press release
... to be a 'signature' protein for eukaryotic cells: dynamin. They continue to explore the bacterial cytoskeleton using X-ray crystallography and electron microscopy and are starting to use electron tomography of whole, frozen cells to visualise the cytoskeleton in cells. "Jan is now determining how ba ...
... to be a 'signature' protein for eukaryotic cells: dynamin. They continue to explore the bacterial cytoskeleton using X-ray crystallography and electron microscopy and are starting to use electron tomography of whole, frozen cells to visualise the cytoskeleton in cells. "Jan is now determining how ba ...
Bacterial Age
... we really do not have a universal explanation for the bacterial aging. As a matter of fact, some people claim that bacteria as well as other unicellular microorganisms do not senescent (5) since they appear to be immortal due to their autonomous and continuous cell cycles (6). The newly proposed bac ...
... we really do not have a universal explanation for the bacterial aging. As a matter of fact, some people claim that bacteria as well as other unicellular microorganisms do not senescent (5) since they appear to be immortal due to their autonomous and continuous cell cycles (6). The newly proposed bac ...
Interaction of the Fluorescent Dye 1-N
... The increase in k with duration of heat treatment indicates that heat makes cells accessible to the entry of NPN molecules and allows the dye to penetrate into the membranes, depending upon the severity of heat damage to the cell-surface structures. Two hypotheses can be proposed for this process: ( ...
... The increase in k with duration of heat treatment indicates that heat makes cells accessible to the entry of NPN molecules and allows the dye to penetrate into the membranes, depending upon the severity of heat damage to the cell-surface structures. Two hypotheses can be proposed for this process: ( ...
Light-powering Escherichia coli with proteorhodopsin
... the light-driven proton pump bacteriorhodopsin, used by halobacteria living in salt ponds to supplement respiration (3). In 2000, a novel light-driven proton pump, proteorhodopsin (PR), was discovered (4). The world’s oceans contain an estimated 1028 PRexpressing bacteria, placing them among the mos ...
... the light-driven proton pump bacteriorhodopsin, used by halobacteria living in salt ponds to supplement respiration (3). In 2000, a novel light-driven proton pump, proteorhodopsin (PR), was discovered (4). The world’s oceans contain an estimated 1028 PRexpressing bacteria, placing them among the mos ...
Open questions in the origin of eukaryotes
... • Ras/Rab/Rho‐type small GTPases • High mobility group (Y‐type) proteins • Reverse transcriptase (and retron elements) ...
... • Ras/Rab/Rho‐type small GTPases • High mobility group (Y‐type) proteins • Reverse transcriptase (and retron elements) ...
Isolation and Identification of Photosynthetic Bacterium Useful for
... metal solution contained 2.5 g EDTA, 1.54 g MnSO4·5H2O, 10.95 g ZnSO4·7H2O, 0.39 g CuSO4·5H2O, 7.0 g FeSO4· 7H2O, and 0.2 g CoCl2·6H2O per liter. The pH of the medium was adjusted to 6.8- 7.0 and then sterilized by autoclaving. A modified Ormerod medium [12] used for further cultivation of the bacte ...
... metal solution contained 2.5 g EDTA, 1.54 g MnSO4·5H2O, 10.95 g ZnSO4·7H2O, 0.39 g CuSO4·5H2O, 7.0 g FeSO4· 7H2O, and 0.2 g CoCl2·6H2O per liter. The pH of the medium was adjusted to 6.8- 7.0 and then sterilized by autoclaving. A modified Ormerod medium [12] used for further cultivation of the bacte ...
Acid Lactic Bacteria from Fermented Local Feed and it`s
... –negative and fastidious organisms, as “Generally Recognized as Safe (GRAS) organisms. Mankind has exploited these bacteria for thousands of years for the production of fermented food because of their ability to produce desirable change in taste, flavor and texture. B. Phenotypical Characterization ...
... –negative and fastidious organisms, as “Generally Recognized as Safe (GRAS) organisms. Mankind has exploited these bacteria for thousands of years for the production of fermented food because of their ability to produce desirable change in taste, flavor and texture. B. Phenotypical Characterization ...
`Don`t talk to me about permeability`
... the passage of certain amino acids into and out of the cell became possible. The mechanism of this transport, often against a concentration gradient of several orders of magnitude, has remained a subject of interest and importance and,pace MS, I propose to talk about permeability and to illustrate m ...
