Results 211 to 220 of about 73,986 (253)
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Seminars in Cell Biology, 1992
Gap junction channels, now known to be formed of connexins, connect the interiors of apposed cells. These channels can be opened and closed by various physiological stimuli and experimental treatments. They are permeable to ions and neutral molecules up to a size of about 1 kDa or 1.5 nm diameter, including second messengers and metabolites.
M V, Bennett, V K, Verselis
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Gap junction channels, now known to be formed of connexins, connect the interiors of apposed cells. These channels can be opened and closed by various physiological stimuli and experimental treatments. They are permeable to ions and neutral molecules up to a size of about 1 kDa or 1.5 nm diameter, including second messengers and metabolites.
M V, Bennett, V K, Verselis
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Gap junctional communication during neuromuscular junction formation
Neuron, 1991We have tested whether gap junctions form between nerve and muscle during their initial contact, before establishing the chemical synapse. Embryonic Xenopus stage 18-20 myotomes and neural tubes were permeabilized with DMSO to load appropriate reagents, dissociated, and cocultured.
F, Allen, A, Warner
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Nonredundant Gap Junction Functions
Physiology, 2003The need for molecular heterogeneity of gap junction channel proteins in vivo has been enigmatic. Recently, functional replacement of one channel gene with another in mice and flies has revealed that cellular health depends not simply on gap junction communication but also requires the correct type of intercellular channel subunit.
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Gap junction proteins form specialized intercellular communication channels, including electrical synapses, that regulate cellular metabolism and signaling. We present a molecular inventory of the gap junction proteins-innexins (INX-like) in ctenophores, focusing on two reference species, Pleurobrachia bachei and Mnemiopsis leidyi.
Andrea B, Kohn, Leonid L, Moroz
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Andrea B, Kohn, Leonid L, Moroz
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Tight Junctions and Gap Junctions
2010Tight junctions have several major functions. They seal the intercellular space in epithelial and endothelial cell layers and prevent free paracellular passage of substances. They determine the polarity of epithelial cells by creating a boundary between the apical domain of the plasma membrane and the basolateral domain and prevent diffusion of lipids ...
Margit Pavelka, Jürgen Roth
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Gap Junctions as Electrical Synapses
Journal of Neurocytology, 1996Gap junctions are the morphological substrate of one class of electrical synapse. The history of the debate on electrical vs. chemical transmission is instructive. One lesson is that Occam's razor sometimes cuts too deep; the nervous system does its operations in a number of different ways and a unitarian approach can lead one astray.
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1993
One of the main avenues by which cells communicate with each other is through transmembranous channels which span the extracellular space, thereby allowing the direct transfer of small molecules and ions. The size range of admitted molecules allows the diffusion of current-carrying ions such as K+, Na+, Cl-, and second messenger molecules such as cAMP,
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One of the main avenues by which cells communicate with each other is through transmembranous channels which span the extracellular space, thereby allowing the direct transfer of small molecules and ions. The size range of admitted molecules allows the diffusion of current-carrying ions such as K+, Na+, Cl-, and second messenger molecules such as cAMP,
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