Page last updated: 2024-10-24
ligand-gated monoatomic cation channel activity
Definition
Target type: molecularfunction
Enables the transmembrane transfer of an inorganic cation by a channel that opens when a specific ligand has been bound by the channel complex or one of its constituent parts. [GOC:mtg_transport, ISBN:0815340729]
Ligand-gated monoatomic cation channel activity describes the function of a protein that acts as a channel allowing the passage of single-atom cations across a cell membrane. This activity is triggered by the binding of a specific ligand molecule to the channel protein. The ligand's binding induces a conformational change in the protein, opening the channel and allowing the passage of ions. This process plays a vital role in various cellular processes, including neuronal signaling, muscle contraction, and sensory perception. Ligand-gated monoatomic cation channels are highly selective for specific cations, allowing them to regulate the flow of these ions across cell membranes. This selectivity is crucial for maintaining cellular homeostasis and for ensuring that specific cellular processes are carried out correctly. The activity of these channels can be modulated by various factors, including the presence of other molecules, the membrane potential, and the concentration of ions in the cell. Examples of ligand-gated monoatomic cation channels include the nicotinic acetylcholine receptor, which is responsible for mediating neuromuscular transmission, and the glutamate receptor, which plays a key role in synaptic plasticity in the brain.'
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Proteins (1)
| Protein | Definition | Taxonomy |
|---|---|---|
| Glutamate receptor 2 | A glutamate receptor 2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P42262] | Homo sapiens (human) |
Compounds (59)
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| aminolevulinic acid | 5-aminolevulinic acid : The simplest delta-amino acid in which the hydrogens at the gamma position are replaced by an oxo group. It is metabolised to protoporphyrin IX, a photoactive compound which accumulates in the skin. Used (in the form of the hydrochloride salt)in combination with blue light illumination for the treatment of minimally to moderately thick actinic keratosis of the face or scalp. Aminolevulinic Acid: A compound produced from succinyl-CoA and GLYCINE as an intermediate in heme synthesis. It is used as a PHOTOCHEMOTHERAPY for actinic KERATOSIS. | 4-oxo monocarboxylic acid; amino acid zwitterion; delta-amino acid | antineoplastic agent; dermatologic drug; Escherichia coli metabolite; human metabolite; mouse metabolite; photosensitizing agent; plant metabolite; prodrug; Saccharomyces cerevisiae metabolite |
| 5-aminovaleric acid | 5-aminopentanoic acid : A delta-amino acid comprising pentanoic acid with an amino substituent at C-5; a methylene homologue of gamma-aminobutyric acid (GABA) that is a weak GABA agonist. 5-aminovaleric acid: from red fox anal secretion; RN given refers to parent cpd | amino acid zwitterion; delta-amino acid; omega-amino fatty acid | human metabolite |
| alanylalanine | alanylalanine: RN given refers to (DL)-isomer | dipeptide | |
| alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid | alpha-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid: An IBOTENIC ACID homolog and glutamate agonist. The compound is the defining agonist for the AMPA subtype of glutamate receptors (RECEPTORS, AMPA). It has been used as a radionuclide imaging agent but is more commonly used as an experimental tool in cell biological studies. | non-proteinogenic alpha-amino acid | |
| cyclothiazide | cyclothiazide : 3,4-Dihydro-2H-1,2,4-benzothiadiazine 1,1-dioxide substituted at positions 3, 5 and 6 by a 2-norbornen-5-yl group, chlorine, and a sulfonamide group, respectively. A thiazide diuretic, it has been used in the management of hypertension and oedema. cyclothiazide: inhibits the desensitization of AMPA-type receptors; structure | benzothiadiazine | antihypertensive agent; diuretic |
| gyki 52466 | GYKI 52466: an AMPA (non-NMDA) receptor antagonist; structure given in first source | benzodiazepine | |
