Okadaic acid
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Basic Info
Common Name | Okadaic acid(F02574) |
2D Structure | |
Description | Okadaic acid (OA) and dinophysis toxins (DTX1, DTX2, and DTX3) are together termed OA-group toxins. These lipophilic toxins are heat stable, are produced by dinoflagellates and can be found in various species of shellfish, mainly bivalve molluscs. While OA and DTX2 only differ by the position of one methyl group in the molecule, DTX1 has one additional methyl group and DTX3 represents a wide range of derivatives of OA, DTX1 and DTX2 esterified with saturated and unsaturated fatty acids. |
FRCD ID | F02574 |
CAS Number | 78111-17-8 |
PubChem CID | 11953808 |
Formula | C44H68O13 |
IUPAC Name | (2R)-3-[(2S,6R,8S,11R)-2-[(E,2R)-4-[(2S,2'R,4R,6R,8aR)-4-hydroxy-2-[(1S,3S)-1-hydroxy-3-[(3R,6S)-3-methyl-1,7-dioxaspiro[5.5]undecan-2-yl]butyl]-3-methylidenespiro[4a,7,8,8a-tetrahydro-4H-pyrano[3,2-b]pyran-6,5'-oxolane]-2'-yl]but-3-en-2-yl]-11-hydroxy-4-methyl-1,7-dioxaspiro[5.5]undec-4-en-8-yl]-2-hydroxy-2-methylpropanoic acid |
InChI Key | QNDVLZJODHBUFM-AAWJMCDUSA-N |
InChI | InChI=1S/C44H68O13/c1-25-21-34(55-44(23-25)35(46)12-11-31(54-44)24-41(6,50)40(48)49)26(2)9-10-30-14-18-43(53-30)19-15-33-39(57-43)36(47)29(5)38(52-33)32(45)22-28(4)37-27(3)13-17-42(56-37)16-7-8-20-51-42/h9-10,23,26-28,30-39,45-47,50H,5,7-8,11-22,24H2,1-4,6H3,(H,48,49)/b10-9+/t26-,27-,28+,30+,31+,32+,33-,34+,35-,36-,37?,38+,39?,41-,42+,43-,44-/m1/s1 |
Canonical SMILES | CC1CCC2(CCCCO2)OC1C(C)CC(C3C(=C)C(C4C(O3)CCC5(O4)CCC(O5)C=CC(C)C6CC(=CC7(O6)C(CCC(O7)CC(C)(C(=O)O)O)O)C)O)O |
Isomeric SMILES | C[C@@H]1CC[C@]2(CCCCO2)OC1[C@@H](C)C[C@@H]([C@@H]3C(=C)[C@H](C4[C@H](O3)CC[C@]5(O4)CC[C@@H](O5)/C=C/[C@@H](C)[C@@H]6CC(=C[C@@]7(O6)[C@@H](CC[C@H](O7)C[C@](C)(C(=O)O)O)O)C)O)O |
Synonyms | okadaic acid 78111-17-8 C01945 ro-3H,3'H-spiro[furan-2,2'-pyrano[3,2-b]pyran]-5-yl)but-3-en-2-yl)-10-methyl-1,7-dioxaspiro[5.5]undec-10-en-2-yl)-2-methylpropanoic acid (2R)-2-hydroxy-3-((2S,5R,6R,8S)-5-hydroxy-8-((2R,E)-4-((2R,4a'R,5R,6'S,8'R)-8'-hydroxy-6'-((1S,3S)-1-hydroxy-3-((3R,6S)-3-methyl-1,7-dioxaspiro[5.5]undecan-2-yl)butyl)-7'-methyleneoctahyd |
Classifies | Predicted: Animal Toxin |
Update Date | Nov 13, 2018 17:07 |
Chemical Taxonomy
Kingdom | Organic compounds |
Superclass | Organic oxygen compounds |
Class | Organooxygen compounds |
Subclass | Ethers |
Intermediate Tree Nodes | Acetals |
Direct Parent | Ketals |
Alternative Parents | |
Molecular Framework | Aliphatic heteropolycyclic compounds |
Substituents | Ketal - Alpha-hydroxy acid - Hydroxy acid - Oxane - Pyran - Oxolane - Tertiary alcohol - Secondary alcohol - Organoheterocyclic compound - Oxacycle - Monocarboxylic acid or derivatives - Dialkyl ether - Carboxylic acid - Carboxylic acid derivative - Alcohol - Hydrocarbon derivative - Carbonyl group - Organic oxide - Aliphatic heteropolycyclic compound |
Description | This compound belongs to the class of organic compounds known as ketals. These are acetals derived from ketones by replacement of the oxo group by two hydrocarbyloxy groups R2C(OR)2 ( R not Hydrogen ). This term, once abandoned, has been reinstated as a subclass of acetals. |
Properties
Property Name | Property Value |
---|---|
Molecular Weight | 805.015 |
Hydrogen Bond Donor Count | 5 |
Hydrogen Bond Acceptor Count | 13 |
Rotatable Bond Count | 10 |
Complexity | 1520 |
Monoisotopic Mass | 804.466 |
Exact Mass | 804.466 |
XLogP | 3.4 |
Formal Charge | 0 |
Heavy Atom Count | 57 |
