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ATPase-coupled monoatomic cation transmembrane transporter activity

Definition

Target type: molecularfunction

Enables the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: ATP + H2O + cation(out) = ADP + phosphate + cation(in). [GOC:ai]

ATPase-coupled monoatomic cation transmembrane transporter activity involves the movement of single atom cations across a cell membrane using energy derived from ATP hydrolysis. This process is essential for maintaining cellular ion gradients, which are crucial for various cellular functions, including nerve impulse transmission, muscle contraction, and nutrient uptake.

The mechanism typically involves a multi-step process:

1. **Binding:** The transporter protein binds to the cation on one side of the membrane.
2. **Conformational Change:** ATP hydrolysis triggers a conformational change in the transporter protein, exposing the bound cation to the other side of the membrane.
3. **Release:** The cation is released on the other side of the membrane.
4. **Reset:** The transporter protein returns to its original conformation, ready for another cycle.

Specific examples of ATPase-coupled monoatomic cation transmembrane transporters include:

* **Sodium-potassium pump:** Transports three sodium ions out of the cell and two potassium ions into the cell, contributing to the resting membrane potential and facilitating nerve impulse transmission.
* **Calcium pump:** Transports calcium ions from the cytoplasm into the sarcoplasmic reticulum in muscle cells, regulating muscle contraction.
* **Proton pump:** Transports protons across the mitochondrial membrane, contributing to ATP synthesis.

These transporters are highly specific for their substrates, ensuring the precise movement of ions across the membrane and maintaining cellular homeostasis.
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Proteins (6)

ProteinDefinitionTaxonomy
ATP-sensitive inward rectifier potassium channel 8An ATP-sensitive inward rectifier potassium channel 8 that is encoded in the genome of human. [PRO:WCB, UniProtKB:Q15842]Homo sapiens (human)
ATP-sensitive inward rectifier potassium channel 11An ATP-sensitive inward rectifier potassium channel 11 that is encoded in the genome of human. [PRO:WCB, UniProtKB:Q14654]Homo sapiens (human)
Sodium/potassium-transporting ATPase subunit alpha-4A sodium/potassium-transporting ATPase subunit alpha-4 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q13733]Homo sapiens (human)
ATP-binding cassette sub-family C member 8An ATP-binding cassette sub-family C member 8 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q09428]Homo sapiens (human)
Sodium/potassium-transporting ATPase subunit alpha-2A sodium/potassium-transporting ATPase subunit alpha-2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P50993]Homo sapiens (human)
ATP-binding cassette sub-family C member 9An ATP-binding cassette sub-family C member 9 that is encoded in the genome of human. [PRO:DNx, UniProtKB:O60706]Homo sapiens (human)

Compounds (33)

CompoundDefinitionClassesRoles
diazoxidediazoxide : A benzothiadiazine that is the S,S-dioxide of 2H-1,2,4-benzothiadiazine which is substituted at position 3 by a methyl group and at position 7 by chlorine. A peripheral vasodilator, it increases the concentration of glucose in the plasma and inhibits the secretion of insulin by the beta- cells of the pancreas. It is used orally in the management of intractable hypoglycaemia and intravenously in the management of hypertensive emergencies.

Diazoxide: A benzothiadiazine derivative that is a peripheral vasodilator used for hypertensive emergencies. It lacks diuretic effect, apparently because it lacks a sulfonamide group.
benzothiadiazine;
organochlorine compound;
sulfone
antihypertensive agent;
beta-adrenergic agonist;
bronchodilator agent;
cardiotonic drug;
diuretic;
K-ATP channel agonist;
sodium channel blocker;
sympathomimetic agent;
vasodilator agent
glyburideglyburide : An N-sulfonylurea that is acetohexamide in which the acetyl group is replaced by a 2-(5-chloro-2-methoxybenzamido)ethyl group.

Glyburide: An antidiabetic sulfonylurea derivative with actions like those of chlorpropamide
monochlorobenzenes;
N-sulfonylurea
anti-arrhythmia drug;
EC 2.7.1.33 (pantothenate kinase) inhibitor;
EC 3.6.3.49 (channel-conductance-controlling ATPase) inhibitor;
hypoglycemic agent
lansoprazoleLansoprazole: A 2,2,2-trifluoroethoxypyridyl derivative of timoprazole that is used in the therapy of STOMACH ULCERS and ZOLLINGER-ELLISON SYNDROME. The drug inhibits H(+)-K(+)-EXCHANGING ATPASE which is found in GASTRIC PARIETAL CELLS. Lansoprazole is a racemic mixture of (R)- and (S)-isomers.benzimidazoles;
pyridines;
sulfoxide
anti-ulcer drug;
EC 3.6.3.10 (H(+)/K(+)-exchanging ATPase) inhibitor
omeprazole5-methoxy-2-{[(4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl}-1H-benzimidazole : A member of the class of benzimidazoles that is 1H-benzimidazole which is substituted by a [4-methoxy-3,5-dimethylpyridin-2-yl)methyl]sulfinyl group at position 2 and a methoxy group at position 5.

omeprazole : A racemate comprising equimolar amounts of (R)- and (S)-omeprazole.

