Target type: biologicalprocess
Any process that modulates the rate, frequency, or extent of ribonuclease activity, catalysis of the hydrolysis of phosphodiester bonds in chains of RNA. [GOC:dph, GOC:tb]
Ribonucleases (RNases) are enzymes that degrade RNA molecules. Their activity is tightly regulated to ensure proper gene expression and prevent cellular damage. Regulation of RNase activity occurs at multiple levels, including:
* **Transcriptional Control:** The expression of RNase genes is regulated by transcription factors and other regulatory elements. This ensures that the appropriate levels of RNases are produced at the right time and place.
* **Post-Transcriptional Control:** After transcription, RNase transcripts can be subjected to post-transcriptional modifications, such as splicing and polyadenylation. These modifications can affect the stability, translation, and localization of RNase mRNAs.
* **Translation Control:** The translation of RNase mRNAs can be regulated by factors that bind to the 5' cap or the 3' untranslated region (UTR) of the mRNA. This can affect the rate of protein synthesis.
* **Protein Folding and Assembly:** The proper folding and assembly of RNase proteins are essential for their activity. Chaperone proteins assist in this process.
* **Post-Translational Modifications:** After translation, RNases can be modified by phosphorylation, glycosylation, or other post-translational modifications. These modifications can affect the activity, stability, and localization of the RNases.
* **Interaction with Cofactors and Substrates:** RNases often require cofactors, such as metal ions, to be active. The availability of these cofactors can regulate RNase activity. The binding of substrates to RNases can also modulate their activity.
* **Inhibition by Specific Proteins:** Some proteins act as specific inhibitors of RNases. These inhibitors bind to the active site or other regions of the RNases, blocking their activity.
* **Cellular Localization:** The localization of RNases within the cell is important for their function. RNases can be targeted to specific organelles or compartments, where they degrade specific RNA substrates.
* **Regulation by Cellular Signaling Pathways:** RNase activity can be regulated by cellular signaling pathways, such as the stress response pathway. This ensures that RNase activity is appropriately adjusted in response to changes in the cellular environment.
The specific mechanisms of RNase regulation vary depending on the type of RNase and the cellular context. However, all of these mechanisms contribute to the precise control of RNase activity, which is essential for maintaining cellular homeostasis and ensuring proper gene expression.'
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| Protein | Definition | Taxonomy |
|---|---|---|
| cGMP-inhibited 3',5'-cyclic phosphodiesterase A | A cGMP-inhibited 3,5-cyclic phosphodiesterase 3A that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q14432] | Homo sapiens (human) |
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| my 5445 | MY 5445: potential platelet aggregation inhibitor | pyridazines; ring assembly | |
| theophylline | dimethylxanthine | adenosine receptor antagonist; anti-asthmatic drug; anti-inflammatory agent; bronchodilator agent; drug metabolite; EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; fungal metabolite; human blood serum metabolite; immunomodulator; muscle relaxant; vasodilator agent | |
| cilostamide | cilostamide: selective inhibitor of cyclic AMP phosphodiesterase & platelet aggregation; structure | quinolines | |
| cilostazol | lactam; tetrazoles | anticoagulant; bronchodilator agent; EC 3.1.4.17 (3',5'-cyclic-nucleotide phosphodiesterase) inhibitor; fibrin modulating drug; neuroprotective agent; platelet aggregation inhibitor; vasodilator agent | |
