Analysis of vertebrate gap junction protein.
نویسندگان
چکیده
منابع مشابه
Investigation of Novel Functions of a Gap Junction Protein, Connexin46
Connexin proteins are the principle structural components of gap junction channels that connect the cytoplasm of two cells and maintain direct intercellular communication through the exchange of ions, small molecules and cellular metabolites. Colocalization and tissue-specific expression of diverse connexin molecules are reported to occur in a variety of organs. Impairment of gap junctional int...
متن کاملStructure of the amino terminus of a gap junction protein.
Charged amino acid residues in the amino terminus of gap junction forming proteins (connexins) form part, if not all, of the transjunctional voltage sensor of gap junction channels and play a fundamental role in ion permeation. Results from studies of the voltage dependence of N-terminal mutants predict that residues 1-10 of Group I connexins lie within the channel pore and that the N-terminus ...
متن کاملBiophysical Properties of Connexin-45 Gap Junction Hemichannels Studied in Vertebrate Cells
Human HeLa cells transfected with mouse Cx45 and rat RIN cells transfected with chicken Cx45 were used to study the electrical and permeability properties of Cx45 gap junction hemichannels. With no extracellular Ca(2+), whole-cell recording revealed currents arising from hemichannels in both transfected cell lines. Multichannel currents showed a time-dependent activation or deactivation sensiti...
متن کاملTrafficking of gap junction channels at a vertebrate electrical synapse in vivo.
Trafficking and turnover of transmitter receptors required to maintain and modify the strength of chemical synapses have been characterized extensively. In contrast, little is known regarding trafficking of gap junction components at electrical synapses. By combining ultrastructural and in vivo physiological analysis at identified mixed (electrical and chemical) synapses on the goldfish Mauthne...
متن کاملFibroblast Growth Factor 4 Directs Gap Junction Expression in the Mesenchyme of the Vertebrate Limb Bud
Pattern in the developing limb depends on signaling by polarizing region mesenchyme cells, which are located at the posterior margin of the bud tip. Here we address the underlying cellular mechanisms. We show in the intact bud that connexin 43 (Cx43) and Cx32 gap junctions are at higher density between distal posterior mesenchyme cells at the tip of the bud than between either distal anterior o...
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ژورنال
عنوان ژورنال: The EMBO Journal
سال: 1983
ISSN: 0261-4189
DOI: 10.1002/j.1460-2075.1983.tb01611.x