Connexin phosphorylation as a regulatory event linked to gap junction channel assembly
نویسندگان
چکیده
منابع مشابه
Regulation of connexin degradation as a mechanism to increase gap junction assembly and function.
Connexins, the integral membrane protein constituents of gap junctions, are degraded at a rate (t(12) = 1.5-5 h) much faster than most other cell surface proteins. Although the turnover of connexins has been shown to be sensitive to inhibitors of either the lysosome or of the proteasome, how connexins are targeted for degradation and whether this process can be regulated to affect intercellular...
متن کاملRegulation of connexin biosynthesis, assembly, gap junction formation, and removal.
Gap junctions (GJs) are the only known cellular structures that allow a direct transfer of signaling molecules from cell-to-cell by forming hydrophilic channels that bridge the opposing membranes of neighboring cells. The crucial role of GJ-mediated intercellular communication (GJIC) for coordination of development, tissue function, and cell homeostasis is now well documented. In addition, rece...
متن کاملInhibition of gap junction and adherens junction assembly by connexin and A-CAM antibodies
We examined the roles of the extracellular domains of a gap junction protein and a cell adhesion molecule in gap junction and adherens junction formation by altering cell interactions with antibody Fab fragments. Using immunoblotting and immunocytochemistry we demonstrated that Novikoff cells contained the gap junction protein, connexin43 (Cx43), and the cell adhesion molecule, A-CAM (N-cadheri...
متن کاملJunction interaction in the seminiferous epithelium: regulatory roles of connexin-based gap junction.
Anchoring junction, tight junction (TJ), and gap junction (GJ) constitute three major junction types in mammalian testes. Connexin is the well-studied GJ protein. It forms the building block of connexon, which is composed of six connexin units. Connexon forms the functional GJ when pairing with counter-connexon from neighboring cells. In the testis, at least eleven connexins are associated with...
متن کاملConnexin mediates gap junction-independent resistance to cellular injury.
Although gap junctions regulate essential processes during development and differentiation, the role of gap junctions in cell death is poorly understood. We demonstrate here that the forced expression of connexin 43 (Cx43), the main constituent of astrocytic gap junctions, protected against cell injury with a potency that was comparable with that from the expression of the proto-oncogene bcl2. ...
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ژورنال
عنوان ژورنال: Biochimica et Biophysica Acta (BBA) - Biomembranes
سال: 2005
ISSN: 0005-2736
DOI: 10.1016/j.bbamem.2004.09.013