| kainic acid | Kainic Acid: (2S-(2 alpha,3 beta,4 beta))-2-Carboxy-4-(1-methylethenyl)-3-pyrrolidineacetic acid. Ascaricide obtained from the red alga Digenea simplex. It is a potent excitatory amino acid agonist at some types of excitatory amino acid receptors and has been used to discriminate among receptor types. Like many excitatory amino acid agonists it can cause neurotoxicity and has been used experimentally for that purpose. | dicarboxylic acid; L-proline derivative; non-proteinogenic L-alpha-amino acid; pyrrolidinecarboxylic acid | antinematodal drug; excitatory amino acid agonist |
| glycylglycine | dipeptide; dipeptide zwitterion | human metabolite | |
| glutamic acid | glutamic acid : An alpha-amino acid that is glutaric acid bearing a single amino substituent at position 2. Glutamic Acid: A non-essential amino acid naturally occurring in the L-form. Glutamic acid is the most common excitatory neurotransmitter in the CENTRAL NERVOUS SYSTEM. | glutamic acid; glutamine family amino acid; L-alpha-amino acid; proteinogenic amino acid | Escherichia coli metabolite; ferroptosis inducer; micronutrient; mouse metabolite; neurotransmitter; nutraceutical |
| selfotel | selfotel: a N-methyl-D-aspartate (NMDA) antagonist; used to treat stroke-induced impairment | non-proteinogenic alpha-amino acid | |
| leucyl-alanine | Leu-Ala : A dipeptide composed of L-leucine and L-alanine joined by a peptide linkage. | dipeptide | metabolite |
| alanylproline | alanylproline: RN given refers to all (L)-isomer | dipeptide; dipeptide zwitterion | metabolite |
| glycylleucine | Gly-Leu : A dipeptide composed of glycine and L-leucine joined by a peptide linkage. | dipeptide; dipeptide zwitterion | metabolite |
| alanyltyrosine | Ala-Tyr : A dipeptide composed of L-alanine and L-tyrosine joined by a peptide linkage. alanyltyrosine: tyrosine source; RN given refers to (L)-isomer | dipeptide | metabolite |
| glycylsarcosine | glycylsarcosine : A dipeptide obtained by formal condensation of the carboxy group of glycine with the amino group of sarcosine. | dipeptide; dipeptide zwitterion | |
| glycylaspartic acid | glycylaspartic acid: RN given refers to (L)-isomer | dipeptide | metabolite |
| histidinoalanine | histidinoalanine: cross-linking amino acid in calcified tissue collagen; RN given refers to (L)-isomer | dipeptide; dipeptide zwitterion | metabolite |
| argiotoxin-636 | argiotoxin-636: from the venom of Argiope aurantia; blocks neuromuscular transmission in insects; structure in first source. | N-acyl-amino acid | |
| 2-amino-3-(3-(carboxymethoxy)-5-methylisoxazol-4-yl)propionic acid | 2-amino-3-(3-(carboxymethoxy)-5-methylisoxazol-4-yl)propionic acid: glutamate receptor antagonist; protects against kainic acid neurotoxicity in cultured cerebral cortex neurons | ||
| 5-fluorowillardiine | 3-(5-fluorouracil-1-yl)-L-alanine : An alanine derivative that is L-alanine bearing a 5-fluorouracil-1-yl substituent at position 3. A more potent and selective AMPA receptor agonist (at hGluR1 and hGluR2) than AMPA itself (Ki = 14.7, 25.1, and 1820 nM for hGluR1, hGluR2 and hGluR5 respectively). 5-fluorowillardiine: a glutamate agonist; RN given for (S)-isomer | L-alanine derivative; non-proteinogenic L-alpha-amino acid; organofluorine compound | AMPA receptor agonist |
| gyki 53655 | GYKI 53655: an AMPA (alpha-amino-3-hydroxy-5-methylisoxazole-4-propionate) receptor antagonist | ||
| ly 293558 | tezampanel: structure given in first source; an AMPA receptor antagonist | ||
| alanylglutamic acid | alanylglutamic acid: RN given refers to (L)-isomer L-alanyl-L-glutamic acid : A dipeptide consisting of L-glutamic acid having an L-alanyl attached to its alpha-amino group | dipeptide | |
| prolyl-tyrosine | Pro-Tyr : A dipeptide formed from L-proline and L-tyrosine residues. prolyl-tyrosine: structure given in first source | dipeptide | metabolite |
| alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid | |||
| 5-bromowillardiine | 5-bromowillardiine: acts as a kainate-like agonist on chick EAA receptors expressed in Xenopus oocytes; RN given refers to (S)-isomer; RN for cpd without isomeric designation not avail 5/91 | ||
| prolylglutamic acid | Pro-Glu : A dipeptide formed from L-proline and L-glutamic acid residues. | dipeptide | metabolite |
