Description | LAMP1(LysosomalAssociatedMembraneProtein1,alsoknownasCD107a,lysosomalassociatedmembraneglycoprotein1,LGP120andLAMPA)isaproteinprimarilyassociatedwiththelysosomalmembrane.InatypicalcellLAMP1isassociatedwithsphericalvesicleslocatednexttothenucleusandthemicrotubuleorganizingcenter(1).LAMP1isfoundonthecellsurfaceoflymphocytesundergoingdegranulation,aprocessinwhichcytoplasmicvesiclesfusewiththeplasmamembrane,andthisphenomenaresultedindiscoveryofLAMP1asaCDprotein.TheLAMP1proteinhasalargeN-terminalregionwhichisinsidethelysosome,hencetopologicallyexternaltothecell,whichisoftenreferredtoasthelumenaldomain(2).Thelumenaldomainconsistsoftwohomologousglobularsegmentsseparatedbyaprolinerichsequence.Nextthereisasinglemembranespanningdomainandashort11aminoacidC-terminalcytoplasmictail.Thistailregioncontains,attheextremeC-terminus,aso-calledYXXImotifwhichisresponsIBLeforthesortingoftheintactmoleculetotheendosomeandlysozome,whereY=tyrosine,I=isoleucineandX=almostanyaminoacid(3).Thismotifisfoundinseveralotherlysosomalproteins,whereitfunctionsinthesameway.Thereare417aminoacidsinthehumanLAMP1molecule,givinganativemolecularweightof44.8kDa.HowevertheN-terminallumenalsegmentofLAMP1isveryheavilyandvariablyglycosylatedduetothepresenceof18N-linkedglycosylationsites,sothatonSDS-PAGEandonWesternblotstheproteinrunsasadiffusebandat90-120kDa.AntibodiestoLAMP1arethereforeexcellentMarkersoflysosomesinmammaliancells,thoughsomeLAMP1mayalsobeseenonlateendosomesandontheplasmamembrane. |
Antigen | RecombinantLAMP1expressedandpurifiedfromE.coli. |
AntibodyType | Monoclonal |
Isotype | IgG1 |
Clone | 5H6 |
OtherNames | LysosomalAssociatedMembraneProtein1,alsoknownasCD107a,lysosomalassociatedmembraneglycoprotein1,LGP120andLAMPA |
Producedin | Mouse |
Applications | WesternBlotting(WB),Immunocytochemistry(IC),FlowCytometry.Adilutionof1:5,000-1:10,000isrecommendedforWB.Adilutionof1:1,000-1:2,000isrecommendedforIC.Use~2ugper10^6cellsforFlowCytometry.Biosensisrecommendsoptimaldilutions/concentrationsshouldbedeterminedbytheenduser. |
Specificity | Theantibodyreactswithadiffusebandat~90kDato120kDabyWesternblotonHeLacellextract.Ithasalsobeenusedsuccessfullyforimmunocytochemistryshowingstrongpunctatecytoplasmicstainingcorrespondingtolysosomesandlateendosomes. |
SpeciesAgainst | Human,bovine,porcine,ratandmouse.Itisexpectedthatitwillworkonothermammaltissues. |
AntibodyAgainst | LysosomalAssociatedMembraneProtein1[LAMP1] |
Form | LyophilizedfromPBS.Contains5%trehalose. |
Appearance | Whitepowder |
Reconstitution | Reconstituteinsteriledistilledwater.Centrifugetoremoveanyinsolublematerial. |
Storage | Afterreconstitutionoflyophilizedantibody,aliquotandstoreat-20°CforahigherstABIlity.Avoidfreeze-thawcycles. |
ExpiryDate | 12monthsafterpurchase |
GeneralReferences | 1.Matteoni,R.andKreiss,T.E.Translocationandclusteringofendosomesandlysosomesdependsonmicrotubules.J.CellBiol.105:1253-1265(1987).2.HoweCL,GrangerBL,HullM,GreenSA,GabelCA,HeleniusA,MellmanI.Derivedproteinsequence,oligosaccharides,andmembraneinsertionofthe120-kDalysosomalmembraneglycoprotein(lgp120):identificationofahighlyconservedfamilyoflysosomalmembraneglycoproteins.ProcNatlAcadSciUSA.85:7577-81(1988).3.RohrerJ,SchweizerA,RussellD,KornfeldS.ThetargetingofLamp1tolysosomesisdependentonthespacingofitscytoplasmictailtyrosinesortingmotifrelativetothemembrane.JCellBiol.132:565-76(1996). |
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