inositol trisphosphate metabolic process
Definition
Target type: biologicalprocess
The chemical reactions and pathways involving myo-inositol phosphate, 1,2,3,4,5,6-cyclohexanehexol, with three phosphate groups attached. [GOC:mah]
Inositol trisphosphate (IP3) metabolic process is a fundamental signaling pathway that plays a crucial role in various cellular processes, including calcium signaling, cell growth, proliferation, and apoptosis. IP3 is a second messenger molecule generated from the hydrolysis of phosphatidylinositol 4,5-bisphosphate (PIP2) by the enzyme phospholipase C (PLC). This hydrolysis is typically triggered by the activation of G protein-coupled receptors (GPCRs) or receptor tyrosine kinases (RTKs). Once produced, IP3 diffuses through the cytoplasm and binds to IP3 receptors (IP3Rs), which are ligand-gated calcium channels located on the endoplasmic reticulum (ER) membrane. Binding of IP3 to IP3Rs causes the channels to open, releasing calcium ions from the ER into the cytosol. This increase in cytosolic calcium concentration triggers a cascade of downstream signaling events that lead to various cellular responses. The metabolism of IP3 is tightly regulated to ensure proper signal transduction. IP3 is rapidly dephosphorylated by inositol polyphosphate 5-phosphatase (IPP5) to produce inositol 1,4,5-trisphosphate (IP4), which is further dephosphorylated by inositol polyphosphate 1-phosphatase (IPP1) to generate inositol 1,4-bisphosphate (IP2). IP2 can be further dephosphorylated to inositol monophosphate (IP1) and ultimately to inositol, which is recycled back to PIP2. The regulation of IP3 metabolism is critical for controlling calcium signaling and other cellular processes. Dysregulation of IP3 signaling has been implicated in a variety of diseases, including cancer, diabetes, and neurodegenerative disorders.'
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Proteins (2)
| Protein | Definition | Taxonomy |
|---|---|---|
| 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-1 | A 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase beta-1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9NQ66] | Homo sapiens (human) |
| Inositol polyphosphate multikinase | An inositol polyphosphate multikinase that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q8NFU5] | Homo sapiens (human) |
Compounds (16)
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| 1,2-hexanoylphosphatidylcholine | 1,2-hexanoylphosphatidylcholine: RN given refers to cpd without isomeric designation | ||
| 3',4'-dihydroxyflavone | 3',4'-dihydroxyflavone: inhibitors of arachidonic acid peroxidation | ||
| 4',6-dihydroxyflavone | 4',6-dihydroxyflavone : A dihydroxyflavone that is flavone substituted by hydroxy groups at positions 4' and 6. | dihydroxyflavone | |
| naringenin | (S)-naringenin : The (S)-enantiomer of naringenin. | (2S)-flavan-4-one; naringenin | expectorant; plant metabolite |
| eriodictyol | eriodictyol : A tetrahydroxyflavanone that is flavanone substituted by hydroxy groups at positions 5, 7, 3' and 4' respectively. eriodictyol: structure | 3'-hydroxyflavanones; tetrahydroxyflavanone | |
| 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 | |
| acacetin | 5,7-dihydroxy-4'-methoxyflavone : A monomethoxyflavone that is the 4'-methyl ether derivative of apigenin. | dihydroxyflavone; monomethoxyflavone | anticonvulsant; plant metabolite |
| 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 |
| luteolin | 3'-hydroxyflavonoid; tetrahydroxyflavone | angiogenesis inhibitor; anti-inflammatory agent; antineoplastic agent; apoptosis inducer; c-Jun N-terminal kinase inhibitor; EC 2.3.1.85 (fatty acid synthase) inhibitor; immunomodulator; nephroprotective agent; plant metabolite; radical scavenger; vascular endothelial growth factor receptor antagonist | |
| 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 | |
| genkwanin | genkwanin : A monomethoxyflavone that is apigenin in which the hydroxy group at position 7 is methylated. genkwanin: structure | dihydroxyflavone; monomethoxyflavone | metabolite |
| 3-methylquercetin | isorhamnetin : A monomethoxyflavone that is quercetin in which the hydroxy group at position 3' is replaced by a methoxy group. | 7-hydroxyflavonol; monomethoxyflavone; tetrahydroxyflavone | anticoagulant; EC 1.14.18.1 (tyrosinase) inhibitor; metabolite |
| myricetin | 7-hydroxyflavonol; hexahydroxyflavone | antineoplastic agent; antioxidant; cyclooxygenase 1 inhibitor; food component; geroprotector; hypoglycemic agent; plant metabolite | |
| rhamnetin | rhamnetin : A monomethoxyflavone that is quercetin methylated at position 7. rhamnetin: aglycone of xanthorhamnin; from Rhamnus | monomethoxyflavone; tetrahydroxyflavone | anti-inflammatory agent; antioxidant; metabolite |
| 4',7-dihydroxyflavone | 4',7-dihydroxyflavone : A dihydroxyflavone in which the two hydroxy substituents are located at positions 4' and 7. 4',7-dihydroxyflavone: inducer of nod gene | dihydroxyflavone | metabolite |