| dipyridamole | dipyridamole : A pyrimidopyrimidine that is 2,2',2'',2'''-(pyrimido[5,4-d]pyrimidine-2,6-diyldinitrilo)tetraethanol substituted by piperidin-1-yl groups at positions 4 and 8 respectively. A vasodilator agent, it inhibits the formation of blood clots. Dipyridamole: A phosphodiesterase inhibitor that blocks uptake and metabolism of adenosine by erythrocytes and vascular endothelial cells. Dipyridamole also potentiates the antiaggregating action of prostacyclin. (From AMA Drug Evaluations Annual, 1994, p752) | piperidines; pyrimidopyrimidine; tertiary amino compound; tetrol | adenosine phosphodiesterase inhibitor; EC 3.5.4.4 (adenosine deaminase) inhibitor; platelet aggregation inhibitor; vasodilator agent |
| 9-(2-hydroxy-3-nonyl)adenine | 9-(2-hydroxy-3-nonyl)adenine: specific inhibitor of adenosine deaminase | ||
| etazolate | etazolate : A pyrazolopyridine that is 1H-pyrazolo[3,4-b]pyridine which is substituted at positions 1, 4, and 5 by ethyl, 2-isopropylidenehydrazino, and ethoxycarbonyl groups, respectively. A phosphodiesterase IV inhibitor with antidepressant and anxiolytic properties. Etazolate: A potent phosphodiesterase inhibitor proposed as an antipsychotic agent. | ethyl ester; hydrazone; pyrazolopyridine | alpha-secretase activator; antidepressant; antipsychotic agent; anxiolytic drug; GABA agent; neuroprotective agent; phosphodiesterase IV inhibitor |
| ibudilast | pyrazolopyridine | ||
| amrinone | amrinone : A 3,4'-bipyridine substituted at positions 5 and 6 by an amino group and a keto function respectively. A pyridine phosphodiesterase 3 inhibitor, it is a drug that may improve the prognosis in patients with congestive heart failure. Amrinone: A positive inotropic cardiotonic (CARDIOTONIC AGENTS) with vasodilator properties, phosphodiesterase 3 inhibitory activity, and the ability to stimulate calcium ion influx into the cardiac cell. | bipyridines | EC 3.1.4.* (phosphoric diester hydrolase) inhibitor |
| 1-methyl-3-isobutylxanthine | 1-Methyl-3-isobutylxanthine: A potent cyclic nucleotide phosphodiesterase inhibitor; due to this action, the compound increases cyclic AMP and cyclic GMP in tissue and thereby activates CYCLIC NUCLEOTIDE-REGULATED PROTEIN KINASES 3-isobutyl-1-methylxanthine : An oxopurine that is xanthine which is substituted at positions 1 and 3 by methyl and isobutyl groups, respectively. | 3-isobutyl-1-methylxanthine | |
| losartan | losartan : A biphenylyltetrazole where a 1,1'-biphenyl group is attached at the 5-position and has an additional trisubstituted imidazol-1-ylmethyl group at the 4'-position Losartan: An antagonist of ANGIOTENSIN TYPE 1 RECEPTOR with antihypertensive activity due to the reduced pressor effect of ANGIOTENSIN II. | biphenylyltetrazole; imidazoles | angiotensin receptor antagonist; anti-arrhythmia drug; antihypertensive agent; endothelin receptor antagonist |
| 2-(4-morpholinyl)-8-phenyl-4h-1-benzopyran-4-one | 2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-one: specific inhibitor of phosphatidylinositol 3-kinase; structure in first source | chromones; morpholines; organochlorine compound | autophagy inhibitor; EC 2.7.1.137 (phosphatidylinositol 3-kinase) inhibitor; geroprotector |
| milrinone | bipyridines; nitrile; pyridone | cardiotonic drug; EC 3.1.4.17 (3',5'-cyclic-nucleotide phosphodiesterase) inhibitor; platelet aggregation inhibitor; vasodilator agent | |
| papaverine | papaverine : A benzylisoquinoline alkaloid that is isoquinoline substituted by methoxy groups at positions 6 and 7 and a 3,4-dimethoxybenzyl group at position 1. It has been isolated from Papaver somniferum. Papaverine: An alkaloid found in opium but not closely related to the other opium alkaloids in its structure or pharmacological actions. It is a direct-acting smooth muscle relaxant used in the treatment of impotence and as a vasodilator, especially for cerebral vasodilation. The mechanism of its pharmacological actions is not clear, but it apparently can inhibit phosphodiesterases and it may have direct actions on calcium channels. | benzylisoquinoline alkaloid; dimethoxybenzene; isoquinolines | antispasmodic drug; vasodilator agent |
