Halobacterial Gas Vesicles. (A) Halobacterium salinarum colonies on a solid medium. Pink, opaque colonies from gas vesicle-containing cells; a red, transparent colony from gas vesicle-deficient cells. (B) Cryo-transmission electron micrograph of cells in 3 M NaCl plus 81 mM MgSO4. The image has the low signal-to-noise ratio due to the high concentration of NaCl. (C) Cryo-transmission electron micrograph of a focused ion beam-thinned cell in 3 M NaCl plus 81 mM MgSO4. The periodicity of the gas vesicle is clearly discerned. (A) Adapted from Pfeifer (2015), (B, C) from Bollschweiler et al. (2017), with permission from the publisher.
Gas vesicles, also known as gas vacuoles, are nanocompartments in certain prokaryotic organisms, which help in buoyancy.[1] Gas vesicles are composed entirely of protein; no lipids or carbohydrates have been detected.
Gasvesicles, also known as gas vacuoles, are nanocompartments in certain prokaryotic organisms, which help in buoyancy. Gasvesicles are composed entirely...
diameter of the gasvesicle and pressure at which it will collapse – the wider the gasvesicle the weaker it becomes. However, wider gasvesicles are more efficient...
salinarum, Haloferax mediterranei produces gasvesicles, believed to act aiding buoyancy. The production of gasvesicles only occurs in high salt concentrations...
gasvesicle structural protein found in different phyla of bacteria and archaea for example in Halobacterium salinarum or Haloferax mediterranei. Gas...
diameter of the gasvesicle and pressure at which it will collapse – the wider the gasvesicle the weaker it becomes. However, wider gasvesicles are more efficient...
filled with gas called vesicles. A related texture is amygdaloidal in which the volcanic rock, usually basalt or andesite, has cavities, or vesicles, that are...
Volcanic gases are gases given off by active (or, at times, by dormant) volcanoes. These include gases trapped in cavities (vesicles) in volcanic rocks...
doi:10.1111/j.1469-8137.2004.01022.x. Kinsman, R. (January 1991). "Gasvesicle collapse by turgor pressure and its role in buoyancy regulation by Anabaena...
DasSarma's laboratory has been instrumental in the study of buoyant gasvesicle nanoparticles (GVNPs) in Halobacterium sp. NRC-1, and developed an expression...
In water columns, some cyanobacteria float by forming gasvesicles, as in archaea. These vesicles are not organelles as such. They are not bounded by lipid...
Amygdules or amygdales (/əˈmɪɡdjuːlz, -deɪlz/) form when the vesicles (pores from gas bubbles in lava) of a volcanic rock or other extrusive igneous rock...
bacteria may express curli fibrils. GvpA, forming the walls of particular Gasvesicles, i.e. the buoyancy organelles of aquatic archaea and eubacteria Fap fibrils...
salinarum produce gasvesicles, which allow them to float to the surface where oxygen levels are higher and more light is available. These vesicles are complex...
the bilaminar embryonic disc. This is alternatively called the umbilical vesicle by the Terminologia Embryologica (TE), though yolk sac is far more widely...
A liposome is a small artificial vesicle, spherical in shape, having at least one lipid bilayer. Due to their hydrophobicity and/or hydrophilicity, biocompatibility...
Many Halobacterium species possess proteinaceous organelles called gasvesicles. Halobacteria can be found in highly saline lakes such as the Great Salt...
of a Haloquadratum walsbyi square cell. The numerous light dots are gasvesicles that allow flotation to the surface, most likely to acquire oxygen. Scale...
vesicular volcanic rock that differs from pumice in having larger vesicles, thicker vesicle walls, and being dark colored and denser. Pumice is created when...
found in bacteria and archaea include encapsulin nanocompartments and gasvesicles. The first BMCs were observed in the 1950s in electron micrographs of...
Generally, Chlorobium are rod or vibroid shaped and some species contain gasvesicles. They can develop as single or aggregate cells. They can be green or...
A striking morphological feature of the organism is the presence of gasvesicles (provide cells the ability to flow in fluid making the CDA spores with...
relatively low density, as it is riddled with macroscopic ellipsoidal vesicles (gas bubbles), but in contrast to pumice, scoria always has a specific gravity...
iron, silica, and other dissolved minerals passed through the trapped gasvesicles. These quartz-rich groundwater solutions deposited concentric bands of...
either liquid–liquid or liquid–solid, although there have been reports of gasvesicles surrounded by a phase separated protein coat in the cytoplasm of some...
Nerve agents, sometimes also called nerve gases, are a class of organic chemicals that disrupt the mechanisms by which nerves transfer messages to organs...
the content and size of the vacuoles shows diurnal variation. Large gasvesicles (either along the periphery as seen in T. erythaeum or found distributed...
flagellum but has potential for movement through the creation of gasvesicles. These gasvesicles have only been produced in the presence of hydrogen and carbon...
Polaromonas vacuolata is a psychrophilic bacterium with gasvesicles from the genus Polaromonas, which was isolated from Antarctica. The optimum temperature...
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