Defined Atom Stereocenter Count | 15 |
Undefined Atom Stereocenter Count | 2 |
Defined Bond Stereocenter Count | 1 |
Undefined Bond Stereocenter Count | 0 |
Isotope Atom Count | 0 |
Covalently-Bonded Unit Count | 1 |
ADMET
Model | Result | Probability |
---|---|---|
Absorption | ||
Blood-Brain Barrier | BBB+ | 0.7501 |
Human Intestinal Absorption | HIA+ | 0.7740 |
Caco-2 Permeability | Caco2- | 0.7499 |
P-glycoprotein Substrate | Substrate | 0.8476 |
P-glycoprotein Inhibitor | Non-inhibitor | 0.5804 |
Non-inhibitor | 0.8289 | |
Renal Organic Cation Transporter | Non-inhibitor | 0.8043 |
Distribution | ||
Subcellular localization | Mitochondria | 0.7991 |
Metabolism | ||
CYP450 2C9 Substrate | Non-substrate | 0.8816 |
CYP450 2D6 Substrate | Non-substrate | 0.8930 |
CYP450 3A4 Substrate | Substrate | 0.7343 |
CYP450 1A2 Inhibitor | Non-inhibitor | 0.8688 |
CYP450 2C9 Inhibitor | Non-inhibitor | 0.9020 |
CYP450 2D6 Inhibitor | Non-inhibitor | 0.9508 |
CYP450 2C19 Inhibitor | Non-inhibitor | 0.8976 |
CYP450 3A4 Inhibitor | Non-inhibitor | 0.8160 |
CYP Inhibitory Promiscuity | Low CYP Inhibitory Promiscuity | 0.9621 |
Excretion | ||
Toxicity | ||
Human Ether-a-go-go-Related Gene Inhibition | Weak inhibitor | 0.9472 |
Non-inhibitor | 0.5103 | |
AMES Toxicity | Non AMES toxic | 0.9132 |
Carcinogens | Non-carcinogens | 0.9710 |
Fish Toxicity | High FHMT | 0.9950 |
Tetrahymena Pyriformis Toxicity | High TPT | 0.9988 |
Honey Bee Toxicity | High HBT | 0.8172 |
Biodegradation | Not ready biodegradable | 0.9771 |
Acute Oral Toxicity | I | 0.5349 |
Carcinogenicity (Three-class) | Non-required | 0.5290 |
Model | Value | Unit |
---|---|---|
Absorption | ||
Aqueous solubility | -4.5472 | LogS |
Caco-2 Permeability | 0.3130 | LogPapp, cm/s |
Distribution | ||
Metabolism | ||
Excretion | ||
Toxicity | ||
Rat Acute Toxicity | 3.6260 | LD50, mol/kg |
Fish Toxicity | 0.5143 | pLC50, mg/L |
Tetrahymena Pyriformis Toxicity | 0.9784 | pIGC50, ug/L |
References
Title | Journal | Date | Pubmed ID |
---|---|---|---|
Sensor system based on flexible screen-printed electrodes for electrochemical detection of okadaic acid in seawater. | Talanta | 2019 Jan 15 | 30348401 |
<i>Dinophysis acuta</i> in Scottish Coastal Waters and Its Influence on Diarrhetic Shellfish Toxin Profiles. | Toxins (Basel) | 2018 Sep 28 | 30274219 |
Interannual variability in Dinophysis spp. abundance and toxin accumulation in farmed mussels (Perna perna) in a subtropical estuary. | Environ Monit Assess | 2018 May 5 | 29730718 |
Selective Extraction and Purification of Azaspiracids from Blue Mussels ( Mytilus edulis) Using Boric Acid Gel. | J Agric Food Chem | 2018 Mar 21 | 29502403 |
Diel Variations in Cell Abundance and Trophic Transfer of Diarrheic Toxins during a Massive <i>Dinophysis</i> Bloom in Southern Brazil. | Toxins (Basel) | 2018 Jun 6 | 29882830 |
Interlaboratory comparison of liquid chromatography-tandem mass spectrometry quantification of diarrhetic shellfish toxins in scallop midgut glands. | Food Chem | 2018 Jun 30 | 29478555 |
Effect of Suspended Particulate Matter on the Accumulation of Dissolved Diarrhetic Shellfish Toxins by Mussels (<i>Mytilus galloprovincialis</i>) under Laboratory Conditions. | Toxins (Basel) | 2018 Jul 3 | 29970810 |
Variability and profiles of lipophilic toxins in bivalves from Great Britain during five and a half years of monitoring: Okadaic acid, dinophysis toxins and pectenotoxins. | Harmful Algae | 2018 Jul | 30005803 |
