Page last updated: 2024-10-24
cyclic nucleotide transport
Definition
Target type: biologicalprocess
The directed movement of a cyclic nucleotide, any nucleotide in which phosphate group is in diester linkage to two positions on the sugar residue, into, out of or within a cell. [GOC:mah, ISBN:0198506732]
Cyclic nucleotide transport is a fundamental biological process that facilitates the movement of cyclic nucleotides, such as cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP), across cellular membranes. These signaling molecules play crucial roles in regulating a wide range of cellular functions, including cell growth, differentiation, metabolism, and neurotransmission.
Cyclic nucleotides are synthesized intracellularly by specific enzymes, such as adenylyl cyclase for cAMP and guanylyl cyclase for cGMP. Once synthesized, they need to be transported across membranes to reach their target receptors and exert their effects. This transport can occur through passive diffusion, facilitated diffusion, or active transport mechanisms.
Passive diffusion is a simple process driven by the concentration gradient, where cyclic nucleotides move from areas of high concentration to low concentration. However, this mechanism is relatively slow and inefficient, and it is not suitable for all cellular contexts.
Facilitated diffusion involves the use of transmembrane proteins, such as cyclic nucleotide-gated channels, to facilitate the movement of cyclic nucleotides across membranes. These channels are highly selective for specific cyclic nucleotides and can be regulated by various factors, including membrane potential, calcium ions, and phosphorylation.
Active transport requires energy expenditure to move cyclic nucleotides against their concentration gradient. This process is typically mediated by specific transporter proteins, such as the multidrug resistance-associated protein (MRP) family. These transporters can bind cyclic nucleotides and use the energy derived from ATP hydrolysis to transport them across membranes.
The precise mechanisms and regulation of cyclic nucleotide transport vary depending on the cell type and the specific cyclic nucleotide involved. In neurons, for example, cAMP transport is essential for signal transduction, and it is regulated by protein kinases, phosphatases, and other signaling molecules. In cardiac muscle cells, cGMP transport is crucial for the regulation of contractility and relaxation.
Overall, cyclic nucleotide transport is a complex and highly regulated process that is critical for cellular signaling and function. Understanding the molecular mechanisms underlying this transport is essential for developing therapeutic strategies targeting cyclic nucleotide signaling pathways in various disease states.'
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Proteins (1)
| Protein | Definition | Taxonomy |
|---|---|---|
| Multidrug resistance-associated protein 1 | A multidrug resistance-associated protein 1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P33527] | Homo sapiens (human) |
Compounds (54)
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| 4-phenyl-3-furoxancarbonitrile | 4-phenyl-3-furoxancarbonitrile : A 1,2,5-oxadiazole substituted by an oxido, cyano and phenyl groups at positions 2, 3 and 4, respectively. It is a vasodilator and inhibitor of platelet aggregation. 4-phenyl-3-furoxancarbonitrile: structure given in first source | 1,2,5-oxadiazole; benzenes; N-oxide; nitrile | geroprotector; nitric oxide donor; platelet aggregation inhibitor; soluble guanylate cyclase activator; vasodilator agent |
| p-aminohippuric acid | p-aminohippurate : A hippurate that is the conjugate base of p-aminohippuric acid, arising from deprotonation of the carboxy group. p-aminohippuric acid : An N-acylglycine that is the 4-amino derivative of hippuric acid; used as a diagnostic agent in the measurement of renal plasma flow. p-Aminohippuric Acid: The glycine amide of 4-aminobenzoic acid. Its sodium salt is used as a diagnostic aid to measure effective renal plasma flow (ERPF) and excretory capacity. | N-acylglycine | Daphnia magna metabolite |
