Cell Biology of the Entry of Bdellovibrio and Like Organisms
... suggested the plug originated from the flagellar end of the predator. It appears that upon invasion, Bd. bacteriovorus sheds the flagellum, which helps to seal the entry pore. Analysis of PilT1 and PilT2 mutants of Bd. bacteriovorus showed that retraction of type IV pili was not required for invasio ...
... suggested the plug originated from the flagellar end of the predator. It appears that upon invasion, Bd. bacteriovorus sheds the flagellum, which helps to seal the entry pore. Analysis of PilT1 and PilT2 mutants of Bd. bacteriovorus showed that retraction of type IV pili was not required for invasio ...
______________________________________________________________________ Análisis de la composición del regulón LexA en el dominio Resumen
... sulfurreducens the recA gene, in addition to not having the LexA motif and not being united to this protein, forehead to the damage in the DNA presented a constituent expression. On the contrary, the recA gene of F. nucleatum is induced by injuries in the DNA although it is not regulated directly by ...
... sulfurreducens the recA gene, in addition to not having the LexA motif and not being united to this protein, forehead to the damage in the DNA presented a constituent expression. On the contrary, the recA gene of F. nucleatum is induced by injuries in the DNA although it is not regulated directly by ...
PROFILES OF TETRACYCLINE RESISTANT BACTERIA IN THE
... small percentage in microbial population and they are not a significant source for horizontal transmission of AR. However, data from recent studies illustrated that commensal bacteria in ready-to-eat foods may be a much more important avenue in transmitting AR to the general public through the food ...
... small percentage in microbial population and they are not a significant source for horizontal transmission of AR. However, data from recent studies illustrated that commensal bacteria in ready-to-eat foods may be a much more important avenue in transmitting AR to the general public through the food ...
Microspectrometric insights on the uptake of antibiotics
... concentration inside the bacterium is a pivotal step for most antibacterials. Spectrometric methodology has been developed to detect drugs inside bacteria and recent studies have focused on bacterial cell imaging. Ultimately, we seek to use this method to identify pharmacophoric groups which improve ...
... concentration inside the bacterium is a pivotal step for most antibacterials. Spectrometric methodology has been developed to detect drugs inside bacteria and recent studies have focused on bacterial cell imaging. Ultimately, we seek to use this method to identify pharmacophoric groups which improve ...
Bacteria & Viruses
... A nonliving strand of genetic material within a protein coat No organelles to take in nutrients or use energy Cannot make proteins Cannot move Cannot replicate on their own Most viruses range in size from 5 to 300 nanometers. ...
... A nonliving strand of genetic material within a protein coat No organelles to take in nutrients or use energy Cannot make proteins Cannot move Cannot replicate on their own Most viruses range in size from 5 to 300 nanometers. ...
The Microbiology of Bad Breath and Periodontitis
... • PCR assays were used for detection of P.gingivalis ...
... • PCR assays were used for detection of P.gingivalis ...
2. Equine Periodontal Anatomy
... Lactobacilli, Streptococci and Enterococci ferment plant material by anaerobically metabolising ...
... Lactobacilli, Streptococci and Enterococci ferment plant material by anaerobically metabolising ...
Bacteriophage One-step Growth Curve A bacteriophage is a virus
... infected with at least one phage. In fact, there will be about 10 phage for every bacterium. This ratio is referred to as the multiplicity of infection (MOI), so the MOI will be about 10. The mixture will be allowed to stand for a couple of minutes, then the bacteria will be centrifuged, leaving an ...
... infected with at least one phage. In fact, there will be about 10 phage for every bacterium. This ratio is referred to as the multiplicity of infection (MOI), so the MOI will be about 10. The mixture will be allowed to stand for a couple of minutes, then the bacteria will be centrifuged, leaving an ...
ABSTRACT Title of Document:
... humans. Typically, E. coli colonizes the gastrointestinal tract of human neonates within few hours after birth. Commensal E. coli usually persist in mucous layer of the mammalian colon where they colonize and thrive making it one of the most abundant facultative anaerobe in the microflora. Commensa ...
... humans. Typically, E. coli colonizes the gastrointestinal tract of human neonates within few hours after birth. Commensal E. coli usually persist in mucous layer of the mammalian colon where they colonize and thrive making it one of the most abundant facultative anaerobe in the microflora. Commensa ...
