Isolation and characterization of a marine magnetotactic spirillum
... 3.3. Intracellular structures of QH-2 TEM observations and statistical analyses showed that each QH-2 cell contained 7e28 magnetosomes, with an average number of 16 5 per cell (Fig. 3A and B), which is similar to the number of magnetosomes found in MMS-1 (Meldrum et al., 1993). The magnetosome cry ...
... 3.3. Intracellular structures of QH-2 TEM observations and statistical analyses showed that each QH-2 cell contained 7e28 magnetosomes, with an average number of 16 5 per cell (Fig. 3A and B), which is similar to the number of magnetosomes found in MMS-1 (Meldrum et al., 1993). The magnetosome cry ...
Sagittula stellata gen. nov., sp. nov., a Lignin
... tests for growth on different carbon sources, bacteriochlorophyll u production, poly-P-hydroxybutyrateaccumulation, and other characteristics, were performed as described previously (21). Spore production was determined in BM containing yeast extract at the late exponential phase by heating the cult ...
... tests for growth on different carbon sources, bacteriochlorophyll u production, poly-P-hydroxybutyrateaccumulation, and other characteristics, were performed as described previously (21). Spore production was determined in BM containing yeast extract at the late exponential phase by heating the cult ...
Document
... A (C5b,6,7,8)1(C9)n complex forms and drills a hole in the membrane, leading to apoptosis or the hypotonic lysis of cells. Neisseria bacteria are very sensitive to this manner of killing, while gram-positive bacteria are relatively insensitive. The C9 component is similar to perforin, which is produ ...
... A (C5b,6,7,8)1(C9)n complex forms and drills a hole in the membrane, leading to apoptosis or the hypotonic lysis of cells. Neisseria bacteria are very sensitive to this manner of killing, while gram-positive bacteria are relatively insensitive. The C9 component is similar to perforin, which is produ ...
Snapping magnetosome chains by asymmetric cell division in
... perform multiple functionalities (Katzmann et al., 2010; Draper et al., 2011). Another key question of MTB cell division is how do MTB overcome the intra-chain magnetic force during division? In MTB cell, the arrangement of stable single domain magnetosomes in chain structure results in a net magnet ...
... perform multiple functionalities (Katzmann et al., 2010; Draper et al., 2011). Another key question of MTB cell division is how do MTB overcome the intra-chain magnetic force during division? In MTB cell, the arrangement of stable single domain magnetosomes in chain structure results in a net magnet ...
Controversy in Virology: Bacteriophage Therapy versus Antibiotics
... By their very nature bacteriophages appear to be great alternatives for treating bacterial infections and diseases. Phages are highly specific to their bacterial counterparts, therefore a microbial imbalance in the body or secondary infections do not occur (Summers, 2001). Conversely to antibiotics, ...
... By their very nature bacteriophages appear to be great alternatives for treating bacterial infections and diseases. Phages are highly specific to their bacterial counterparts, therefore a microbial imbalance in the body or secondary infections do not occur (Summers, 2001). Conversely to antibiotics, ...
Investigating Bacterial Pathogen-host Interaction by Using Scanning
... neuropathy Guillain-Barre syndrome. Campylobacter-mediated pathogenesis involved gut adherence and invasion of human intestinal cells. In contrast to most entereopathogens such as Salmonella, Shigella, EPEC, and ETEC, C. jejuni lacks traditional virulence factors like T3SS. The molecular mechanism o ...
... neuropathy Guillain-Barre syndrome. Campylobacter-mediated pathogenesis involved gut adherence and invasion of human intestinal cells. In contrast to most entereopathogens such as Salmonella, Shigella, EPEC, and ETEC, C. jejuni lacks traditional virulence factors like T3SS. The molecular mechanism o ...
The Role of Exopolysaccharides in Adhesion of
... embed. The majority will therefore be present on the surface due only to attachment. As similar numbers of attached bacteria were observed for both the mucoid and non-mucoid strains, this may possibly suggest the involvement of some other surface component in adhesion which would otherwise be masked ...
... embed. The majority will therefore be present on the surface due only to attachment. As similar numbers of attached bacteria were observed for both the mucoid and non-mucoid strains, this may possibly suggest the involvement of some other surface component in adhesion which would otherwise be masked ...
Yersinia pestis and plague - Biochemical Society Transactions
... range of so-called effector proteins (or effector Yersinia outer proteins, or Yops) into the host cell via the secretory apparatus [13,14]. The functions of the effector Yops fall broadly into two groups: YopH and YopT target the cytoskeleton by dephosphosphorylating paxillin/focal adhesion kinase a ...
... range of so-called effector proteins (or effector Yersinia outer proteins, or Yops) into the host cell via the secretory apparatus [13,14]. The functions of the effector Yops fall broadly into two groups: YopH and YopT target the cytoskeleton by dephosphosphorylating paxillin/focal adhesion kinase a ...
