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ProductName:pSF-STE5-URA3
ProductCode:OG535
Size(bp):6520bp
BacterialAntibioticSelection:KanR
OriginandCompatibility:pUChighcopyderivedfrompBR322
BacterialCopyNumber:500-700percell
Promoter:YeastscaffoldproteinSTE5
ThisplasmidisdesignedforlowlevelexpressionofproteinsinSaccharomycescerevisiaeusingtheSTE5promoter.Thisistheweakestofthepromotersthatwesellforexpressioninyeast.Theplasmidalsocontainsagenethatisanessentialcomponentoftheuracilsynthesispathway.Thisallowsfortheselectionofyeastcellsthataredefectiveinthisgeneinmediathatdoesnotcontainuracil.
PromoterExpressionLevel:ThisplasmidcontainstheyeastscaffoldproteinSTE5promoter.ItistheweakestpromoterthatweprovideforexpressioninSaccharomycescerevisiae.
Thisplasmidcontainsthreealternativetranscriptionterminatorsforyeastbacterialandbacteriophage(T7)expression.Thismeansthatonlythepromoterneedstobechangedtoaltertheexpressionsystemyouareusing.Wesellmultiplepromotersthatcanbeusedineachofthesesystems.Thepresenceofeachterminatordoesnotreduceexpressioninthealternativesystems.
ThisplasmidhasbeendesignedtobecompatIBLewitharangeofcloningtechniques.Themultiplecloningsitecontainsarangeofstandardcommonlyusedrestrictionsitesforcloning.UsingthesesitesgenescanbeinsertedusingstandardcloningmethodswithDNAligase.Othermethodssuchasligaseindependentcloning(LIC)GibsonAssemblyInFusionHDorSeamlessGeneArtcanalsobeusedandbecauseallofourplasmidsarebasedonthesamebackbonethesamemethodcanbeusedforcloningintoallofourcataloguevectors.
Multiplecloningsitenotes:ThereareafewimportantsiteswithintheMCS.TheseincludetheNcoIsitetheXbaIsiteandtheBsgIandBseRIsites.TheNcoIsitecontainsastartcodonthatisimmediatelydownstreamofbothaKozakandShine-Dalgarnoribosomalbindingsite.Theseallowforoptimalpositioningofgeneswhenthestartcodonisplacedinthislocation.IfthisisnotrequiredandyouwishtouseadownstreamsiteforgenecloningyoucanremovetheNcoIsitebycleavingtheplasmidwithKpnI.
TheXbaIsitecontainsastopcodon.ThisstopcodonispositionedinaspecificpositioninrelationtotheBsgIandBseRIsitesthatareimmediatelydownstream.WheneitherBseRIorBsgIcleavetheplasmidtheyproduceaTAoverhangfromthestopcodonintheXbaIsitethatiscompatiblewithallofourpeptidetagplasmidscutwiththesamesites.BseRIandBsgIsitesarenon-palindromicandcleaveadefinednumberofbasesawayfromtheirbindingsite.
WheneverwecloneageneintoourmultiplecloningsitewealwayspositionthestartandstopcodoninthesamepositionsintheMCS.IfthestartandendsofthegenesarenotcompatiblewithNcoIandXbaIweextendthesequencetothenearestexternalsitesbutkeepthestartandstopcodonslocationsconsistent.
ThisproductispartofourSnapFastplasmidrange,formoreinformationontheIntellectualpropertystatusofthisplasmidpleaseclickhere
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