Cell signaling (Cell signalling in British English) is part of a complex system of communication that governs basic cellular activities and coordinates cell actions. One of the Biological pathway. (http://en.wikipedia.org/wiki/Cell_signaling)
- Extracellular signals determine whether a cell lives or dies, or whether it remains quiescent or is stimulated to perform its specific function.
- Intercellular signaling is clearly importent in the developing embryo, and in maintaining tissue organization.
Classified into several groups
- Dogma to neighboring cells and pathogens.
- Contact with neighboring cells, mediated through adhesion molecules and/or gap functions.
- Contact with ECM, mediated through integrins.
- Secreted molecules.
- Paracrine signaling.
- Autocrene signaling.
- Synaptic signaling.
- Endocrine signaling.
Cellular receptors
- Receptors associated with kinase activity
- Receptor tyrosine kinase
- No intrinsic catalytic activity receptor
- G protein-coupled receptor
- Nuclear receptor
- Other cless receptor (Notch, Wnt-b-catenin signaling)
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