype is characterized by the expression of the extracellular matrix components cellulose and curli fimbriae. Over 90%Expand
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Adaptation of Pseudomonas aeruginosa to various conditions includes tRNA-dependent formation of alanyl-phosphatidylglycerol.
The opportunistic bacterium Pseudomonas aeruginosa synthesizes significant amounts of an additional phospholipid, identified as 2' alanyl-phosphatidylglycerol (A-PG), when exposed to acidic growthExpand
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Formation and analysis of mannosylerythritol lipids secreted by Pseudozyma aphidis
Pseudozyma aphidis DSM 70725 was found to be a novel producer of mannosylerythritol lipids (MELs). The MELs were quantified by HPLC. Glucose as carbon source for precultivation supported growth well.Expand
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