Search results
Results From The WOW.Com Content Network
Chemotaxis (from chemo-+ taxis) is the movement of an organism or entity in response to a chemical stimulus. [1] Somatic cells, bacteria, and other single-cell or ...
Other chemotaxis assay techniques Besides the above-mentioned two most commonly used family of techniques, a wide range of protocols were developed to measure chemotactic activity. Some of them are only qualitative, like aggregation tests, where small pieces of agar or filters are placed onto a slide and accumulation of cells around is measured.
Chemotaxis is described in prokaryotic and eukaryotic cells, but signalling mechanisms (receptors, intracellular signaling) and effectors are significantly different. Durotaxis is the directional movement of a cell along a stiffness gradient. Electrotaxis (or galvanotaxis) is the directional movement of motile cells along the vector of an ...
In general terms, chemotaxis is a biological process where living entities, such as cells or organisms, detect, maneuver, and react in response to a chemical signal in their environment. [1] Such a phenomenon is critical for many biological processes, including but not limited to wound healing, detection of food, and avoidance of many toxins. [2]
Sperm chemotaxis is a form of sperm guidance, in which sperm cells (spermatozoa) follow a concentration gradient of a chemoattractant secreted from the oocyte and thereby reach the oocyte. Background [ edit ]
The methyl-accepting chemotaxis proteins (MCP, also aspartate receptor) are a family of transmembrane receptors that mediate chemotactic response in certain enteric bacteria, such as Salmonella enterica enterica and Escherichia coli. [3]
The diverse feature of the chemotaxis receptors and ligands provides the possibility to select chemotactic responder cells with a simple chemotaxis assay. By chemotactic selection we can determine whether a still not characterized molecule acts via the long- or the short-term receptor pathway.
Chemotaxis hinges on the stochastic binding/unbinding of molecules with surface receptors, the transduction of this information through an intracellular signaling cascade, and the activation and control of flagellar motors. The intrinsic randomness of these processes is a central challenge that cells must deal with in order to navigate ...