A Ride with Listeria monocytogenes: A Trojan Horse
... elderly. (Portnoy et al., 2002, Vázquez-Boland et al., 2001, and Dyer et al., 2002). Listeriosis is more dominant in females because of differential production of the immunosuppressive cytokine IL-10 (Pasche et al., 2005). Immunocompetent individuals usually survive the infection, whereas those with ...
... elderly. (Portnoy et al., 2002, Vázquez-Boland et al., 2001, and Dyer et al., 2002). Listeriosis is more dominant in females because of differential production of the immunosuppressive cytokine IL-10 (Pasche et al., 2005). Immunocompetent individuals usually survive the infection, whereas those with ...
Quorum Sensing as a Potential Antimicrobial Target
... Quorum sensing in bacterial pathogenesis QS is involved in expression of virulence genes in various bacteria, indicating the possible role of quorum sensing as a drug target. Several QS system mutant bacteria show the heavily reduced pathogenicity. Pseudomonas aeruginosa mutant in synthesis o ...
... Quorum sensing in bacterial pathogenesis QS is involved in expression of virulence genes in various bacteria, indicating the possible role of quorum sensing as a drug target. Several QS system mutant bacteria show the heavily reduced pathogenicity. Pseudomonas aeruginosa mutant in synthesis o ...
From indolence to persistence
... important role for indole signalling in bacterial persistence and reveal a new avenue for developing therapeutics to combat antibiotic-tolerant bacterial ...
... important role for indole signalling in bacterial persistence and reveal a new avenue for developing therapeutics to combat antibiotic-tolerant bacterial ...
Powering Nanobots - Computer Science at UVA
... also be too inefficient to counter Brownian motion, whether or not the robot’s motion is constrained. Nature, however, has found ways to put Brownian motion to work rather than fighting it. Many biological motors are based on the principle of the Brownian ratchet, which uses energy from chemical cat ...
... also be too inefficient to counter Brownian motion, whether or not the robot’s motion is constrained. Nature, however, has found ways to put Brownian motion to work rather than fighting it. Many biological motors are based on the principle of the Brownian ratchet, which uses energy from chemical cat ...
ION CHANNELS AS DRUG TARGETS
... • Ion channels consist of protein molecules designed to form water-filled pores that span the membrane, and they can switch between open and closed states. • The rate and direction of ion movement through the pore is governed by the electrochemical gradient for the ion in question, which is a funct ...
... • Ion channels consist of protein molecules designed to form water-filled pores that span the membrane, and they can switch between open and closed states. • The rate and direction of ion movement through the pore is governed by the electrochemical gradient for the ion in question, which is a funct ...
Microbiology Lab 1 Examination of Bacteria
... precipitates out within the cell. Gram +ve bacteria have low lipid content Lipid is dissolved by alcohol The alcohol/acetone mixture then causes dehydration of the multilayered peptidoglycan ...
... precipitates out within the cell. Gram +ve bacteria have low lipid content Lipid is dissolved by alcohol The alcohol/acetone mixture then causes dehydration of the multilayered peptidoglycan ...
11. Reaction Diffusion, Chemotaxis, and Nonlocal Mechanisms
... 11. Reaction Diffusion, Chemotaxis, and Nonlocal Mechanisms ...
... 11. Reaction Diffusion, Chemotaxis, and Nonlocal Mechanisms ...
Hijacking of eukaryotic functions by intracellular bacterial pathogens
... cells is mediated by at least two proteins, internalin A (InlA) and internalin B (InlB) [11]. InlA is covalently linked to the peptidoglycan by a LPTTG motif located near the C-terminal end. InlA also harbors several leucine-rich repeats (LRRs) in its N-terminal half, probably involved in protein-pr ...
... cells is mediated by at least two proteins, internalin A (InlA) and internalin B (InlB) [11]. InlA is covalently linked to the peptidoglycan by a LPTTG motif located near the C-terminal end. InlA also harbors several leucine-rich repeats (LRRs) in its N-terminal half, probably involved in protein-pr ...
Chapter 13
... • Flagella – Structure and arrangement – Differ structurally and functionally from prokaryotic flagella – Within the cytoplasmic membrane – Shaft composed of tubulin arranged to form microtubules – Filaments anchored to cell by basal body – May be single or multiple ...
... • Flagella – Structure and arrangement – Differ structurally and functionally from prokaryotic flagella – Within the cytoplasmic membrane – Shaft composed of tubulin arranged to form microtubules – Filaments anchored to cell by basal body – May be single or multiple ...
Synthetic cell surface receptors for delivery of therapeutics and probes
... deliver LDL into membrane-sealed vesicles that fuse to form endosomes (Fig. 2). In this process, clathrin polymerizes to form a lattice of clathrin hexagons and pentagons that surround vesicles as they bud from the plasma membrane. Changes in membrane curvature required for vesicle budding are stabi ...
... deliver LDL into membrane-sealed vesicles that fuse to form endosomes (Fig. 2). In this process, clathrin polymerizes to form a lattice of clathrin hexagons and pentagons that surround vesicles as they bud from the plasma membrane. Changes in membrane curvature required for vesicle budding are stabi ...
validation report ATP bac method final
... microorganisms. cATP values can be equated into Equivalent Microorganisms/ml (1pg ATP = 1000 Equivalent microorganisms). Equivalent microorganisms include cultivable microorganisms and non cultivable microorganisms and this level is not directly comparable to CFU results from culture methods. Howeve ...