Applied and Environmental Microbiology 60
... The root-to-root travel of the beneficial bacterium Azospirillum brasilense on wheat and soybean roots in agar, sand, and light-textured soil was monitored. We used a motile wild-type (Mot+ ) strain and a motility-deficient (Mot-) strain which was derived from the wild-type strain. The colonization ...
... The root-to-root travel of the beneficial bacterium Azospirillum brasilense on wheat and soybean roots in agar, sand, and light-textured soil was monitored. We used a motile wild-type (Mot+ ) strain and a motility-deficient (Mot-) strain which was derived from the wild-type strain. The colonization ...
Principles of Antibiotic Policies - International Federation of Infection
... • Emergence of resistance – reduced effectiveness, increased toxicity, increased costs • To preserve susceptibility – or to postpone development of resistance – antibiotics should be used rationally ...
... • Emergence of resistance – reduced effectiveness, increased toxicity, increased costs • To preserve susceptibility – or to postpone development of resistance – antibiotics should be used rationally ...
Phage Isolation and Investigation
... Phage #3 is also useful for reconstructing mutants. This means that a test is performed to see if a particular transposon insertion in the mutant bacterium is the true cause of the observed phenotype. Transposon insertions are convenient in that they contain antibiotic resistance markers. For exampl ...
... Phage #3 is also useful for reconstructing mutants. This means that a test is performed to see if a particular transposon insertion in the mutant bacterium is the true cause of the observed phenotype. Transposon insertions are convenient in that they contain antibiotic resistance markers. For exampl ...
Glencoe Biology - Mr. Jones Jaguars
... Disease-causing Bacteria A small percentage of bacteria cause disease. Bacteria multiply quickly at the site of infection. Bacteria secrete a toxins Endotoxins- released when the bacteria dies ...
... Disease-causing Bacteria A small percentage of bacteria cause disease. Bacteria multiply quickly at the site of infection. Bacteria secrete a toxins Endotoxins- released when the bacteria dies ...
Comparison of Polysaccharides Produced by
... medium, up to 3 days' incubation also produced vegetative bacteria only. Prolonged incubation led to the accumulation of material on the sides of the flasks at the air-liquid interface. Examination of the deposits by the indian ink technique indicated that they contained a gelatinous matrix in which ...
... medium, up to 3 days' incubation also produced vegetative bacteria only. Prolonged incubation led to the accumulation of material on the sides of the flasks at the air-liquid interface. Examination of the deposits by the indian ink technique indicated that they contained a gelatinous matrix in which ...
Probiotics and Antibiotics - Should they be Given Together? - Bio-Kult
... controlled trials (RCTs) of probiotics in children taking antibiotics. The probiotics were co-administered with the antibiotics, and the review examined whether the probiotics prevented the development of AAD. Ten RCTs were identified, involving a total of 1,986 children. Six of the ten RCTs used la ...
... controlled trials (RCTs) of probiotics in children taking antibiotics. The probiotics were co-administered with the antibiotics, and the review examined whether the probiotics prevented the development of AAD. Ten RCTs were identified, involving a total of 1,986 children. Six of the ten RCTs used la ...
Two faces of the prokaryote concept
... adaptive characters (those that were most closely related to the habits of the organisms) were the least useful because they would be relatively recent developments particular to the species or variety. Constructing phylogenetic trees required highly conserved ancient traits, ones that were far ...
... adaptive characters (those that were most closely related to the habits of the organisms) were the least useful because they would be relatively recent developments particular to the species or variety. Constructing phylogenetic trees required highly conserved ancient traits, ones that were far ...
Multiple bacteria in aortic aneurysms
... aneurysm walls and inside intravascular plaque at the walls. These bacteria cannot be considered culture contaminants. Cell division indicated they were multiplying actively, and the presence of capsule suggested they might be more or less resistant to phagocytosis. Little agreement was found betwee ...
... aneurysm walls and inside intravascular plaque at the walls. These bacteria cannot be considered culture contaminants. Cell division indicated they were multiplying actively, and the presence of capsule suggested they might be more or less resistant to phagocytosis. Little agreement was found betwee ...
05 Keim
... Compartmentalization, a feature of prokaryotes, is achieved not only by membranes [13]. Instead, the formation of granules enables the cell to effectively separate some substances without the need for a limiting membrane, if the substances to be compartmentalized have a high affinity for one or more ...
