Target type: biologicalprocess
Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a pH stimulus. pH is a measure of the acidity or basicity of an aqueous solution. [GOC:jl, Wikipedia:PH]
Response to pH is a fundamental biological process that enables organisms to maintain cellular homeostasis in the face of fluctuating environmental acidity or alkalinity. This intricate process involves a complex interplay of signaling pathways, sensor proteins, and effector mechanisms to detect and respond to changes in pH.
At the cellular level, specialized transmembrane proteins, known as pH sensors, are crucial for detecting changes in pH. These proteins often exhibit structural modifications in response to pH fluctuations, which trigger downstream signaling cascades. A wide range of sensor proteins exist, each adapted to different pH ranges and cellular compartments.
Once a pH change is detected, signaling pathways are activated. These pathways can involve a variety of signaling molecules, including second messengers, protein kinases, and transcription factors. The specific signaling pathway activated depends on the type of pH change, the cell type, and the organism.
The response to pH can manifest in various ways, including:
* **Regulation of gene expression:** Changes in pH can influence the expression of genes involved in acid-base balance, stress response, and other pH-sensitive processes. Transcription factors are often involved in mediating these transcriptional responses.
* **Ion transport:** Cells can regulate the movement of ions, such as H+, Na+, and K+, across their membranes to maintain intracellular pH homeostasis. Ion pumps and channels play crucial roles in this process.
* **Metabolic adjustments:** Changes in pH can alter metabolic pathways to compensate for changes in acid-base balance. For example, cells may increase the production of bicarbonate ions to neutralize excess acidity.
* **Cellular growth and development:** pH is a critical factor in regulating cellular growth and differentiation. Changes in pH can alter the expression of genes involved in these processes, leading to changes in cell size, shape, and function.
Overall, the response to pH is a highly dynamic and regulated process that is essential for maintaining cellular homeostasis and survival. This intricate interplay of sensors, signaling pathways, and effector mechanisms ensures that organisms can adapt to fluctuating pH environments and maintain proper cellular function.'
"
Protein | Definition | Taxonomy |
---|---|---|
ATP-binding cassette sub-family C member 8 | An ATP-binding cassette sub-family C member 8 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q09428] | Homo sapiens (human) |
Lysosomal acid glucosylceramidase | A lysosomal acid glucosylceramidase that is encoded in the genome of human. [PRO:DNx, UniProtKB:P04062] | Homo sapiens (human) |
Compound | Definition | Classes | Roles |
---|---|---|---|
ambroxol | Ambroxol: A metabolite of BROMHEXINE that stimulates mucociliary action and clears the air passages in the respiratory tract. It is usually administered as the hydrochloride. | aromatic amine | |
diazoxide | diazoxide : 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 |
glyburide | glyburide : 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 |
troglitazone | Troglitazone: 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 |
beta-glucono-1,5-lactone | beta-glucono-1,5-lactone: structure D-glucono-1,5-lactone : An aldono-1,5-lactone obtained from D-gluconic acid. | aldono-1,5-lactone; gluconolactone | animal metabolite; mouse metabolite |
1-deoxynojirimycin | 1-deoxy-nojirimycin: structure in first source duvoglustat : An optically active form of 2-(hydroxymethyl)piperidine-3,4,5-triol having 2R,3R,4R,5S-configuration. | 2-(hydroxymethyl)piperidine-3,4,5-triol; piperidine alkaloid | anti-HIV agent; anti-obesity agent; bacterial metabolite; EC 3.2.1.20 (alpha-glucosidase) inhibitor; hepatoprotective agent; hypoglycemic agent; plant metabolite |
n-cyano-n'-(1,1-dimethylpropyl)-n''-(3-pyridinyl)guanidine | N-cyano-N'-(1,1-dimethylpropyl)-N''-(3-pyridinyl)guanidine: potassium channel opener | pyridines | |
miglustat | miglustat : A hydroxypiperidine that is deoxynojirimycin in which the amino hydrogen is replaced by a butyl group. miglustat: a glucosylceramide synthase inhibitor | piperidines; tertiary amino compound | anti-HIV agent; EC 2.4.1.80 (ceramide glucosyltransferase) inhibitor |
repaglinide | piperidines | ||
n-phenylphthalimide | N-phenylphthalimide: structure given in first source | ||
cromakalim | Cromakalim: 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) | ||
N-Benzylphthalimide | isoindoles | ||
rosiglitazone | aminopyridine; thiazolidinediones | EC 6.2.1.3 (long-chain-fatty-acid--CoA ligase) inhibitor; ferroptosis inhibitor; insulin-sensitizing drug | |
1-(10h-phenothiazin-2-yl)ethanone | 1-(10H-phenothiazin-2-yl)ethanone: structure in first source | phenothiazines | |