| pentoxifylline | oxopurine | ||
| proxyphylline | oxopurine | ||
| 4-(3-butoxy-4-methoxybenzyl)-2-imidazolidinone | 4-(3-Butoxy-4-methoxybenzyl)-2-imidazolidinone: Inhibitor of phosphodiesterases. | methoxybenzenes | |
| rolipram | pyrrolidin-2-ones | antidepressant; EC 3.1.4.* (phosphoric diester hydrolase) inhibitor | |
| sulmazole | sulmazole : An imidazopyridine that is 1H-imidazo[4,5-b]pyridine which is substituted at position 2 by a 2-methoxy-4-(methylsulfinyl)phenyl group. An A1 adenosine receptor antagonist, it was formerly used as a cardiotonic agent. sulmazole: structure given in first source | imidazopyridine; sulfoxide | adenosine A1 receptor antagonist; cardiotonic drug; EC 3.1.4.* (phosphoric diester hydrolase) inhibitor |
| trequinsin | trequinsin: RN given refers to parent cpd; structure given in first source | pyridopyrimidine | |
| vesnarinone | organic molecular entity | ||
| zardaverine | zardaverine : A pyridazinone derivative in which pyridazin-3(2H)-one is substituted at C-6 with a 4-(difluoromethoxy)-3-methoxyphenyl group. It is a phosphodiesterase inhibitor, selective for PDE3 and 4. zardaverine: structure given in first source | organofluorine compound; pyridazinone | anti-asthmatic drug; bronchodilator agent; EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; peripheral nervous system drug |
| 9-benzyladenine | |||
| eg 626 | phthalazinol: RN given refers to parent cpd; do not confuse with phthalazinol: 62054-23-3; thromboxane A2 antagonist | phthalazines | |
| enoximone | Enoximone: A selective phosphodiesterase inhibitor with vasodilating and positive inotropic activity that does not cause changes in myocardial oxygen consumption. It is used in patients with CONGESTIVE HEART FAILURE. | aromatic ketone | |
| piroximone | piroximone: structure in first source | ||
| 2-(2-methoxy-4-(methylsulfinyl)phenyl)-1h-imidazo(4,5-c)pyridine | 2-(2-methoxy-4-(methylsulfinyl)phenyl)-1H-imidazo(4,5-c)pyridine: RN & structure given in first source; RN given refers to parent cpd; closely related to sulmazole | imidazoles | |
| imazodan | imazodan: RN & structure given in first source; | ||
| nitraquazone | nitraquazone: structure given in first source | ||
| tadalafil | benzodioxoles; pyrazinopyridoindole | EC 3.1.4.35 (3',5'-cyclic-GMP phosphodiesterase) inhibitor; vasodilator agent | |
| y 590 | |||
| 9-(2-hydroxy-3-nonyl)adenine | (2R,3S)-EHNA : EHNA of absolute configuration 2R,3S. Selective inhibitor of cGMP-stimulated phosphodiesterase (PDE2) (IC50 = 0.8 - 4 mM). Also a potent inhibitor of adenosine deaminase. | EHNA | EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; EC 3.5.4.4 (adenosine deaminase) inhibitor |
| 9-(2-hydroxy-3-nonyl)adenine | (2S,3R)-EHNA : EHNA of absolute configuration 2S,3R. | EHNA | |
| cilomilast | methoxybenzenes | ||
| 8-methoxymethyl-3-isobutyl-1-methylxanthine | 8-methoxymethyl-3-isobutyl-1-methylxanthine: inhibitor of phosphodiesterase I | oxopurine | |
| vinpocetine | vinpocetine: whole issue of Arzneim Forsch (23 articles) discuss this drug; Arzneim Forsch 26(10a);1976; RN given refers to parent cpd with unspecified isomeric designation | alkaloid | geroprotector |
| rolipram | (-)-rolipram : The (R)-enantiomer of rolipram. | rolipram | |
| roflumilast | aromatic ether; benzamides; chloropyridine; cyclopropanes; organofluorine compound | anti-asthmatic drug; phosphodiesterase IV inhibitor | |
| 4,5-dihydro-6-(4-(imidazol-1-yl)phenyl)-5-methyl-3(2h)-pyridazinone | 4,5-dihydro-6-(4-(imidazol-1-yl)phenyl)-5-methyl-3(2H)-pyridazinone: RN & structure given in first source | ||
| indolidan | indolidan: structure given in first source | ||
| bemoradan | bemoradan: RN & structure given in first source | ||
| 1,3-dihydro-7,8-dimethyl-2h-imidazo(4,5-b)quinolin-2-one | 1,3-dihydro-7,8-dimethyl-2H-imidazo(4,5-b)quinolin-2-one: structure given in first source | ||
| ci 1044 | CI 1044: inhibits PDE4; structure in first source | ||