Omeprazole: A 4-methoxy-3,5-dimethylpyridyl, 5-methoxybenzimidazole derivative of timoprazole that is used in the therapy of STOMACH ULCERS and ZOLLINGER-ELLISON SYNDROME. The drug inhibits an H(+)-K(+)-EXCHANGING ATPASE which is found in GASTRIC PARIETAL CELLS.
aromatic ether;
benzimidazoles;
pyridines;
sulfoxide
pantoprazolepantoprazole : A member of the class of benzimidazoles that is 1H-benzimidazole substituted by a difluoromethoxy group at position 5 and a [(3,4-dimethoxypyridin-2-yl)methyl]sulfinyl group at position 2.

Pantoprazole: 2-pyridinylmethylsulfinylbenzimidazole proton pump inhibitor that is used in the treatment of GASTROESOPHAGEAL REFLUX and PEPTIC ULCER.
aromatic ether;
benzimidazoles;
organofluorine compound;
pyridines;
sulfoxide
anti-ulcer drug;
EC 3.6.3.10 (H(+)/K(+)-exchanging ATPase) inhibitor;
environmental contaminant;
xenobiotic
pinacidilPinacidil: A guanidine that opens POTASSIUM CHANNELS producing direct peripheral vasodilatation of the ARTERIOLES. It reduces BLOOD PRESSURE and peripheral resistance and produces fluid retention. (Martindale The Extra Pharmacopoeia, 31st ed)pyridines
propafenonepropafenone : An aromatic ketone that is 3-(propylamino)propane-1,2-diol in which the hydrogen of the primary hydroxy group is replaced by a 2-(3-phenylpropanoyl)phenyl group. It is a class 1C antiarrhythmic drug with local anesthetic effects, and is used as the hydrochloride salt in the management of supraventricular and ventricular arrhythmias.

Propafenone: An antiarrhythmia agent that is particularly effective in ventricular arrhythmias. It also has weak beta-blocking activity.
aromatic ketone;
secondary alcohol;
secondary amino compound
anti-arrhythmia drug
troglitazoneTroglitazone: A chroman and thiazolidinedione derivative that acts as a PEROXISOME PROLIFERATOR-ACTIVATED RECEPTORS (PPAR) agonist. It was formerly used in the treatment of TYPE 2 DIABETES MELLITUS, but has been withdrawn due to hepatotoxicity.chromanes;
thiazolidinone
anticoagulant;
anticonvulsant;
antineoplastic agent;
antioxidant;
EC 6.2.1.3 (long-chain-fatty-acid--CoA ligase) inhibitor;
ferroptosis inhibitor;
hypoglycemic agent;
platelet aggregation inhibitor;
vasodilator agent
digoxigenindigoxigenin : A hydroxy steroid that consists of 5beta-cardanolide having a double bond at the 20(22)-position as well as hydroxy groups at the 3beta-, 12beta- and 14beta-positions. It has been isolated from the plant species of the genus Digitalis.

Digoxigenin: 3 beta,12 beta,14-Trihydroxy-5 beta-card-20(22)-enolide. A cardenolide which is the aglycon of digoxin. Can be obtained by hydrolysis of digoxin or from Digitalis orientalis L. and Digitalis lanata Ehrh.
12beta-hydroxy steroid;
14beta-hydroxy steroid;
3beta-hydroxy steroid;
3beta-sterol
hapten;
plant metabolite
n-cyano-n'-(1,1-dimethylpropyl)-n''-(3-pyridinyl)guanidineN-cyano-N'-(1,1-dimethylpropyl)-N''-(3-pyridinyl)guanidine: potassium channel openerpyridines
repaglinidepiperidines
cromakalimCromakalim: A potassium-channel opening vasodilator that has been investigated in the management of hypertension. It has also been tried in patients with asthma. (Martindale, The Extra Pharmacopoeia, 30th ed, p352)
rosiglitazoneaminopyridine;
thiazolidinediones
EC 6.2.1.3 (long-chain-fatty-acid--CoA ligase) inhibitor;
ferroptosis inhibitor;
insulin-sensitizing drug
digoxigenin-bis(digitoxoside)cardenolide glycoside
mk 7675-((2,4-dioxo-5-thiazolidinyl)methyl)-2-methoxy-N-((4-(trifluoromethyl)phenyl)methyl)benzamide: an antihyperlipidemic agent that also functions as an insulin sensitizer, PPARalpha agonist, and PPARgamma agonist; structure in first source
rostafuroxinrostafuroxin: structure in first source
zeneca zd 6169Zeneca ZD 6169: an ATP-sensitive potassium channel opener; structure given in first source
ouabaincardiac glycoside : Steroid lactones containing sugar residues that act on the contractile force of the cardiac muscles.

ouabain : A steroid hormone that is a multi-hydroxylated alpha-L-rhamnosyl cardenoloide. It binds to and inhibits the plasma membrane Na(+)/K(+)-ATPase (sodium pump). It has been isolated naturally from Strophanthus gratus.