| cysteinylglycine | cysteinylglycine: RN given refers to (L)-isomer; RN for cpd without isomeric designation not in Chemlne 7/13/83 L-cysteinylglycine : A dipeptide consisting of glycine having an L-cysteinyl attached to its alpha-amino group. It is an intermediate metabolite in glutathione metabolism. | dipeptide; dipeptide zwitterion | Escherichia coli metabolite; human metabolite; Saccharomyces cerevisiae metabolite |
| willardiine | 3-(uracil-1-yl)-L-alanine : The 3-(uracil-1-yl) derivative of L-alanine. willardiine: isolated from seeds of Acacia willariana; structure | amino acid zwitterion; L-alanine derivative; non-proteinogenic L-alpha-amino acid | |
| aspartyl-aspartic acid | Asp-Asp : A dipeptide formed from two L-aspartic acid units. aspartyl-aspartic acid: do not confuse with cyclo(Asp-Asp) | dipeptide | Mycoplasma genitalium metabolite |
| ly382884 | benzoic acids | ||
| 4-bromohomoibotenic acid, (rs)-isomer | |||
| glycylproline | Gly-Pro : A dipeptide consisting of L-proline having a glycyl residue attached to its alpha-amino group. | dipeptide; dipeptide zwitterion | metabolite |
| 2,3-dioxo-6-nitro-7-sulfamoylbenzo(f)quinoxaline | 2,3-dioxo-6-nitro-7-sulfamoylbenzo(f)quinoxaline: structure given in first source; neuroprotectant for cerebral ischemia; AMPA receptor antagonist | naphthalenes; sulfonic acid derivative | |
| 6-cyano-7-nitroquinoxaline-2,3-dione | 6-Cyano-7-nitroquinoxaline-2,3-dione: A potent excitatory amino acid antagonist with a preference for non-NMDA iontropic receptors. It is used primarily as a research tool. | quinoxaline derivative | |
| fg 9041 | FG 9041: structure given in first source | quinoxaline derivative | |
| seryl-proline | Ser-Pro : A dipeptide formed from L-serine and L-proline residues. | dipeptide | metabolite |
| lofepramine hydrochloride | |||
| phenylalanylalanine | Phe-Ala : A dipeptide formed from L-phenylalanine and L-alanine residues. phenylalanylalanine: RN given refers to (L)-isomer | dipeptide; dipeptide zwitterion | metabolite |
| acetylalanylalanine | acetylalanylalanine: RN given refers to (D)-isomer | ||
| alpha-aspartylalanine | alpha-aspartylalanine: found in pig brain Asp-Ala : A dipeptide formed from L-alpha-aspartyl and L-valine residues. | dipeptide | metabolite |
| alanyltyrosine | Tyr-Ala : A dipeptide formed from L-tyrosine and L-alanine residues. | dipeptide | metabolite |
| ubp 310 | UBP 310: a GluR5 antagonist; structure in first source | ||
| ubp 302 | |||
| prolylglycine | L-prolylglycine : A dipeptide consisting of glycine having an L-prolyl group attached to its alpha-amino nitrogen. prolylglycine: RN given refers to (L)-isomer | dipeptide; dipeptide zwitterion | |
| glutamylalanine | Glu-Ala : A dipeptide formed from L-alpha-glutamyl and L-alanine residues. | dipeptide | metabolite |
| phenylalanylphenylalanine | Phe-Phe : A dipeptide formed from two L-phenylalanine residues. | dipeptide; L-aminoacyl-L-amino acid zwitterion | human blood serum metabolite; Mycoplasma genitalium metabolite |
| phenylalanyl-valine | Val-Phe : A dipeptide formed from L-valine and L-phenylalanine residues. | dipeptide | metabolite |
| alanylglycine | dipeptide; dipeptide zwitterion | metabolite | |
| valyltyrosine | Val-Tyr : A dipeptide formed from L-valine and L-tyrosine residues. valyltyrosine: from sardine muscle hydrolyzate | dipeptide | metabolite |
| phenylalanylproline | Phe-Pro : A dipeptide formed from L-phenylalanine and L-proline residues. | dipeptide | metabolite |
| glycylhistidine | Gly-His : A dipeptide composed of glycine and L-histidine joined by a peptide linkage. glycylhistidine: RN given refers to (L)-isomer | dipeptide; dipeptide zwitterion | metabolite |
| prolyl-serine | Pro-Ser : A dipeptide formed from L-proline and L-serine residues. | dipeptide | metabolite |
| prolylvaline | Val-Pro : A dipeptide formed from L-valine and L-proline residues. | dipeptide | metabolite |
| tqx 173 | |||
| ly 404187 | LY 404187: structure in first source | ||
| 6-azido-7-nitro-1,4-dihydroquinoxaline-2,3-dione | 6-azido-7-nitro-1,4-dihydroquinoxaline-2,3-dione: structure in first source | ||
| 4-ethyl-7-fluoro-3,4-dihydro-2h-1,2,4-benzothiadiazine 1,1-dioxide | 4-ethyl-7-fluoro-3,4-dihydro-2H-1,2,4-benzothiadiazine 1,1-dioxide: an AMPA modulator; structure in first source | ||
| 4-cyclopropyl-7-fluoro-3,4-dihydro-2h-1,2,4-benzothiadiazine 1,1-dioxide | 4-cyclopropyl-7-fluoro-3,4-dihydro-2H-1,2,4-benzothiadiazine 1,1-dioxide: a GluA2 positive allosteric modulator; structure in first source |