Fluorophore‐Labeled Cyclic Nucleotides as Potent Agonists of Cyclic Nucleotide‐Regulated Ion Channels
نویسندگان
چکیده
منابع مشابه
Cyclic nucleotide-gated ion channels.
Cyclic nucleotide-gated (CNG) channels are nonselective cation channels first identified in retinal photoreceptors and olfactory sensory neurons (OSNs). They are opened by the direct binding of cyclic nucleotides, cAMP and cGMP. Although their activity shows very little voltage dependence, CNG channels belong to the superfamily of voltage-gated ion channels. Like their cousins the voltage-gated...
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Hyperpolarization-activated cyclic nucleotide-gated (HCN) ion channels play an important role in regulating electrical activity in the heart and brain. They are gated by the binding of cyclic nucleotides to a conserved, intracellular cyclic nucleotide-binding domain (CNBD), which is connected to the channel pore by a C-linker region. Binding of cyclic nucleotides increases the rate and extent o...
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Cooperativity is one of the marvelous "emergent" behaviors of macro-molecules undergoing multimolecular reactions (Perutz, 1990). Cooperativity sculpts the potential energy landscape of such a reaction so as to create a seemingly teleological pathway for reaching and stabilizing a particular state for example, a multimeric protein with multiple ligand sites occupied. Ligandgated ion channels pr...
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Sensitive and specific radioimmunoassays have been developed for cyclic adenosine 3’, 5’-monophosphate (CAMP), cyclic guanosine 3’ ,5’-monophosphate (cGMP), cyclic inosine 3’ ,5’-monophosphate (cIMP), and cyclic uridine 3’, 5’monophosphate (cUMP). These assays are based upon competition of the cyclic nucleotide with isotopically labeled cyclic nucleotide derivatives for binding sites on specifi...
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Gap junction channels exhibit connexin dependent biophysical properties, including selective intercellular passage of larger solutes, such as second messengers and siRNA. Here, we report the determination of cyclic nucleotide (cAMP) permeability through gap junction channels composed of Cx43, Cx40, or Cx26 using simultaneous measurements of junctional conductance and intercellular transfer of c...
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ژورنال
عنوان ژورنال: ChemBioChem
سال: 2020
ISSN: 1439-4227,1439-7633
DOI: 10.1002/cbic.202000116