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Connexin43 phosphorylation: structural changes and biological effects Solan JL; Lampe PDBiochem J 2009[Apr]; 419 (2): 261-72Vertebrate gap junctions, composed of proteins from the connexin gene family, play critical roles in embryonic development, co-ordinated contraction of excitable cells, tissue homoeostasis, normal cell growth and differentiation. Phosphorylation of connexin43, the most abundant and ubiquitously expressed connexin, has been implicated in the regulation of gap junctional communication at several stages of the connexin 'life cycle', including hemichannel oligomerization, export of the protein to the plasma membrane, hemichannel activity, gap junction assembly, gap junction channel gating and connexin degradation. Consistent with a short (1-5 h) protein half-life, connexin43 phosphorylation is dynamic and changes in response to activation of many different kinases. The present review assesses our current understanding of the effects of phosphorylation on connexin43 structure and function that in turn regulate gap junction biology, with an emphasis on events occurring in heart and skin.|Cell Cycle/genetics/physiology[MESH]|Connexin 43/*chemistry/*metabolism/physiology[MESH]|Gap Junctions/metabolism/physiology[MESH]|Models, Biological[MESH]|Phosphorylation/physiology[MESH]|Protein Processing, Post-Translational/genetics/physiology[MESH] |