PlasmidInfo:
PlasmidInformation
ProductName:pSF-CMV-NH2-His-EKT3
ProductCode:OG332
Size(bp):4288bp
BacterialAntibioticSelection:KanR
OriginandCompatibility:pUChighcopyderivedfrompBR322
BacterialCopyNumber:500-700percell
Promoter:Cytomegalovirus(CMV)immediateearlypromoter
PlasmidPurpose:
ThisvectoraddsaHistagtotheN-terminusofaproteinthatisencodedwithinthemultiplecloningsite.Thistagallowsthepurificationofataggedproteinbybindingtometalmatricessuchasnickelorcobalt.TheHisisfollowedbyanenterokinasecleavagesite(DDDDK)withinitthatallowstheremovaloftheN-terminaltagifrequired.Itcleavesafterthelysineresidue.
PromoterExpressionLevel:ThisplasmidcontainsthemammalianCMVpromotertodrivegeneexpression.WehavetestedallofourmammalianpromotersinarangeofcelltypesandCMVisconsistentlythestrongestinthosewehavestudied.HowevertherearemanyreportsoftheCMVpromoterdemonstratingsilencingbymethylationinlong-termculture.ForthisreasonwestockarangeofotherpromotersthatarecompatIBLewiththisplasmidandareavailableonrequest.
SequenceandMap:
OtherInfo:
TranscriptionTermination:Thisplasmidcontainsthreealternativetranscriptionterminatorsformammalianbacterialandbacteriophage(T7)expression.Thismeansthatonlythepromoterneedstobechangedtoaltertheexpressionsystemyouareusing.Wesellmultiplepromotersthatcanbeusedineachofthesesystems.Thepresenceofeachterminatordoesnotreduceexpressioninthealternativesystems.
Cloning:
CloninginaGene:Thisvectorhasbeendesignedtoallowtheadditionofapeptidetagtotheendofaproteinofinterestusingstandardcloningtechniques.
MultipleCloningSiteNotes:ThereisastartcodonintheNcoIsitecanberemovedbydigestionwithKpnIifrequired.TheMCSforgeneinsertionsextendsfromNotItoXbaIhoweverthetagresidesbetweentheNotIandHindIIIsites.ThereareShine-DalgarnosequencesandKOZAKsequencesalignedwiththestartcodonofthepeptidetag.
TheClaItoNheIsiteshaveotherfunctionssuchasaddingC-terminalpeptidetagssecondpromotersorIRESexpressioncomponents.TheBsgIandBseRIrestrictionsitescleavewithinthestopcodonintheXbaIsiteandallowtheretrospectivefusionofC-terminalpeptidetagssequencesifthestopcodonisplacedinthisposition.
IPStatus:
IntellectualPropertyStatusThisproductispartofourSnapFastplasmidrange,formoreinformationontheIntellectualpropertystatusofthisplasmidpleaseclickhere
