Glutathionereductase(GR)isamemberofpyridinenucleotide-disulfideoxidoreductases,whichincludesthecloselyrelatedenzymesthioredoxinreductase,lipoamidedehydrogenase,trypanothionereductaseandmercuricionreductase.GRisacytoplasmicflavoenzymewidelydistributedinaerobicorganisms.Thedimericproteiniscomposedoftwoidenticalsubunits,eachcontaining1FADand1redox-activedisulfide/dithiolascomponentsofthecatalyticapparatus.Itplaysaroleinmaintainingglutathione(GSH)initsreducedformbycatalyzingthereductionofglutathionedisulfide(GSSG)(1):GSSG+NADPH+H+2GSH+NADP+Inmosteukaryoticcells,GRmaintainstheratioof[GSH]/[GSSG]elevated,andparticipatesinseveralvitalfunctionssuchasthedetoxificationofreactiveoxygenspeciesaswellasproteinandDNAbiosynthesis(2).||Source:|Recombunantcorrespondingtoaa1-483,fromyeastGlutathioneReductase,expressedinE.coli.||MolecularWeight:|~53kD||SpecificActivity:|85U/mg(Oneunitwillreduce1umoleofoxidizedglutathioneperminatpH7.5at25°C)||StorageandStABIlity:|Aliquottoavoidrepeatedfreezingandthawingandstoreat-70°C.Formaximumrecoveryofproduct,centrifugetheoriginalvialafterthawingandpriortoremovingthecap.Source:E.coli|Purity:~95%(SDS-PAGE)|Concentration:~1mg/ml|Form:Suppliedasaliquidin20mMHEPES,pH7.0,10%glycerol.||ImportantNote:Thisproductassuppliedisintendedforresearchuseonly,notforuseinhuman,therapeuticordiagnosticapplicationswithouttheexpressedwrittenauthorizationofUnitedStatesBIOLOGical.

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