Mixtures of Lipophilic Phycotoxins: Exposure Data and Toxicological Assessment. | Mar Drugs | 2018 Jan 31 | 29385038 |
Pulsed light reduces the toxicity of the algal toxin okadaic acid to freshwater crustacean Daphnia pulex. | Environ Sci Pollut Res Int | 2018 Jan | 29052147 |
Combined effect of temperature and nutritional regime on the elimination of the lipophilic toxin okadaic acid in the naturally contaminated wedge shell Donax trunculus. | Chemosphere | 2018 Jan | 28987405 |
Self-assembled monolayer-based immunoassays for okadaic acid detection in seawater as monitoring tools. | Mar Environ Res | 2018 Feb | 29174400 |
Spatial and seasonal variation of diarrheic shellfish poisoning (DSP) toxins in bivalve mollusks from some coastal regions of Vietnam and assessment of potential health risks. | Mar Pollut Bull | 2018 Aug | 30041395 |
Comparative toxicity of dinophysistoxin-1 and okadaic acid in mice. | J Vet Med Sci | 2018 Apr 18 | 29491228 |
Determination of Lipophilic Marine Biotoxins in Mussels Harvested from the Adriatic Sea by LC-MS/MS. | Front Microbiol | 2018 | 29487576 |
Analysis of lipophilic marine biotoxins by liquid chromatography coupled with high-resolution mass spectrometry in seawater from the Catalan Coast. | Anal Bioanal Chem | 2017 Sep | 28815284 |
Lipophilic marine toxins discovered in the Bohai Sea using high performance liquid chromatography coupled with tandem mass spectrometry. | Chemosphere | 2017 Sep | 28554022 |
Detection of okadaic acid (OA) using ELISA and colloidal gold immunoassay based on monoclonal antibody. | J Hazard Mater | 2017 Oct 5 | 28648727 |
Accumulation and Tissue Distribution of Dinophysitoxin-1 and Dinophysitoxin-3 in the Mussel Crenomytilus grayanus Feeding on the Benthic Dinoflagellate Prorocentrum foraminosum. | Mar Drugs | 2017 Oct 24 | 29064453 |
In vitro bioaccessibility of the marine biotoxins okadaic acid, dinophysistoxin-2 and their 7-O-acyl fatty acid ester derivatives in raw and steamed shellfish. | Food Chem Toxicol | 2017 Mar | 28089692 |
Targets
- General Function:
- Protein serine/threonine phosphatase activity
- Specific Function:
- Protein phosphatase that associates with over 200 regulatory proteins to form highly specific holoenzymes which dephosphorylate hundreds of biological targets. Protein phosphatase 1 (PP1) is essential for cell division, and participates in the regulation of glycogen metabolism, muscle contractility and protein synthesis. Dephosphorylates RPS6KB1. Involved in regulation of ionic conductances and long-term synaptic plasticity. May play an important role in dephosphorylating substrates such as the postsynaptic density-associated Ca(2+)/calmodulin dependent protein kinase II. Component of the PTW/PP1 phosphatase complex, which plays a role in the control of chromatin structure and cell cycle progression during the transition from mitosis into interphase. In balance with CSNK1D and CSNK1E, determines the circadian period length, through the regulation of the speed and rhythmicity of PER1 and PER2 phosphorylation. May dephosphorylate CSNK1D and CSNK1E. Dephosphorylates the 'Ser-418' residue of FOXP3 in regulatory T-cells (Treg) from patients with rheumatoid arthritis, thereby inactivating FOXP3 and rendering Treg cells functionally defective (PubMed:23396208).
- Gene Name:
- PPP1CC
- Uniprot ID:
- P36873
- Molecular Weight:
- 36983.4 Da
References
- Overington JP, Al-Lazikani B, Hopkins AL: How many drug targets are there? Nat Rev Drug Discov. 2006 Dec;5(12):993-6. [17139284 ]