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Sigma-Aldrich/Alcohol Dehydrogenase from Saccharomyces cerevisiae/A7011-30KU/30KU

價(jià)格: ￥748.60 市場價(jià): 973.18

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貨號: A7011-30KU

品牌: Sigma-Aldrich

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Synonym:ADH,AlcoholDehydrogenasefromyeast,Alcohol:NAD⁺oxidoreductase

CASNumber9031-72-5
ECNumber232-870-4
EnzymeCommission(EC)Number1.1.1.1 ( BRENDA | IUBMB )
MDLnumberMFCD00081305
Popular Documents: Datasheet(PDF) | SpecificationSheet(PDF)

Properties:

RelatedCategories	1.1.x.xActingonhydroxylgroups,1.x.x.xOxidoreductases,AlcoholMetabolism,ApplicationIndex,BiochemicalsandReagents, CellBIOLOGy,ChemicalSynthesis,ClinicalChemistry,DiagnosticandAnalyticalEnzymes,EnablingProducts,EnzymeClassIndex,EnzymesforDiagnosticKitManufacturing,Enzymes,Inhibitors,andSubstrates,GeneralMetabolicEnzymes,GreenerAlternativeProducts,Metabolomics,OtherEnablingProducts More...
QualityLevel	PREMIUM
form	lyophilizedpowder(containsbuffersalts)
molwt	M_w141-151 kDa
purifiedby	crystallization
greeneralternativeproductcharacteristics	WastePrevention:Greeneralternativeproductcharacteristics LearnmoreaboutthePrinciplesofGreenChemistry.
solubility	H₂O:soluble1.0 mg/mLcleartoslightlyhazy,colorlesstofaintlyyellow
	:soluble
FeaturedIndustry	DiagnosticAssayManufacturing
greeneralternativecategory	Enabling
shippedin	dryice
storagetemp.	−20°C

Description:

Caution

Containsboundβ-NADandβ-NADHandisnotsuitablefortherecyclingmicroassayofβ-NADandβ-NADH.IfyourequireADHforthispurpose,seeCatalogNo.A3263.

Generaldescription

SigmaLifeScienceiscommittedtobringingyou?Greener?AlternativeProducts,whichadheretooneormoreofThe12Principlesof?Greener?Chemistry.Thisproducthasbeenenhancedforwastepreventionwhenusedinfuelcellresearch.Formoreinformationseethearticleinbiofiles.

Packaging

7500,15000,30000,75000,150000,300000unitsinpolybottle

PreparationNote

Dissolvesinwaterataconcentrationof1mg/mLtoformacleartoslightlyhazy,colorlesstofaintlyyellowcoloredsolution.

UnitDefinition

Oneunitwillconvert1.0?μmoleofethanoltoacetaldehydeperminatpH?8.8at25?°C.

Physicalform

Solidscontaining≤2%citratebuffersalts

Application

Alcoholdehydrogenasehasbeenusedalongwithlacticdehydrogenasefortheenzymaticreductionofacetaldehydeusingsodium(R,S)-[2-³H]lactate.EthanolconcentrationcanbedeterminedcolorimentricallybymonitoringtheenzymaticreductionofNADusingalcoholdehydrogenaseafterpreremovalofthealdehydegroup.

Biochem/physiolActions

ADH(alcoholdehydrogenase)isoneofthefirstenzymestobeisolatedandpurified.NAD⁺isitscoenzyme.ThreeisozymesofyeastADH,thatis,yeastalcoholdehydrogenase-1,2and3(YADH-1,-2,-3)havebeenidentified.YADH-1isexpressedduringanaerobicfermentation,YADH-2isexpressedinthecytoplasmandYADH-3islocalizedtothemitochondria.A141kDatetramercontaining4equalsubunits.Theactivesiteofeachsubunitcontainsazincatom.Eachactivesitealsocontains2reactivesulfhydrylgroupsandahistidineresidue.

Isoelectricpoint:5.4-5.8

OptimalpH:8.6-9.0

Substrates:YeastADHismostactivewithethanolanditsactivitydecreasesasthesizeofthealcoholincreasesordecreases.Branchedchainalcoholsandsecondaryalcoholsalsohaveverylowactivity.

K_M(ethanol)=2.1×10^-2M
K_M(methanol=1.3×10^-1M
K_M(isopropanol)=1.4×10^-1M

Inhibitors:Compoundsthatreactwithfreesulfhydryls,includingN-alkylmaleimidesandiodoacetamide.
Zincchelatorinhibitors,including1,10-phenanthroline,
8-hydroxyquinoline,2,2′-dipyridyl,andthiourea.
Substrateanalogueinhibitors,includingβ-NADanalogs,purineandpyrimidinederivatives,chloroethanol,andfluoroethanol.

ExtinctionCoefficient:E^1%=14.6(water,280nm)

Safety:

PersonalProtectiveEquipment

Eyeshields,Gloves,typeN95(US),typeP1(EN143)respiratorfilter

RIDADR

NONHforallmodesoftransport

WGKGermany

RTECS

SZ5999500

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