| benzbromarone | benzbromarone : 1-Benzofuran substituted at C-2 and C-3 by an ethyl group and a 3,5-dibromo-4-hydroxybenzoyl group respectively. An inhibitor of CYP2C9, it is used as an anti-gout medication. Benzbromarone: Uricosuric that acts by increasing uric acid clearance. It is used in the treatment of gout. | 1-benzofurans; aromatic ketone | uricosuric drug |
| verapamil | 2-(3,4-dimethoxyphenyl)-5-{[2-(3,4-dimethoxyphenyl)ethyl](methyl)amino}-2-(propan-2-yl)pentanenitrile : A tertiary amino compound that is 3,4-dimethoxyphenylethylamine in which the hydrogens attached to the nitrogen are replaced by a methyl group and a 4-cyano-4-(3,4-dimethoxyphenyl)-5-methylhexyl group. verapamil : A racemate comprising equimolar amounts of dexverapamil and (S)-verapamil. An L-type calcium channel blocker of the phenylalkylamine class, it is used (particularly as the hydrochloride salt) in the treatment of hypertension, angina pectoris and cardiac arrhythmia, and as a preventive medication for migraine. Verapamil: A calcium channel blocker that is a class IV anti-arrhythmia agent. | aromatic ether; nitrile; polyether; tertiary amino compound | |
| indomethacin | indometacin : A member of the class of indole-3-acetic acids that is indole-3-acetic acid in which the indole ring is substituted at positions 1, 2 and 5 by p-chlorobenzoyl, methyl, and methoxy groups, respectively. A non-steroidal anti-inflammatory drug, it is used in the treatment of musculoskeletal and joint disorders including osteoarthritis, rheumatoid arthritis, gout, bursitis and tendinitis. Indomethacin: A non-steroidal anti-inflammatory agent (NSAID) that inhibits CYCLOOXYGENASE, which is necessary for the formation of PROSTAGLANDINS and other AUTACOIDS. It also inhibits the motility of POLYMORPHONUCLEAR LEUKOCYTES. | aromatic ether; indole-3-acetic acids; monochlorobenzenes; N-acylindole | analgesic; drug metabolite; EC 1.14.99.1 (prostaglandin-endoperoxide synthase) inhibitor; environmental contaminant; gout suppressant; non-steroidal anti-inflammatory drug; xenobiotic; xenobiotic metabolite |
| mitoxantrone | mitoxantrone : A dihydroxyanthraquinone that is 1,4-dihydroxy-9,10-anthraquinone which is substituted by 6-hydroxy-1,4-diazahexyl groups at positions 5 and 8. Mitoxantrone: An anthracenedione-derived antineoplastic agent. | dihydroxyanthraquinone | analgesic; antineoplastic agent |
| vincristine | acetate ester; formamides; methyl ester; organic heteropentacyclic compound; organic heterotetracyclic compound; tertiary alcohol; tertiary amino compound; vinca alkaloid | antineoplastic agent; drug; microtubule-destabilising agent; plant metabolite; tubulin modulator | |
| alpha-naphthoflavone | alpha-naphthoflavone : An extended flavonoid resulting from the formal fusion of a benzene ring with the h side of flavone. A synthetic compound, it is an inhibitor of aromatase (EC 1.14.14.14). alpha-naphthoflavone: inhibits P4501A1 and P4501A2; stimulates some activities of P4503A4 | extended flavonoid; naphtho-gamma-pyrone; organic heterotricyclic compound | aryl hydrocarbon receptor agonist; aryl hydrocarbon receptor antagonist; EC 1.14.14.14 (aromatase) inhibitor |
| dehydroepiandrosterone sulfate | dehydroepiandrosterone sulfate : A steroid sulfate that is the 3-sulfooxy derivative of dehydroepiandrosterone. Dehydroepiandrosterone Sulfate: The circulating form of a major C19 steroid produced primarily by the ADRENAL CORTEX. DHEA sulfate serves as a precursor for TESTOSTERONE; ANDROSTENEDIONE; ESTRADIOL; and ESTRONE. | 17-oxo steroid; steroid sulfate | EC 2.7.1.33 (pantothenate kinase) inhibitor; human metabolite; mouse metabolite |
| vinblastine | |||
| daunorubicin | anthracycline : Anthracyclines are polyketides that have a tetrahydronaphthacenedione ring structure attached by a glycosidic linkage to the amino sugar daunosamine. daunorubicin : A natural product found in Actinomadura roseola. Daunorubicin: A very toxic anthracycline aminoglycoside antineoplastic isolated from Streptomyces peucetius and others, used in treatment of LEUKEMIA and other NEOPLASMS. | aminoglycoside antibiotic; anthracycline; p-quinones; tetracenequinones | antineoplastic agent; bacterial metabolite |
