4084 Dinophysistoxin 1 Dinophysistoxin 1 is found in mollusks. Dinophysistoxin 1 is a metabolite of Dinophysis fortii. Dinophysistoxin 1 is found in scallops and mussels. Component toxin in diarrhetic shellfish poisoning. Dinophysistoxin 1 belongs to the family of Okadaic Acids and Derivatives. These are heat-stable polyether and lipophilic compounds that accumulate in the fatty tissue of shellfish. 81720-10-7 6437058 C45H70O13 White powder. 134°C Ingestion Dinophysistoxin 1 (DTX1) is the analogue of okadaic acid causing diarrheic shellfish poisoning (DSP) in humans shortly after the ingestion of contaminated seafood. DTX1 is able to disrupt the integrity of Caco-2 monolayer cells at concentrations above 50 nM. In addition, confocal microscopy imaging confirmed that the tight-junction protein, occludin, was affected by DTX1. Permeability assays revealed that only DTX1 was able to significantly cross the intestinal epithelium at concentrations above 100 nM. The mechanism of action of this group of toxins is mainly the potent inhibition of serine/threonine protein phosphatases 1 (PP1) and 2A (PP2A). DTX1-treated Caco-2 monolayers could damage tight-junctions among cells. Tight-junctions form the physical barrier to the diffusion of substances through the paracellular space. No indication of carcinogenicity to humans (not listed by IARC). Dinophysistoxin 1 is found in mollusks. Dinophysistoxin 1 is a metabolite of Dinophysis fortii. Dinophysistoxin 1 is found in scallops and mussels. Component toxin in diarrhetic shellfish poisoning. Dinophysistoxin 1 belongs to the family of Okadaic Acids and Derivatives. 2014-08-29T04:49:32Z 2026-04-05T15:31:46Z C16870 true CC(CC(O)C1OC2CCC3(CCC(O3)\C=C\C(C)C3CC(C)=CC4(OC(CC(C)(O)C(O)=O)CCC4O)O3)OC2C(O)C1=C)C1OC2(CCC1C)OCCCC2C C45H70O13 InChI=1S/C45H70O13/c1-25-21-35(56-45(23-25)36(47)13-12-32(55-45)24-42(7,51)41(49)50)26(2)10-11-31-15-17-43(54-31)18-16-34-40(57-43)37(48)30(6)39(53-34)33(46)22-28(4)38-27(3)14-19-44(58-38)29(5)9-8-20-52-44/h10-11,23,26-29,31-40,46-48,51H,6,8-9,12-22,24H2,1-5,7H3,(H,49,50)/b11-10+ CLBIEZBAENPDFY-ZHACJKMWSA-N 819.0295 818.481642326 Exogenous Solid HMDB30442 4941648 CHEM002990 DTXSID00880001 NS00075586 3-{8-[(3E)-4-[6'-(3-{3,11-dimethyl-1,7-dioxaspiro[5.5]undecan-2-yl}-1-hydroxybutyl)-8'-hydroxy-7'-methylidene-hexahydro-3'H-spiro[oxolane-2,2'-pyrano[3,2-b]pyran]-5-yl]but-3-en-2-yl]-5-hydroxy-10-methyl-1,7-dioxaspiro[5.5]undec-10-en-2-yl}-2-hydroxy-2-methylpropanoic acid