Ouabain: A cardioactive glycoside consisting of rhamnose and ouabagenin, obtained from the seeds of Strophanthus gratus and other plants of the Apocynaceae; used like DIGITALIS. It is commonly used in cell biological studies as an inhibitor of the NA(+)-K(+)-EXCHANGING ATPASE.
11alpha-hydroxy steroid;
14beta-hydroxy steroid;
5beta-hydroxy steroid;
alpha-L-rhamnoside;
cardenolide glycoside;
steroid hormone
anti-arrhythmia drug;
cardiotonic drug;
EC 2.3.3.1 [citrate (Si)-synthase] inhibitor;
EC 3.1.3.41 (4-nitrophenylphosphatase) inhibitor;
EC 3.6.3.10 (H(+)/K(+)-exchanging ATPase) inhibitor;
EC 3.6.3.9 (Na(+)/K(+)-transporting ATPase) inhibitor;
ion transport inhibitor;
plant metabolite
digitoxindigitoxin : A cardenolide glycoside in which the 3beta-hydroxy group of digitoxigenin carries a 2,6-dideoxy-beta-D-ribo-hexopyranosyl-(1->4)-2,6-dideoxy-beta-D-ribo-hexopyranosyl-(1->4)-2,6-dideoxy-beta-D-ribo-hexopyranosyl trisaccharide chain.

Digitoxin: A cardiac glycoside sometimes used in place of DIGOXIN. It has a longer half-life than digoxin; toxic effects, which are similar to those of digoxin, are longer lasting. (From Martindale, The Extra Pharmacopoeia, 30th ed, p665)
cardenolide glycosideEC 3.6.3.9 (Na(+)/K(+)-transporting ATPase) inhibitor
cromakalim1-benzopyran
digoxindigoxin : A cardenolide glycoside that is digitoxin beta-hydroxylated at C-12. A cardiac glycoside extracted from the foxglove plant, Digitalis lanata, it is used to control ventricular rate in atrial fibrillation and in the management of congestive heart failure with atrial fibrillation, but the margin between toxic and therapeutic doses is small.

Digoxin: A cardiotonic glycoside obtained mainly from Digitalis lanata; it consists of three sugars and the aglycone DIGOXIGENIN. Digoxin has positive inotropic and negative chronotropic activity. It is used to control ventricular rate in ATRIAL FIBRILLATION and in the management of congestive heart failure with atrial fibrillation. Its use in congestive heart failure and sinus rhythm is less certain. The margin between toxic and therapeutic doses is small. (From Martindale, The Extra Pharmacopoeia, 30th ed, p666)
cardenolide glycoside;
steroid saponin
anti-arrhythmia drug;
cardiotonic drug;
EC 3.6.3.9 (Na(+)/K(+)-transporting ATPase) inhibitor;
epitope
clamikalantclamikalant: inhibits ATP-sensitive potassium channel; structure in first source
digitoxigenindigitoxigenin : A 5beta-cardenolide that is 5beta-cardanolide with hydroxy substituents at the 3beta- and 14beta-positions and double bond unsaturation at C(20)-C(22).

Digitoxigenin: 3 beta,14-Dihydroxy-5 beta-card-20(22)enolide. A cardenolide which is the aglycon of digitoxin. Synonyms: Cerberigenin; Echujetin; Evonogenin; Thevetigenin.
14beta-hydroxy steroid;
3beta-hydroxy steroid
zm226600ZM226600: an ATP-sensitive potassium channel opener; structure in first sourceanilide
way 133537
ly 465608LY 465608: a nonthiazolidinedione agonist of both PPAR-alpha and PPAR-gamma of Ligand Pharm. and Eli Lilly
bm 131246
phakellistatin 2phakellistatin 2: isolated from the marine sponge Phakellia carteri; structure in first source
digitoxigenin monodigitoxosidedigitoxigenin monodigitoxoside: RN given refers to (ribo-3beta,5beta)-isomer
evomonosideevomonoside : A cardenolide glycoside consisting of digitoxigenin having an alpha-L-rhamnosyl moiety attached at the O(3)-position.

evomonoside: a cytotoxic cardiac glycoside from Lepidium apetalum; RN refers to (3beta,5beta)-isomer
cardenolide glycoside
halisulfate 1halisulfate 1: an isocitrate lyase inhibitor sesterterpene sulfate from sponge, Hippospongia sp.; structure in first sourceorganic molecular entitymetabolite
nn 414NN 414: a hypoglycemic agent with insulin release modulating and potassium channel activating activities; structure in first source
7-chloro-3-isopropylamino-4h-1,2,4-benzothiadiazine 1,1-dioxide7-chloro-3-isopropylamino-4H-1,2,4-benzothiadiazine 1,1-dioxide: activates ATP-sensitive potassium channels; structure in first source