... microorganisms. cATP values can be equated into Equivalent Microorganisms/ml (1pg ATP = 1000 Equivalent microorganisms). Equivalent microorganisms include cultivable microorganisms and non cultivable microorganisms and this level is not directly comparable to CFU results from culture methods. Howeve ...
Planctomyces stranskae - International Journal of Systematic and
... Description of Planctornyces guttaeformis (ex Hortobagyi 1965) sp. nov., nom. rev. Planctomyces guttaeformis [gutt. ae.form’is. L. gen. noun gutta(e) a drop; L. suffix -formis in the form or shape of; M.L. adj. guttaeformis drop shaped]. Cells are relatively large (2.9 to 3.0 pm in length, 1.15 to 1 ...
... Description of Planctornyces guttaeformis (ex Hortobagyi 1965) sp. nov., nom. rev. Planctomyces guttaeformis [gutt. ae.form’is. L. gen. noun gutta(e) a drop; L. suffix -formis in the form or shape of; M.L. adj. guttaeformis drop shaped]. Cells are relatively large (2.9 to 3.0 pm in length, 1.15 to 1 ...
A bacterial tubulovesicular network - Journal of Cell Science
... might have been composed of a multifunctional TVN. This network was probably formed by distinct communicating compartments serving as the site of protein synthesis, endocytosis and degradation of internalized material (Abodeely et al., 2009). Therefore, a TVN that links the nuclear envelope to endoc ...
... might have been composed of a multifunctional TVN. This network was probably formed by distinct communicating compartments serving as the site of protein synthesis, endocytosis and degradation of internalized material (Abodeely et al., 2009). Therefore, a TVN that links the nuclear envelope to endoc ...
Bacteria between protists and phages: from
... intracellular granules fuse with the phagosome and discharge their contents (arrows) to form a phagolysosome (B). In addition to this intracellular killing mechanism, activated neutrophils release fibres called neutrophil extracellular traps that fix and kill bacteria and yeasts (C). The picture is ...
... intracellular granules fuse with the phagosome and discharge their contents (arrows) to form a phagolysosome (B). In addition to this intracellular killing mechanism, activated neutrophils release fibres called neutrophil extracellular traps that fix and kill bacteria and yeasts (C). The picture is ...
390K
... Skovgaard, 2000), including G. instriatum (Uchida et al., 1997). Therefore, it is possible that the observed cytoplasmic CFB were taken up as prey and maintained as isolated clusters in the cytoplasm. However, these bacteria were rare as free-living organisms in the culture medium, making this hypot ...
... Skovgaard, 2000), including G. instriatum (Uchida et al., 1997). Therefore, it is possible that the observed cytoplasmic CFB were taken up as prey and maintained as isolated clusters in the cytoplasm. However, these bacteria were rare as free-living organisms in the culture medium, making this hypot ...
Hampton One High School Biology Standards Sequencing Guide
... biological evolution. Exemplify scientific evidence in the fields of anatomy, embryology, biochemistry, and paleontology that underlies the theory of biological evolution. Summarize ways that scientists use data from a variety of sources to investigate and critically analyze aspects of evolutionary ...
... biological evolution. Exemplify scientific evidence in the fields of anatomy, embryology, biochemistry, and paleontology that underlies the theory of biological evolution. Summarize ways that scientists use data from a variety of sources to investigate and critically analyze aspects of evolutionary ...
Classification of Life – Domains and Kingdoms
... Kingdom Plantae – these organisms are multicellular eukaryotes that make their own food. Kingdom Animalia – these organisms are multicellular eukaryotes that consume other living organisms Kingdom Fungi – these organisms are unicellular or multicellular eukaryotes that absorb nutrients from dead ...
... Kingdom Plantae – these organisms are multicellular eukaryotes that make their own food. Kingdom Animalia – these organisms are multicellular eukaryotes that consume other living organisms Kingdom Fungi – these organisms are unicellular or multicellular eukaryotes that absorb nutrients from dead ...
Chemotaxis
Chemotaxis (from chemo- + taxis) is the movement of an organism in response to a chemical stimulus. Somatic cells, bacteria, and other single-cell or multicellular organisms direct their movements according to certain chemicals in their environment. This is important for bacteria to find food (e.g., glucose) by swimming toward the highest concentration of food molecules, or to flee from poisons (e.g., phenol). In multicellular organisms, chemotaxis is critical to early development (e.g., movement of sperm towards the egg during fertilization) and subsequent phases of development (e.g., migration of neurons or lymphocytes) as well as in normal function. In addition, it has been recognized that mechanisms that allow chemotaxis in animals can be subverted during cancer metastasis.Positive chemotaxis occurs if the movement is toward a higher concentration of the chemical in question; negative chemotaxis if the movement is in the opposite direction. Chemically prompted kinesis (randomly directed or nondirectional) can be called chemokinesis.