... Compartmentalization, a feature of prokaryotes, is achieved not only by membranes [13]. Instead, the formation of granules enables the cell to effectively separate some substances without the need for a limiting membrane, if the substances to be compartmentalized have a high affinity for one or more ...
Applied Microbiology and Biotechnology 93
... can also be within the solid matrix of the polymeric bead. In some cases, the microbial cells are on the surface or partially within and partially outside of the gel matrix. From contraction of the alginate bead during formation and curing, close to its surface, the number of microorganisms is highe ...
... can also be within the solid matrix of the polymeric bead. In some cases, the microbial cells are on the surface or partially within and partially outside of the gel matrix. From contraction of the alginate bead during formation and curing, close to its surface, the number of microorganisms is highe ...
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... effects of an aqueous extract of garlic and its active constituent allicin were tested against 40 drug resistant isolates of the strains of Shigella dysenteries type 1 and Shigella flexneri, enterotoxigenic Escherichia coli and Vibrio cholerae. The aqueous garlic extract and allicin had potential ac ...
... effects of an aqueous extract of garlic and its active constituent allicin were tested against 40 drug resistant isolates of the strains of Shigella dysenteries type 1 and Shigella flexneri, enterotoxigenic Escherichia coli and Vibrio cholerae. The aqueous garlic extract and allicin had potential ac ...
IOSR Journal of Pharmacy and Biological Sciences (IOSR-JPBS)
... prevalent nosocomial pathogens associated with higher mortality rates and antibiotic costs. It can survive in different environments, including soil, plants and animals. It is also considered the most opportunistic human pathogen especially in immunocompromised patients and one of the top five patho ...
... prevalent nosocomial pathogens associated with higher mortality rates and antibiotic costs. It can survive in different environments, including soil, plants and animals. It is also considered the most opportunistic human pathogen especially in immunocompromised patients and one of the top five patho ...
Acyl-Homoserine Lactone Quorum Sensing: From Evolution to
... Although bacteria were long thought to be individual cells acting alone, we now accept that they are social organisms capable of acting together to exhibit a range of cooperative activities (14, 116). Many of these activities are involved in virulence and for this reason have been studied in the con ...
... Although bacteria were long thought to be individual cells acting alone, we now accept that they are social organisms capable of acting together to exhibit a range of cooperative activities (14, 116). Many of these activities are involved in virulence and for this reason have been studied in the con ...
Distribution and characteristic of nitrite-dependent anaerobic
... ddH2 O. Detailed information is exhibited in Table S1. Negative-control reactions in which the DNA template was replaced by nuclease-free water were also performed. The whole process was performed under sterile conditions on ice and away from light. Triplicate ...
... ddH2 O. Detailed information is exhibited in Table S1. Negative-control reactions in which the DNA template was replaced by nuclease-free water were also performed. The whole process was performed under sterile conditions on ice and away from light. Triplicate ...
PROKARYOTES AND THE ORIGINS OF METABOLIC DIVERSITY
... The traditional five-kingdom system recognizes one kingdom of prokaryotes (Monera) and four kingdoms of eukaryotes (Protista, Plantae, Fungi, and Animalia). • This system emphasizes the structural differences between prokaryotic and eukaryotic cells. Recent research in systematics has resulted in qu ...
... The traditional five-kingdom system recognizes one kingdom of prokaryotes (Monera) and four kingdoms of eukaryotes (Protista, Plantae, Fungi, and Animalia). • This system emphasizes the structural differences between prokaryotic and eukaryotic cells. Recent research in systematics has resulted in qu ...
Biofilm
A biofilm is any group of microorganisms in which cells stick to each other on a surface. These adherent cells are frequently embedded within a self-produced matrix of extracellular polymeric substance (EPS). Biofilm extracellular polymeric substance, which is also referred to as slime (although not everything described as slime is a biofilm), is a polymeric conglomeration generally composed of extracellular DNA, proteins, and polysaccharides. Biofilms may form on living or non-living surfaces and can be prevalent in natural, industrial and hospital settings. The microbial cells growing in a biofilm are physiologically distinct from planktonic cells of the same organism, which, by contrast, are single-cells that may float or swim in a liquid medium.Microbes form a biofilm in response to many factors, which may include cellular recognition of specific or non-specific attachment sites on a surface, nutritional cues, or in some cases, by exposure of planktonic cells to sub-inhibitory concentrations of antibiotics. When a cell switches to the biofilm mode of growth, it undergoes a phenotypic shift in behavior in which large suites of genes are differentially regulated.