Cat# | EG-1001(oldcatalog#:RP-7) |
Discount | $100DiscountCodeforYourFirstOrderof1mgCreRecombinase:CreDiscount Discountforswitchingfromcompetitors'product:$150.EmailtoTechSupportts@Excellgen.comfordiscountcode. |
Description | Crerecombinase,oftenabbreviatedtoCre,isaTypeItopoisomerasefromP1bacteriophagethatcatalyzessite-specificrecombinationofDNAbetweenloxPsites.Thisenzymedoesnotrequireanyenergycofactors,andCre-mediatedrecombinationquicklyreachesequilibriumbetweensubstrateandreactionproducts.TheloxPrecognitionelementisa34basepair(bp)sequencecomposedoftwo13bpinvertedrepeatsflankingan8bpspacerregionwhichconfersdirectionality.RecombinationproductsaredependentonthelocationandrelativeorientationoftheloxPsites.TwoDNAspeciescontainingsingleloxPsiteswillbefusedwhilstDNAbetweenloxPsitesinthesameorientationwillbeexcisedincircularformandDNAbetweenopposingloxPsiteswillbeinvertedwithrespecttotherestoftheDNA. Crerecombinaseisusedasatooltomodifygenesandchromosomes.InthisapproachtheCrerecombinaseisusedtodeleteasegmentofDNAflankedbyLoxPsites(aka'floxed')inanexperimentalanimal.Ithasbeenusedtogenerateanimalswithmutationslimitedtocertaincelltypes(tissue-specificknockout)oranimalswithmutationsthatcanbeactivatedbydrugadmiNISTration(inducIBLeknockout)inanumberoftransgenicspecies.TheavailABIlityoftransgeniclineswithtissuespecificorinducibleCreexpressionpermitsresearcherstoinactivateoractivateageneofinterestsimplybybreedingafloxedanimaltopre-existingCre-transgenics.OneexampleofaninducibleCrerecombinasesystemistheCre-ER(ER=EstrogenReceptor)systeminwhichintraperitonealinjectionoftamoxifenwillcausedose-dependentexcisionofthefloxedsite(i.e.willinactivatethegeneofchoice). RecombinantCrerecombinase(TAT-Cre)waspurifiedfromanE.colistraincarryinganengineeredplasmidencodingenhancedformofCreRecombinasefrombacteriophageP1.ThisCrerecombinasehasanN-terminal6XHistag,aTatpeptide(GRKKRRQRRRPPAGTSVSL)andanNLSsequence(PKKKRKV).HTNCisthemosteffectiveproteinintransduction(invivo)andsubsequentrecombinationcomparedtootherformsofCrerecombinases,e.g.,HNC,TCH6,HC,HNCM,CH.Incubationoffibroblastreportercellswith1μMHTNCfor1to2hourscanresultintranductionof60~90%ofthecells*.Additionof100μMchoroquinetoculturemediummay furtherenhancetransductionandrecombination. *Usethispagetocalculateconcentrationrequiredforcultured cells: http://www.excellgen.com/pub/mw_2_moles.html |
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Properties | Concentration:2,5,or10mg/ml. MolecularWeight:43kDa QC:Tat-Creinduced80~100%recombinationefficienciesinHEK293T-Crereportercells.HEK293T-cellsweretransfectedwithreporterplasmidDNA:LoxP-RFP-Stop-LoxP-GFP,thenadd1μMpurifiedTat-Creprotein. Fig1:0:beforeaddingTat-Cre;1to5:1to5daysaftertransductionwithTat-Cre. EndotoxinLevels:<0.1EU/μg Purity:>98%bySDS-PAGEandHPLCanalysis. |
UnitDefintion | Astandardof100UnitsisdefinedastheamountofTAT-CRE(μg) in1.0mLoftissueculturemediumthatisrequiredtoinduce50% GFPexpressioninaHEK293Treportercelllineassay. |
Stability | 2yearsat-80oC.6monthsat-20oC.Upto3weeksat4oC |
Citations |
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Storage | -20ºC~-80ºC |
Shipping | dryice |
德国Excellgen特色产品包括Cre重组蛋白、ExcellScript 耐热 M-MuLV (MMLV) 逆转录酶、FLP重组蛋白、GeneExpresso™ Max转染试剂。
No.
货号 | 规格 | |||
Excellgen | GeneExpresso™Max Transfection Reagent | 2 | EG-1089 | 1ml |
Excellgen | Cre Recombinase, TAT-Cre (Tat-NLS-Cre, HTNC, HTNCre) | 4 | EG-1069 | 1 mg |
Excellgen | Human Protein Kinase Alpha, PKA, C alpha, cAMP-dependent protein 1 mg | |||
Excellgen | serine/threonine kinase 33, STK33 | 7 | EG-261 | 100 µg |
Excellgen | Alpha-tubulin Rabbit Polyclonal Antibody | 9 | EG-1000 | 100 µg |
Excellgen | Recombinant Human Interferon alpha-2b, IFN alpha 2b, (rHuIFN-α2b) | 11 | EG-156 | 100 µg |
Excellgen | Thermus aquaticus Muts DNA mismatch repair protein, 6X His-Taq-Muts | 13 | EG-266 | 100 µg |
Excellgen | Flag Tag Mouse Monoclonal Antibody (2C5) | 15 | EG-277 | 100 µg <span line-height:2;"="" style="outline: none; font-size: 14px; font-family: "Microsoft YaHei"; line-height: 2;"> |