... the passage of certain amino acids into and out of the cell became possible. The mechanism of this transport, often against a concentration gradient of several orders of magnitude, has remained a subject of interest and importance and,pace MS, I propose to talk about permeability and to illustrate m ...
Improving orthogonal tRNA-synthetase recognition for
... in live mammalian cells. Bzo, but no Azi, has been used to crosslink proteins in mammalian cells before.13 Benzophenone can be photoactivated at wavelength longer than aryl azides (350–365 nm vs. o330 nm).14 However, our results showed that Azi could also be activated at the long wavelength 365 nm f ...
... in live mammalian cells. Bzo, but no Azi, has been used to crosslink proteins in mammalian cells before.13 Benzophenone can be photoactivated at wavelength longer than aryl azides (350–365 nm vs. o330 nm).14 However, our results showed that Azi could also be activated at the long wavelength 365 nm f ...
An Immortalized Myocyte Cell Line, HL-1, Expresses a Functional
... Although no cloning data is available, the existence of -receptor subtypes has been proposed,25,26 based on in vivo antagonism studies using naltrindole and its analogues, including naltriben (NTB), a putative 2 antagonist, and benzylidenenaltrexone (BNTX), a putative 1 antagonist. DPDPE and DADL ...
... Although no cloning data is available, the existence of -receptor subtypes has been proposed,25,26 based on in vivo antagonism studies using naltrindole and its analogues, including naltriben (NTB), a putative 2 antagonist, and benzylidenenaltrexone (BNTX), a putative 1 antagonist. DPDPE and DADL ...
figure - Journal of The Royal Society Interface
... bacteria n grows faster than n) and spontaneous phase separation in two or more dimensions [16]. Flocking theories, therefore, suffer from two substantial problems. First, GNFs necessarily cause large inhomogeneties and the break-up of any large cell aggregates that develop. Second, flocks are oblig ...
... bacteria n grows faster than n) and spontaneous phase separation in two or more dimensions [16]. Flocking theories, therefore, suffer from two substantial problems. First, GNFs necessarily cause large inhomogeneties and the break-up of any large cell aggregates that develop. Second, flocks are oblig ...
TALKING POINT The origin of the eukaryotic cell
... Gram-negative bacteria (N), Gram-positive bacteria (P) and eukaryotic organellar sequences [namely mitochondria (m) and chloroplasts (chl); 0], respectively. The numbers on the top refer to the position in the Halobacterium marismortui hsp70 sequence. The dashes (-) indicate identity with the amino ...
... Gram-negative bacteria (N), Gram-positive bacteria (P) and eukaryotic organellar sequences [namely mitochondria (m) and chloroplasts (chl); 0], respectively. The numbers on the top refer to the position in the Halobacterium marismortui hsp70 sequence. The dashes (-) indicate identity with the amino ...
Kingdom Protista - dwight.k12.il.us
... and chloroplast may have originated as prokaryotic life, so may the nucleus and other organelles • The idea is that a large prokaryotic organism engulfed smaller prokaryotes, • But rather than eating them, it allowed them to live within it as symbiotic organisms • Over time, the organisms became spe ...
... and chloroplast may have originated as prokaryotic life, so may the nucleus and other organelles • The idea is that a large prokaryotic organism engulfed smaller prokaryotes, • But rather than eating them, it allowed them to live within it as symbiotic organisms • Over time, the organisms became spe ...
Microbial Detection in the Environment, Part 1
... are often physiologically altered/stressed and not efficiently cultured using standard selective and differential media • Causes considerable underestimation of the concentrations of these bacteria in water and therefore, underestimation of their risks to human health • Stressed, injured and VBNC ba ...
... are often physiologically altered/stressed and not efficiently cultured using standard selective and differential media • Causes considerable underestimation of the concentrations of these bacteria in water and therefore, underestimation of their risks to human health • Stressed, injured and VBNC ba ...
"Pompeii worms" and their epibiotic bacteria - Archimer
... vestimentiferans (Cavanaugh et al., 1981; Bosch, Grassé, 1984 a, b; Felbeck, 1981) and molluscs (Cavanaugh, 1983; Fiala-Medioni, 1984). They present only epibiotic bacteria. The purpose of this study was to determine more precisely the morphological relationship betwecn the bacteria and the worm epi ...
... vestimentiferans (Cavanaugh et al., 1981; Bosch, Grassé, 1984 a, b; Felbeck, 1981) and molluscs (Cavanaugh, 1983; Fiala-Medioni, 1984). They present only epibiotic bacteria. The purpose of this study was to determine more precisely the morphological relationship betwecn the bacteria and the worm epi ...
