Description | Doublecortin(DCX,alsoknownasDoublin,Lissencephalin-X,DBCNandLis-X)wasoriginallydiscoveredsincedefectsinthegeneencodingitarecausativeofX-linkedlissencephaly,araregroupofbrainmalformationsresultinginasmoothcerebralcortexcausedbyaberrantneuronalmigrationduringdevelopment(1,2).ThenameDoublecortincomesfromtheunusuallayeringofthecortexinthisformoflissencephaly,whichappearstohaveaseconddeepcorticallayerofneurons.Thislayerconsistsofneuronswhichdidnotmigratefromthesubventricularzonetothenormalcorticallayer.Patientswiththisdefectsufferfromseizuresandmentalretardation.FourproteinsencodedbytheDCXproducebandsofabout35kDaand45kDaonWesternblots.The45kDaformisknownasLis-XAwhilethesmallerformsaregeneratedbyalternatetranscription,areallmissingthefirst81aminoacidsofLis-XA,andarereferredtoasLis-XB,Lis-XC,Lis-XD.Thereareminoraminoacidsequencedifferencesbetweenthesethreesmallerisoforms.Alloftheseproteinscontaintwoso-calledDoublecortindomains,eachabout90aminoacidslong,whicharebelievedtofunctioninbindingtomicrotubules,aC-terminalserineandprolinerichregionwhichmaybecomephosphorylatedinvivo.DCXisexpressedveryearlyinneuronaldevelopment,asneuroblastsbecomepost-mitotic,butislostasneuronsmature.DevelopingneuronsstarttoloseDCXexpressionaboutthetimethattheybegintoexpressNeuN.AntibodiestoDCXcanbeusedtoseeifneurogenesisistakingplace. |
Antigen | FulllengthrecombinanthumanLis-AisoformofDoublecortinpurifiedfromE.coli. |
AntibodyType | Monoclonal |
Isotype | IgG2a |
OtherNames | Doublin,Lissencephalin-X,DBCNandLis-X |
Producedin | Mouse |
Applications | Immunohistochemistry(IHC)andWesternBlotting(WB).Adilutionof1:5,000-1:10,000isrecommendedforWB.Adilutionof1:500-1:1000isrecommendedforIHC.Theoptimaldilutionshouldbedeterminedbytheenduser. |
Specificity | Theantibodyreactswithtwobandsat~45kDaand~35kDawhichshowsthatthemouseanti-DCXantibodybindstoanepitopeintheregionofDCXsharedbyLis-A,andLis-B,Lis-CandLis-D,theCterminal360aminoacidsofLis-A.IthasalsobeenusedsuccessfullyforimmunocytochemistryandisanexcellentMarkerfordevelopingneurons. |
SpeciesAgainst | Rat.Itisexpectedthatitwillworkonothermammaltissues. |
AntibodyAgainst | Doublecortin |
Form | LyophilizedfromPBS.Contains5%trehalose. |
Appearance | Whitepowder |
Reconstitution | Reconstituteinsteriledistilledwater.Centrifugetoremoveanyinsolublematerial. |
Storage | Afterreconstitutionoflyophilizedantibody,aliquotandstoreat-20°CforahigherstABIlity.Avoidfreeze-thawcycles. |
ExpiryDate | 12monthsafterpurchase |
GeneralReferences | 1.desPortesV,PinardJM,BilluartP,VinetMC,KoulakoffA,CarriéA,GelotA,DupuisE,MotteJ,Berwald-NetterY,CatalaM,KahnA,BeldjordCandChellyJ.AnovelCNSgenerequiredforneuronalmigrationandinvolvedinX-linkedsubcorticallaminarheterotopiaandlissencephalysyndrome.Cell92:51-61(1998).2.GleesonJG,AllenKM,FoxJW,LampertiED,BerkovicS,SchefferI,CooperEC,DobynsWB,MinnerathSR,RossMEandWalshCA.Doublecortin,abrain-specificgenemutatedinhumanX-linkedlissencephalyanddoublecortexsyndrome,encodesaputativesignalingprotein.Cell92:63-721998.3.JinJ,SuzukiH,HiraiS,MikoshibaKandOhshimaT.JNKphosphorylatesSer332ofdoublecortinandregulatesitsfunctioninneuriteextensionandneuronalmigration.DevNeurobiol.70:929-422010. |
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