| cefadroxil anhydrous | cefadroxil : A cephalosporin bearing methyl and (2R)-2-amino-2-(4-hydroxyphenyl)acetamido groups at positions 3 and 7, respectively, of the cephem skeleton. Cefadroxil: Long-acting, broad-spectrum, water-soluble, CEPHALEXIN derivative. | cephalosporin | antibacterial drug |
| fluorexon | fluorexon: structure | xanthene dye | fluorochrome |
| glutathione disulfide | Glutathione Disulfide: A GLUTATHIONE dimer formed by a disulfide bond between the cysteine sulfhydryl side chains during the course of being oxidized. | glutathione derivative; organic disulfide | Escherichia coli metabolite; mouse metabolite |
| dexverapamil | dexverapamil : A 2-(3,4-dimethoxyphenyl)-5-{[2-(3,4-dimethoxyphenyl)ethyl](methyl)amino}-2-(propan-2-yl)pentanenitrile that has R configuration. It competitively inhibits the multidrug resistance efflux pump P-glycoprotein (MDR-1, EC 3.6.3.44), thereby potentially increasing the effectiveness of a wide range of antineoplastic drugs which are inactivated by MDR-1 mechanisms. Dexverapamil exhibits lower calcium antagonistic activity and toxicity than racemic verapamil. | 2-(3,4-dimethoxyphenyl)-5-{[2-(3,4-dimethoxyphenyl)ethyl](methyl)amino}-2-(propan-2-yl)pentanenitrile | EC 3.6.3.44 (xenobiotic-transporting ATPase) inhibitor |
| estradiol-3-sulfate | 17beta-estradiol 3-sulfate : A steroid sulfate obtained by the formal condensation of sulfuric acid with the 3-hydroxy group of 17beta-estradiol. estradiol-3-sulfate: RN given refers to (17beta)-isomer | 17beta-hydroxy steroid; steroid sulfate | mammalian metabolite |
| sulfolithocholylglycine | sulfoglycolithocholic acid : The 3-O-sulfo derivative of glycolithocholic acid. | bile acid glycine conjugate; steroid sulfate | |
| hernandezine | hernandezine: from Thalictrum glandulosissimum; structure given in first source; RN given refers to (1beta)-isomer; RN for cpd without isomeric designation not avail 3/91 | bisbenzylisoquinoline alkaloid; isoquinolines | |
| lekoptin | (S)-verapamil : A 2-(3,4-dimethoxyphenyl)-5-{[2-(3,4-dimethoxyphenyl)ethyl](methyl)amino}-2-(propan-2-yl)pentanenitrile that has S configuration. | 2-(3,4-dimethoxyphenyl)-5-{[2-(3,4-dimethoxyphenyl)ethyl](methyl)amino}-2-(propan-2-yl)pentanenitrile | |
| 3,5,7,3',4'-pentamethoxyflavone | 3,5,7,3',4'-pentamethoxyflavone: causes relaxation of cavernosum; structure in first source | ||
| sr141716 | amidopiperidine; carbohydrazide; dichlorobenzene; monochlorobenzenes; pyrazoles | anti-obesity agent; appetite depressant; CB1 receptor antagonist | |
| fluo-3 | Fluo-3: fluorescent Ca(2+) indicator; permits continuous monitoring of Ca without interference with use of UV-sensitive caged compounds | xanthene dye | fluorochrome |
| elacridar | Elacridar: inhibitor of MDR1 PROTEIN; structure given in first source | ||
| methotrexate | dicarboxylic acid; monocarboxylic acid amide; pteridines | abortifacient; antimetabolite; antineoplastic agent; antirheumatic drug; dermatologic drug; DNA synthesis inhibitor; EC 1.5.1.3 (dihydrofolate reductase) inhibitor; immunosuppressive agent | |
| tariquidar | benzamides | ||
| 4-methyl-3-(phenylsulfonyl)furoxan | 4-methyl-3-(phenylsulfonyl)furoxan: structure given in first source; a human guanylate cyclase activator | ||
| etravirine | aminopyrimidine; aromatic ether; dinitrile; organobromine compound | antiviral agent; HIV-1 reverse transcriptase inhibitor | |
| 3',4'-dimethoxy-alpha-naphthoflavone | 3',4'-dimethoxy-alpha-naphthoflavone: activated Ah receptor; structure in first source | ||
| naringenin | (S)-naringenin : The (S)-enantiomer of naringenin. | (2S)-flavan-4-one; naringenin | expectorant; plant metabolite |
| reversan | reversan: inhibits multidrug resistance-associated protein 1 | ||
| estrone sulfate | estrone sulfate: sulfoconjugated estrone; RN given refers to parent cpd | 17-oxo steroid; steroid sulfate | human metabolite; mouse metabolite |
| biricodar | biricodar: a non-macrocyclic ligand for FKBP12; structure in first source | alpha-amino acid ester | |
| quercetin | 7-hydroxyflavonol; pentahydroxyflavone | antibacterial agent; antineoplastic agent; antioxidant; Aurora kinase inhibitor; chelator; EC 1.10.99.2 [ribosyldihydronicotinamide dehydrogenase (quinone)] inhibitor; geroprotector; phytoestrogen; plant metabolite; protein kinase inhibitor; radical scavenger | |