Transport
... Ions traveling down their concentration gradient (small polar) Ions traveling up their concentration gradient (small polar) Water (small polar molecule) Amino acids (large molecules of varying polarity) ...
... Ions traveling down their concentration gradient (small polar) Ions traveling up their concentration gradient (small polar) Water (small polar molecule) Amino acids (large molecules of varying polarity) ...
Prokaryotes Reading
... Some of the oldest known fossils are of bacteria. These organisms lived on Earth when it had a climate and atmosphere very different from those of today. Some of these fossils contain compounds similar to chlorophyll and so were among the first photosynthetic organisms. As Earth’s atmosphere became ...
... Some of the oldest known fossils are of bacteria. These organisms lived on Earth when it had a climate and atmosphere very different from those of today. Some of these fossils contain compounds similar to chlorophyll and so were among the first photosynthetic organisms. As Earth’s atmosphere became ...
Lab Part 1: Culturing and Isolating Bacteria
... Cell organelles that Escherichia coli and other bacteria have in common with eukaryotes are a. chloroplasts. c. nuclei. b. mitochondria. d. ribosomes. Bacterial cells such as Escherichia coli transfer pieces of genetic material in a process called a. binary fission. c. conjugation. b. mitosis. d. se ...
... Cell organelles that Escherichia coli and other bacteria have in common with eukaryotes are a. chloroplasts. c. nuclei. b. mitochondria. d. ribosomes. Bacterial cells such as Escherichia coli transfer pieces of genetic material in a process called a. binary fission. c. conjugation. b. mitosis. d. se ...
It`s Alive!!
... Voyages Through Time, http://www.seti.org/epo/vtt-curriculum/index.php, a high school curriculum. Want more about the characteristics of viruses and bacteria? This activity can be expanded to include eukaryotes. Eukaryote Model Virus ...
... Voyages Through Time, http://www.seti.org/epo/vtt-curriculum/index.php, a high school curriculum. Want more about the characteristics of viruses and bacteria? This activity can be expanded to include eukaryotes. Eukaryote Model Virus ...
Exit from dormancy in microbial organisms
... constitute only a small fraction of the population, and although this state does not seem to be a response to environmental stimuli, little is known about how persisters are formed. In Escherichia coli, the kinase HipA phosphorylates the translation factor elongation factor-Tu (EF-Tu) in vitro, and ...
... constitute only a small fraction of the population, and although this state does not seem to be a response to environmental stimuli, little is known about how persisters are formed. In Escherichia coli, the kinase HipA phosphorylates the translation factor elongation factor-Tu (EF-Tu) in vitro, and ...
GemmatimonadetesFinal
... Gemmatimonadetes is a new phylum, whose first cultivable member was discovered in 2003, Gemmatimonas Aurantiaca, which the phylum is also named after. The name is derived from Latin gemmatus meaning “provided with buds” and Monas meaning “one unit”, thus the name Gemmatimonas, a budding unit. They ...
... Gemmatimonadetes is a new phylum, whose first cultivable member was discovered in 2003, Gemmatimonas Aurantiaca, which the phylum is also named after. The name is derived from Latin gemmatus meaning “provided with buds” and Monas meaning “one unit”, thus the name Gemmatimonas, a budding unit. They ...
Lack of evidence for functional ADP-activated
... expression of the P2X1del was approximately 20% compared with the P2X1WT. Cell surface biotinylation studies demonstrated that the P2X1WT receptor was trafficked to the cell surface; however, surface expression of P2X1del receptors was below the limit of detection (Figure 1D). These results indicate ...
... expression of the P2X1del was approximately 20% compared with the P2X1WT. Cell surface biotinylation studies demonstrated that the P2X1WT receptor was trafficked to the cell surface; however, surface expression of P2X1del receptors was below the limit of detection (Figure 1D). These results indicate ...
20150324133963
... • Most of the cells in the thyroid are called follicular cells, but there are others called parafollicular cells (or C cells) which produce another important hormone called calcitonin. The thyroid also has four teensy glands called the parathyroid glands, which are embedded in the back of the thyr ...
... • Most of the cells in the thyroid are called follicular cells, but there are others called parafollicular cells (or C cells) which produce another important hormone called calcitonin. The thyroid also has four teensy glands called the parathyroid glands, which are embedded in the back of the thyr ...
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.