Target type: molecularfunction
Binding to inositol 1,4,5 trisphosphate. [GOC:BHF, GOC:mah]
Inositol 1,4,5-trisphosphate (IP3) binding is a crucial molecular function involved in intracellular signaling pathways. IP3, a second messenger, is generated from the hydrolysis of phosphatidylinositol 4,5-bisphosphate (PIP2) by phospholipase C (PLC). Upon binding to its receptor, IP3 receptor (IP3R), located on the endoplasmic reticulum (ER) membrane, IP3 triggers the release of calcium ions (Ca2+) from the ER lumen into the cytoplasm. This Ca2+ release initiates a cascade of downstream signaling events that regulate various cellular processes, including muscle contraction, neurotransmitter release, cell proliferation, and apoptosis.
The IP3 binding domain (IBD) of IP3R is a highly conserved region that specifically recognizes and binds to IP3. This binding event triggers a conformational change in the IP3R, opening a channel that allows Ca2+ to flow from the ER lumen into the cytoplasm. The affinity of IP3 binding to the IP3R is crucial for regulating the release of Ca2+, and it is modulated by factors such as the concentration of IP3, Ca2+, and other cellular components.
IP3 binding is a dynamic process, and the duration of IP3R activation is tightly controlled by various mechanisms, including dephosphorylation of IP3 by phosphatases, degradation of IP3, and feedback inhibition by Ca2+. The fine-tuned regulation of IP3 binding and Ca2+ release ensures the precise control of cellular processes and responses to external stimuli.'
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Protein | Definition | Taxonomy |
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Inositol 1,4,5-trisphosphate receptor type 2 | An inositol 1,4,5-trisphosphate receptor type 2 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q14571] | Homo sapiens (human) |
Short transient receptor potential channel 5 | A short transient receptor potential channel 5 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9UL62] | Homo sapiens (human) |
Short transient receptor potential channel 7 | A short transient receptor potential cation channel TRPC7 that is encoded in the genome of human. [PRO:CNA, UniProtKB:Q9HCX4] | Homo sapiens (human) |
Short transient receptor potential channel 6 | A short transient receptor potential channel 6 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q9Y210] | Homo sapiens (human) |
Inositol 1,4,5-trisphosphate receptor type 1 | An inositol 1,4,5-trisphosphate receptor type 1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q14643] | Homo sapiens (human) |
Inositol 1,4,5-trisphosphate receptor type 3 | An inositol 1,4,5-trisphosphate receptor type 3 that is encoded in the genome of human. [PRO:DNx, UniProtKB:Q14573] | Homo sapiens (human) |
Short transient receptor potential channel 3 | A short transient receptor potential cation channel TRPC3 that is encoded in the genome of human. [PRO:CNA, UniProtKB:Q13507] | Homo sapiens (human) |
Short transient receptor potential channel 1 | A short transient receptor potential channel 1 that is encoded in the genome of human. [PRO:DNx, UniProtKB:P48995] | Homo sapiens (human) |
Compound | Definition | Classes | Roles |
---|---|---|---|
ym 58483 | |||
clemizole | clemizole : A member of the class of benzimidazoles that is 1H-benzimidazole substituted by a pyrrolidin-1-ylmethyl and a 4-chlorobenzyl groups at positions 2 and 1 respectively. clemizole: was heading 1966-94 (see under BENZIMIDAZOLES 1966-90); use BENZIMIDAZOLES to search CLEMIZOLE 1966-94; a histamine H1- blocker used to treat allergies | benzimidazoles; monochlorobenzenes; pyrrolidines | histamine antagonist |
N-butyl-1H-benzimidazol-2-amine | benzimidazoles | ||
inositol 1,4,5-trisphosphate | Inositol 1,4,5-Trisphosphate: Intracellular messenger formed by the action of phospholipase C on phosphatidylinositol 4,5-bisphosphate, which is one of the phospholipids that make up the cell membrane. Inositol 1,4,5-trisphosphate is released into the cytoplasm where it releases calcium ions from internal stores within the cell's endoplasmic reticulum. These calcium ions stimulate the activity of B kinase or calmodulin. | myo-inositol trisphosphate | mouse metabolite |
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 |
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 | |
galangin | 5,7-dihydroxyflavonol: antimicrobial from the twigs of Populus nigra x Populus deltoides; structure in first source galangin : A 7-hydroxyflavonol with additional hydroxy groups at positions 3 and 5 respectively; a growth inhibitor of breast tumor cells. | 7-hydroxyflavonol; trihydroxyflavone | antimicrobial agent; EC 3.1.1.3 (triacylglycerol lipase) inhibitor; plant metabolite |
myricetin | 7-hydroxyflavonol; hexahydroxyflavone | antineoplastic agent; antioxidant; cyclooxygenase 1 inhibitor; food component; geroprotector; hypoglycemic agent; plant metabolite | |
4-[3-(4-fluorophenyl)-2-methyl-7-oxo-1H-pyrazolo[1,5-a]pyrimidin-5-yl]-1-piperidinecarboxylic acid ethyl ester | pyrazoles; ring assembly | ||
englerin a | cinnamate ester; glycolate ester; guaiane sesquiterpenoid | antineoplastic agent; metabolite | |
ethyl 1-(4-(2,3,3-trichloroacrylamido)phenyl)-5-(trifluoromethyl)-1h-pyrazole-4-carboxylate | ethyl 1-(4-(2,3,3-trichloroacrylamido)phenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylate: structure in first source |