| t 1032 | T 1032: a cyclic GMP phosphodiesterase-5 inhibitor; structure in first source | ||
| losartan potassium | Erythropoietin: Glycoprotein hormone, secreted chiefly by the KIDNEY in the adult and the LIVER in the FETUS, that acts on erythroid stem cells of the BONE MARROW to stimulate proliferation and differentiation. | ||
| pf 04217903 | quinolines | ||
| 3-(2,5-dimethoxyphenyl)-6-(3,4-dimethoxyphenyl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine | triazoles | ||
| pf-04418948 | 1-(4-fluorobenzoyl)-3-(((6-methoxy-2-naphthyl)oxy)methyl)azetidine-3-carboxylic acid: structure in first source | ||
| nitd 609 | NITD 609: an antimalarial and coccidiostat; structure in first source | ||
| an2728 | crisaborole : A member of the class of benzoxaboroles that is 5-hydroxy-1,3-dihydro-2,1-benzoxaborole in which the phenolic hydrogen has been replaced by a 4-cyanophenyl group. A phosphodiesterase 4 inhibitor that is used for treatment of mild to moderate atopic dermatitis in children and adults. crisaborole: NSAID, Dermatologic Agent; structure in first source | aromatic ether; benzoxaborole; nitrile | antipsoriatic; non-steroidal anti-inflammatory drug; phosphodiesterase IV inhibitor |
| cc-115 | 1-ethyl-7-(2-methyl-6-(1H-1,2,4-triazol-3-yl)pyridin-3-yl)-3,4-dihydropyrazino(2,3-b)pyrazin-2(1H)-one: an mTOR kinase inhibitor; structure in first source | ||
| chf6001 | tanimilast: a phosphodiesterase-4 inhibitor; structure in first source | ||
| cyclic gmp | 3',5'-cyclic GMP : A 3',5'-cyclic purine nucleotide in which the purine nucleobase is specified as guanidine. Cyclic GMP: Guanosine cyclic 3',5'-(hydrogen phosphate). A guanine nucleotide containing one phosphate group which is esterified to the sugar moiety in both the 3'- and 5'-positions. It is a cellular regulatory agent and has been described as a second messenger. Its levels increase in response to a variety of hormones, including acetylcholine, insulin, and oxytocin and it has been found to activate specific protein kinases. (From Merck Index, 11th ed) | 3',5'-cyclic purine nucleotide; guanyl ribonucleotide | Escherichia coli metabolite; human metabolite; mouse metabolite; plant metabolite; Saccharomyces cerevisiae metabolite |
| sildenafil | sildenafil : A pyrazolo[4,3-d]pyrimidin-7-one having a methyl substituent at the 1-position, a propyl substituent at the 3-position and a 2-ethoxy-5-[(4-methylpiperazin-1-yl)sulfonyl]phenyl group at the 5-position. | piperazines; pyrazolopyrimidine; sulfonamide | EC 3.1.4.35 (3',5'-cyclic-GMP phosphodiesterase) inhibitor; vasodilator agent |
| zaprinast | zaprinast: anaphylaxis inhibitor; structure | triazolopyrimidines | |
| vardenafil | vardenafil : The sulfonamide resulting from formal condensation of the sulfo group of 4-ethoxy-3-(5-methyl-7-propylimidazo[5,1-f][1,2,4]triazin-4(1H)-one-2-yl)benzenesulfonic acid and the secondary amino group of 4-ethylpiperazine. | imidazotriazine; N-alkylpiperazine; N-sulfonylpiperazine | EC 3.1.4.* (phosphoric diester hydrolase) inhibitor; vasodilator agent |
| Imidazosagatriazinone | pyrazolopyrimidine | ||
| bl 4162a | anagrelide : A 1,5-dihydroimidazo[2,1-]quinazoline having an oxo substituent at the 2-position and chloro substituents at the 6- and 7-positions. anagrelide: imidazoquinazoline derivative which lowers platelet count probably by inhibiting thrombopoiesis and reduces platelet aggregation; used for thrombocythemia; structure in first source | imidazoquinazoline | anticoagulant; antifibrinolytic drug; cardiovascular drug; platelet aggregation inhibitor |
| 1,5-dihydro-7-(1-piperidinyl)-imidazo(2,1-b)quinazolin-2(3h)-one | 1,5-dihydro-7-(1-piperidinyl)-imidazo(2,1-b)quinazolin-2(3H)-one: a potent inhibitor of platelet aggregation | ||
| quazinone | |||
| lixazinone | lixazinone: structure given in first source | ||
| 6-((3s,4s)-4-methyl-1-(pyrimidin-2-ylmethyl)pyrrolidin-3-yl)-1-(tetrahydro-2h-pyran-4-yl)-1,5-dihydro-4h-pyrazolo(3,4-d)pyrimidin-4-one |