Target type: molecularfunction
Catalysis of the cleavage of a phosphorus-oxygen bond by other means than by hydrolysis or oxidation, or conversely adding a group to a double bond. [GOC:jl]
Phosphorus-oxygen lyase activity refers to the enzymatic process that cleaves a phosphorus-oxygen bond. This type of activity is crucial for a variety of biological processes, including:
* **Nucleic acid metabolism:** Enzymes like DNA polymerase and RNA polymerase require phosphorus-oxygen lyases to break down phosphodiester bonds in nucleic acids, enabling DNA replication and transcription.
* **Energy metabolism:** The hydrolysis of phosphate esters, such as ATP, by ATPases involves phosphorus-oxygen lyase activity. This activity is vital for energy production and utilization within cells.
* **Signal transduction:** Phosphatases, enzymes that remove phosphate groups from proteins, utilize phosphorus-oxygen lyase activity. This process regulates protein function and plays a critical role in signaling pathways.
* **Carbohydrate metabolism:** Phosphatases involved in carbohydrate metabolism, such as glucose-6-phosphatase, employ phosphorus-oxygen lyase activity to liberate phosphate groups, contributing to the regulation of glucose levels.
The mechanism of phosphorus-oxygen lyase activity typically involves the formation of a transient intermediate, often a covalent complex between the enzyme and the substrate. This complex facilitates the breaking of the phosphorus-oxygen bond, releasing the products of the reaction. The specific reaction mechanism can vary depending on the enzyme and the substrate involved.
In summary, phosphorus-oxygen lyase activity is an essential enzymatic function involved in a multitude of biological processes, playing a critical role in nucleic acid metabolism, energy production, signal transduction, and carbohydrate metabolism.'
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| Protein | Definition | Taxonomy |
|---|---|---|
| ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase 1 | An ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase 1 that is encoded in the genome of human. [PRO:WCB, UniProtKB:P28907] | Homo sapiens (human) |
| Compound | Definition | Classes | Roles |
|---|---|---|---|
| taxifolin | 3'-hydroxyflavanones; 4'-hydroxyflavanones; dihydroflavonols; pentahydroxyflavanone; secondary alpha-hydroxy ketone | ||
| catechin | hydroxyflavan | ||
| delphinidin | delphinidin : An anthocyanidin cation consisting of benzopyrylium with hydroxy substituents at the 3-, 5- and 7-positions and a 3,4,5-trihydroxyphenyl group at the 2-position. It is a plant pigment responsible for the colours of the plants of the genera Viola and Delphinium. delphinidin: RN given refers to parent cpd; | 5-hydroxyanthocyanidin | antineoplastic agent; biological pigment; plant metabolite |
| cyanidin | cyanidin cation : An anthocyanidin cation that is flavylium substituted at positions 3, 3', 4', 5 and 7 by hydroxy groups. cyanidin: RN given refers to parent cpd; structure | 5-hydroxyanthocyanidin | antioxidant; metabolite; neuroprotective agent |
| malvidin | malvidin : An anthocyanidin cation that is delphinidin carrying methyl substituents at positions 3' and 5'. malvidin: RN given refers to parent cpd; coloring agent from flowers of Malvaviscus conzatti | 5-hydroxyanthocyanidin | biological pigment; metabolite |
| pelargonidin | pelargonidin : An anthocyanidin cation that is flavylium substituted by a hydroxy groups at positions 3, 5, 7 and 4'. pelargonidin: influences flower phenotype | 5-hydroxyanthocyanidin | plant metabolite |
| cyanidin 3-o-beta-d-glucopyranoside | cyanidin 3-O-beta-D-glucoside : An anthocyanin cation that is a cyanidin cation linked to a beta-D-glucosyl moiety at position 3. | anthocyanin cation; beta-D-glucoside; monosaccharide derivative | metabolite |
| buclizine | luteolinidin: structure in first source | 5-hydroxyanthocyanidin | |
| peonidin | peonidin : An anthocyanidin cation that is flavylium bearing four hydroxy substituents at positions 3, 4', 5 and 7 as well as a methoxy substituent at position 3'. peonidin: a COX-2 inhibitor with protein kinase inhibitory and phytogenic antineoplastic activities; RN given for chloride salt | 5-hydroxyanthocyanidin | antineoplastic agent; antioxidant; apoptosis inducer; metabolite |
| petunidin | petunidin : An anthocyanidin cation that is flavylium bearing five hydroxy substituents at positions 3, 3', 4', 5 and 7 as well as a methoxy substituent at position 5'. petunidin: RN given for chloride salt | 5-hydroxyanthocyanidin | plant metabolite |
| resveratrol | trans-resveratrol : A resveratrol in which the double bond has E configuration. | resveratrol | antioxidant; phytoalexin; plant metabolite; quorum sensing inhibitor; radical scavenger |
| 3,3',4,5'-tetrahydroxystilbene | 3,3',4,5'-tetrahydroxystilbene: demethyl derivative of isorhapontigenin; structure in first source; a Syk kinase inhibitor; found in heartwood of FABACEAE; inhibitor of photosynthesis in spinach chloroplasts; may be inhibitor of plant growth; RN given refers to (E)-isomer piceatannol : A stilbenol that is trans-stilbene in which one of the phenyl groups is substituted by hydroxy groups at positions 3 and 4, while the other phenyl group is substituted by hydroxy groups at positions 3 and 5. | catechols; polyphenol; resorcinols; stilbenol | antineoplastic agent; apoptosis inducer; geroprotector; hypoglycemic agent; plant metabolite; protein kinase inhibitor; tyrosine kinase inhibitor |
| ex 527 | 6-chloro-2,3,4,9-tetrahydro-1H-carbazole-1-carboxamide : A member of the class of carbazoles that is 2,3,4,9-tetrahydro-1H-carbazole which is substituted at position 1 by an aminocarbohyl group and at position 6 by a chlorine. 6-chloro-2,3,4,9-tetrahydro-1H-carbazole-1-carboxamide: structure in first source | carbazoles; monocarboxylic acid amide; organochlorine compound | |
| 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 | |
| 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 | |
| myricetin | 7-hydroxyflavonol; hexahydroxyflavone | antineoplastic agent; antioxidant; cyclooxygenase 1 inhibitor; food component; geroprotector; hypoglycemic agent; plant metabolite | |
| quercetagetin | quercetagetin : A hexahydroxyflavone that is flavone substituted by hydroxy groups at positions 3, 5, 6, 7, 3' and 4' respectively. quercetagetin: structure given in first source; inhibits aldose reductase in rat lens | flavonols; hexahydroxyflavone | antioxidant; antiviral 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 |