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StressMarq/StressXpress® Glutathione S-Transferase Activity Kit/SKT-203/96-well

价格
¥7180.00
货号:SKT-203
浏览量:117
品牌:StressMarq
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商品描述

Overview:

ProductNameGlutathioneS-TransferaseActivityKit
Description

QuantitativefluorometricmeasurementoftheactivityofGST

SpeciesReactivityHuman,Fish,Mollusk,Oyster,Toadfish(Batrachoididae)
PlatformMicroplate
SampleTypesCelllysates,EDTAPlasma,HeparinPlasma,Serum,Urine
DetectionMethodFluorometricAssay
AssayTypeDirectEnzymeActivityAssay
UtilityFluorometricassayusedtoquantitativelymeasuretheactivityofglutathioneS-transferaseinsamples.
Sensitivity2.70mU/ml
AssayRange7.81-500mU/ml
PrecisionIntraAssayPrecision:Fourserumsampleswerediluted1:2withAssayBufferandruninreplicatesof16inanassay.ThemeanandprecisionofthecalculatedGSTactivitieswere:Sample1-315.9mU/mL,4.6%CVSample2-221.2mU/mL,5.6%CVSample3-88.2mU/mL,4.2%CVSample4-22.7mU/mL,6.6%CVInterAssayPrecision:Fourserumsampleswerediluted1:2withAssayBufferandruninduplicatesintwentyassaysovermultipledaysbyfouroperators.ThemeanandprecisionofthecalculatedGSTactivitieswere:Sample1-291.7mU/mL,12.6%CVSample2-218.5mU/mL,11.0%CVSample3-89.6mU/mL,10.4%CVSample4-23.0mU/mL,15.9%CV
IncubationTime30minutes
NumberofSamples40samplesinduplicate
OtherResourcesKitBooklet,MSDS

Properties

StorageTemperature4ºC
ShippingTemperatureBlueIce
ProductTypeActivityKits
AssayOverviewTheGlutathioneS-TransferaseActivitykitisdesignedtoquantitativelymeasuretheactivityofGSTpresentinavarietyofsamples.AGSTstandardisprovidedtogenerateastandardcurvefortheassayandallsamplesshouldbereadoffthestandardcurve.Thekitutilizesanon-fluorescentmoleculethatisasubstratefortheGSTenzymewhichcovalentlyattachestoglutathione(GSH)toyieldahighlyfluorescentproduct.MixingthesampleorstandardwiththesuppliedDetectionReagentandGSHandincubatingatroomtemperaturefor30minutesyieldsafluorescentproductwhichisreadat460nminafluorescentplatereaderwithexcitationat390nm.TheactivityoftheGSTinthesampleiscalculated,aftermakingasuitablecorrectionforanydilutionofthesample,usingsoftwareavailablewithmostfluorescenceplatereaders.Wehaveprovideda96wellplateformeasurementbutthisassayisadaptableforhigherdensityplateformats.TheendusershouldensurethattheirHTSblackplateissuitableforusewiththesereagentspriortorunningsamples.
KitOverview
ComponentNo.ItemQuantity/Size
SKC-203ABlackHalfArea96WellPlate1Plate
SKC-203BGlutathioneS-TransferaseStandard50µl
SKC-203CGSTDetectionReagent1vial
SKC-203DDryDMSO2ml
SKC-203EAssayBuffer45ml
SKC-203FGlutathione(GSH)300µl
CiteThisProductGlutathioneS-TransferaseActivityKit(StressMarqBiosciencesInc.,VictoriaBCCANADA,Catalog#SKT-203)

BIOLOGicalDescription

ProductImages

<p>Continuous Kinetic Assay Typical Standard Curve for Glutathione S-Transferase Activity Kit (Enzyme Activity Assay) StressXpress® – SKT-203. Assay Type: Direct. Detection Method: Fluorometric Assay. Assay Range: 7.81 – 500 mU/ml.</p>

ContinuousKineticAssayTypicalStandardCurveforGlutathioneS-TransferaseActivityKit(EnzymeActivityAssay)StressXpress®–SKT-203.AssayType:Direct.DetectionMethod:FluorometricAssay.AssayRange:7.81–500mU/ml.

<p>End-Point Assay Typical Standard Curve for Glutathione S-Transferase Activity Kit (Enzyme Activity Assay) StressXpress® – SKT-203. Assay Type: Direct. Detection Method: Fluorometric Assay. Assay Range: 7.81 – 500 mU/ml.</p>

End-PointAssayTypicalStandardCurveforGlutathioneS-TransferaseActivityKit(EnzymeActivityAssay)StressXpress®–SKT-203.AssayType:Direct.DetectionMethod:FluorometricAssay.AssayRange:7.81–500mU/ml.

<p>Linearity was determined by taking Jurkat cell lysates at 10 x 106 and 0.8 x 106 cells/mL and mixing in the ratios given below. The measured activities were compared to the expected values based on the ratios used.</p>

LinearitywasdeterminedbytakingJurkatcelllysatesat10x106and0.8x106cells/mLandmixingintheratiosgivenbelow.Themeasuredactivitieswerecomparedtotheexpectedvaluesbasedontheratiosused.

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/**/
AlternativeNamesγ-L-Glutamyl-L-cysteinylglycineActivityKit(2S)-2-Amino-5-[[(2R)-1-(carboxymethylamino)-1-oxo-3-sulfanylpropan-2-yl]amino]-5-oxopentanoicacidActivityKit
ResearchAreasCancer,OxidativeStress
ScientificBackgroundTheGlutathioneS-Transferase(GST)familyofisozymesfunctiontodetoxifyandneutralizeawidevarietyofelectrophilicmoleculesbymediatingtheirconjugationwithreducedglutathione(1).HumanGSTsareencodedby5genefamilies,expressinginalmostalltissuesasfourcytosolicandonemicrosomalforms.Dividingthefamilybyisoelectricpoints,thebasicalpha(pI8–11),theneutralmu(pI5–7)andacidicpi(pH<5) classes are populated by additional subclasses, each isozyme displaying differential specificity for given electrophilic molecules (2). Given its pivotal role in ameliorating oxidative stress/damage, GST activity has been repeatedly investigated as a bioMarkerforarthritis,asthma,COPD,andmultipleformsofcancer,aswellasanenvironmentalmarker(3-7).ExaminationofGSTisoformsandactivityinhumancancers,tumorsandtumorcelllineshasrevealedthepredominanceoftheacidicpiclass.FurThermore,thisactivityisthoughttosubstantiallycontributetotheinnateoracquiredresistanceofspecificneoplasmstoanticancertherapy(8,9).
References1.HABIg,W,etal.J.Biol.Chem.1974249(22):7130-7139.
2.Cook,JA,etal.CancerRes.199151:1606-1612.
3.Dalle-Donne,I,etal.200652(4):601-623.
4.Surapneni,KM&VSCGopan.Ind.J.Clin.Biochem.200823(1):41.44.
5.Mohan,SK&OVenkataramana.Ind.J.Med.Sci.200761:9-14.
6.Ferrandina,G.,etal.Ann.Oncol.19978:343-350.
7.Otitoju,O&Onwarah,INE.AfricanJ.Biotech.20076(12)1455-1459.
8.Shea,TC,etal.CancerRes.198848:527-533.
9.Shea,TC,etal.CancerRes.199050:6848-6853.