mor-14 | N-methyldeoxynojirimycin: glucosidase inhibitor | hydroxypiperidine; piperidine alkaloid; tertiary amino compound | anti-HIV agent; cardioprotective agent; EC 3.2.1.20 (alpha-glucosidase) inhibitor; plant metabolite |
1,2,3,4-tetrahydroxy-nor-tropane | calystegine B(2): RN given for (2-endo,3-exo,4-endo)-isomer; structure in first source | ||
mk 767 | 5-((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 | ||
homonojirimycin | homonojirimycin: inhibits alpha-glucosidase; RN given for (2R-(2alpha,3alpha,4beta,5alpha,6beta))-isomer; structure in first source | ||
cyclophellitol | cyclophellitol: structure given in first source; isolated from Phellinus sp. | ||
zeneca zd 6169 | Zeneca ZD 6169: an ATP-sensitive potassium channel opener; structure given in first source | ||
calystegine a3 | calystegine A3: also inhibits beta-xylosidase; structure in first source | ||
miglitol | piperidines | ||
cromakalim | 1-benzopyran | ||
isofagomine | piperidines | ||
n-nonyl-1-deoxynojirimycin | N-nonyldeoxynojirimycin : A hydroxypiperidine that is deoxynojirimycin (duvoglustat) in which the amino hydrogen is replaced by a nonyl group. | hydroxypiperidine; tertiary amino compound | antiviral agent; EC 3.2.1.20 (alpha-glucosidase) inhibitor; EC 3.2.1.45 (glucosylceramidase) inhibitor |
1-(1-benzimidazolyl)-3-(1-cyclohex-3-enylmethoxy)-2-propanol | benzimidazoles | ||
2-(2-phenylethylthio)-3-pyridinecarboxylic acid | aromatic carboxylic acid; pyridines | ||
4-(2-furanylmethyl)-3-(phenylmethyl)-1H-1,2,4-triazole-5-thione | benzenes | ||
2-[[4-(4-chloroanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | dialkylarylamine; tertiary amino compound | ||
4-(benzenesulfonamido)-N-(5-ethyl-1,3,4-thiadiazol-2-yl)benzamide | sulfonamide | ||
tamoxifen | stilbenoid; tertiary amino compound | angiogenesis inhibitor; antineoplastic agent; bone density conservation agent; EC 1.2.3.1 (aldehyde oxidase) inhibitor; EC 2.7.11.13 (protein kinase C) inhibitor; estrogen antagonist; estrogen receptor antagonist; estrogen receptor modulator | |
4-oxido-3-(4-phenoxyphenyl)-4a,5,6,7,8,8a-hexahydroquinoxalin-1-ium 1-oxide | aromatic ether | ||
clamikalant | clamikalant: inhibits ATP-sensitive potassium channel; structure in first source | ||
2-[[4-(3-methylanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | dialkylarylamine; tertiary amino compound | ||
N-(1-benzylpiperidin-4-yl)-2-(pyridin-3-yl)quinazolin-4-amine | N-(1-benzylpiperidin-4-yl)-2-(pyridin-3-yl)quinazolin-4-amine : A member of the class of quinazolines that is quinazoline which is substituted by a pyridin-3-yl group and a (1-benzylpiperidin-4-yl)nitrilo group at positions 2 and 4, respectively. | aromatic amine; piperidines; pyridines; quinazolines; secondary amino compound; tertiary amino compound | |
N-[4-methyl-2-(4-morpholinyl)-6-quinolinyl]cyclohexanecarboxamide | aminoquinoline | ||
zm226600 | ZM226600: an ATP-sensitive potassium channel opener; structure in first source | anilide | |
n-(5-adamantane-1-yl-methoxy-pentyl)deoxynojirimycin | |||
ogt2378 | sinbaglustat: an antineopl agent; structure in first source | ||
way 133537 | |||
ly 465608 | LY 465608: a nonthiazolidinedione agonist of both PPAR-alpha and PPAR-gamma of Ligand Pharm. and Eli Lilly | ||
nnc 26-9100 | NNC 26-9100: structure in first source | aminopyridine | |
bm 131246 | |||
2-[[4-[2-[(2-methylpropan-2-yl)oxy]anilino]-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | aromatic ether | ||
2-[[4-(5-chloro-2-methoxyanilino)-6-(1-piperidinyl)-1,3,5-triazin-2-yl]amino]ethanol | methoxybenzenes; substituted aniline | ||
2-[[4-(4-methylanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | dialkylarylamine; tertiary amino compound | ||
2-[[4-(2-chloroanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | dialkylarylamine; tertiary amino compound | ||
2-[[4-(2-methoxyanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | methoxybenzenes; substituted aniline | ||
2-[[4-(3-methoxyanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | methoxybenzenes; substituted aniline | ||
2-[[4-(4-methoxyanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | methoxybenzenes; substituted aniline | ||
2-[[4-(2-hydroxyethylamino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]phenol | dialkylarylamine; tertiary amino compound | ||
2-[[4-(2-phenoxyanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | aromatic ether | ||
2-[[4-(1-pyrrolidinyl)-6-[2-(trifluoromethoxy)anilino]-1,3,5-triazin-2-yl]amino]ethanol | aromatic ether | ||
2-[[4-(5-chloro-2-ethoxyanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | aromatic ether | ||
2-[[4-(5-chloro-2-propan-2-yloxyanilino)-6-(1-pyrrolidinyl)-1,3,5-triazin-2-yl]amino]ethanol | aromatic ether | ||
nn 414 | NN 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-dioxide | 7-chloro-3-isopropylamino-4H-1,2,4-benzothiadiazine 1,1-dioxide: activates ATP-sensitive potassium channels; structure in first source |