| apigenin | Chamomile: Common name for several daisy-like plants (MATRICARIA; TRIPLEUROSPERMUM; ANTHEMIS; CHAMAEMELUM) native to Europe and Western Asia, now naturalized in the United States and Australia. | trihydroxyflavone | antineoplastic agent; metabolite |
| chrysoeriol | 4',5,7-trihydroxy-3'-methoxyflavone : The 3'-O-methyl derivative of luteolin. chrysoeriol: isolated from leaves of Eurya japonica & E. emarginata | monomethoxyflavone; trihydroxyflavone | antineoplastic agent; antioxidant; metabolite |
| ayanin | 3',5-dihydroxy-3,4',7-trimethoxyflavone : A trimethoxyflavone that is quercetin in which the hydroxy groups at positions 3, 4' and 7 have been replaced by methoxy groups. ayanin: has cytoprotective and anti-neuroinflammatory activities; isolated from Croton schiedeanus (Euphorbiaceae); structure in first source | dihydroxyflavone; trimethoxyflavone | plant metabolite |
| kaempferol | 7-hydroxyflavonol; flavonols; tetrahydroxyflavone | antibacterial agent; geroprotector; human blood serum metabolite; human urinary metabolite; human xenobiotic metabolite; plant metabolite | |
| diosmetin | 3'-hydroxyflavonoid; monomethoxyflavone; trihydroxyflavone | angiogenesis inhibitor; anti-inflammatory agent; antineoplastic agent; antioxidant; apoptosis inducer; bone density conservation agent; cardioprotective agent; plant metabolite; tropomyosin-related kinase B receptor agonist; vasodilator agent | |
| myricetin | 7-hydroxyflavonol; hexahydroxyflavone | antineoplastic agent; antioxidant; cyclooxygenase 1 inhibitor; food component; geroprotector; hypoglycemic agent; plant metabolite | |
| robinetin | robinetin : A pentahydroxyflavone that is flavone substituted by hydroxy groups at positions 3, 7, 3, 4' and 5'. robinetin: structure given in first source | 7-hydroxyflavonol; pentahydroxyflavone | plant metabolite |
| sdz psc 833 | valspodar: nonimmunosuppressive cyclosporin analog which is a potent multidrug resistance modifier; 7-10 fold more potent than cyclosporin A; a potent P glycoprotein inhibitor; MW 1215 | homodetic cyclic peptide | |
| estradiol-17 beta-glucuronide | 17beta-estradiol 17-glucosiduronic acid : A steroid glucosiduronic acid that consists of 17beta-estradiol having a beta-glucuronyl residue attached at position 17 via a glycosidic linkage. | 3-hydroxy steroid; steroid glucosiduronic acid | |
| l 660,711 | quinolines | ||
| cyclosporine | ramihyphin A: one of the metabolites produced by Fusarium sp. S-435; RN given refers to cpd with unknown MF | homodetic cyclic peptide | anti-asthmatic drug; anticoronaviral agent; antifungal agent; antirheumatic drug; carcinogenic agent; dermatologic drug; EC 3.1.3.16 (phosphoprotein phosphatase) inhibitor; geroprotector; immunosuppressive agent; metabolite |
| licochalcone a | licochalcone A: has both anti-inflammatory and antineoplastic activities; structure given in first source; isolated from root of Glycyrrhiza inflata; RN given refers to (E)-isomer | chalcones | |
| 5-hydroxy-3,3',4',7-tetramethoxyflavone | 5-hydroxy-3,3',4',7-tetramethoxyflavone : A monohydroxyflavone that is 5-hydroxyflavone which is substituted by methoxy groups at positions 3,3',4' and 7. 5-hydroxy-3,7,3',4'-tetramethoxyflavone: from the rhizome of Kaempferia parviflora; inhibits monocyte adhesion and cellular reactive oxygen species production in human umbilical vein endothelial cells | 3'-methoxyflavones; monohydroxyflavone; tetramethoxyflavone | plant metabolite |
| 2,3-dehydrosilybin | dehydrosilybin: inhibits cytochrome P450 1A1 catalytic activity; structure in first source | flavonolignan | |
| verlukast | verlukast: LTD4 receptor antagonist | ||
| 4-ethoxy-3-phenylsulfonylfuroxan | |||
| ko 143 | beta-carbolines; tert-butyl ester | ||
| wk-x-34 | WK-X-34: inhibitor of P-glycoprotein and BCRP (breast cancer resistance protein); structure in first source | ||
| mk 0571 | |||
| bms 754807 | BMS 754807: an IGR-1R kinase inhibitor; structure in first source | pyrazoles; pyridines; pyrrolidines; pyrrolotriazine | antineoplastic agent; EC 2.7.10.1 (receptor protein-tyrosine kinase) inhibitor |
| gs-9451 |