Alternativename:
C3/C5convertase
ProperdinfactorB
Glycine-richbetaglycoprotein
PBF2
SwissProt:
P00751
EC=3.4.21.47
Sendanemailtoinfo@U-proteinexpress.comforbulkquantities
U-proteinExpressBV是一家专门的合同研究机构，提供用于研究和临床前应用的（哺乳动物）重组蛋白和抗体的快速大规模生产，并在位于荷兰乌得勒支乌得勒支科学公园的最先进实验室设施中运营。员工在DNA克隆、哺乳动物细胞培养和蛋白质生产方面经验丰富。自2002年以来，已为生物技术、制药工业和学术界生产了5000多种不同的重组抗体和蛋白质。
U-ProteinExpress的rPEX技术基于HEK293或CHO细胞系中的瞬时蛋白生产，成功率超过90%，可以生产难以表达的蛋白质，如双特异性抗体和抗原。
U-ProteinExpress蛋白纯化原则 蛋白纯化要利用不同蛋白间内在的相似性与差异，利用各种蛋白间的相似性来除去非蛋白物质的污染，而利用各蛋白质的差异将目的蛋白从其他蛋白中纯化出来。每种蛋白间的大小、形状、电荷、疏水性、溶解度和生物学活性都会有差异，利用这些差异可将蛋白从混合物如大肠杆菌裂解物中提取出来得到重组蛋白。
U-ProteinExpress蛋白纯化步骤 分离纯化某一特定蛋白质的一般程序可以分为前处理、粗分级、细分级三步。 U-ProteinExpress常用产品报价单产品名 货号 公司分类 商城分类 美金价 U-protein/Adrenocorticotropichormonemonoclonalantibody/P-Ab0001/100microgram P-Ab0001 Antibodies 功能性抗体 300.00 U-protein/ComplementC2,human/C001/200microgram C001 Complementproteins 其它天然蛋白 390.00 U-protein/Fam3D,human/F002/100microgram F002 Cytokines 细胞因子 425.00 U-protein/Alkalinephosphatase,placenta,human,secreted(glycerolbuffer)/A002/0.25mg A002 Enzymes 其它酶 475.00 U-protein/Beta2-GlycoproteinI/G002/0.1mg G002 Haematology 其他试剂 420.00 U-protein/FSH,Daniorerio/F001/100microgram F001 Hormones 激素 450.00 U-protein/CD36extracellulardomain,human/C007/100microgram C007 Receptors 受体 750.00 U-ProteinExpress/Mannose-bindingproteinC/0.1mg/M001 M001 Complementproteins 其它重组蛋白 470.00
ebiomall.com
>
>
>
>
>
>
>
>
>
>
>
>
本人目前需从电鳗放电器官中提取乙酰胆碱受体蛋白，提纯需要的步骤和电鳗器官都可以提供，有没有提供外包提纯服务的公司或者实验室。
NaturalProteinStopsDeadlyHumanBrainCancerInMice
ScientistsfromJohnsHopkinsandfromtheUniversityofMilanhaveeffectivelyproventhattheycaninhibitlethalhumanbraincancersinmiceusingaproteinthatselectivelyinducespositivechangesintheactivityofcellsthatbehavelikecancerstemcells.ThereportispublishedinNature.
Themostcommontypeofbraincancer-glioblastoma-ismarkedbythepresenceofthesestem-cell-likebraincells,which,insteadoftriggeringthereplacementofdamagedcells,formcancertissue.Stemcells,unlikeallothercellsinthebody,arecapableofformingalmostanykindofcellwhentheright"signals"triggertheirdevelopment.
Fortheirtreatmentexperiment,theresearchersreliedonaclassofproteins,bonemorphogenicproteins,thatcauseneuralstem-cell-likeclusterstolosetheirstemcellproperties,whichinturnstopstheirABIlitytodivide.
Firsttheypretreatedhumanglioblastomacellswithbonemorphogenicprotein4(BMP4),theninjectedthesetreatedcellsintomousebrains.Inmiceinjectedwithcellsthatwerenotpretreated,large,invasivecancersgrew.InthemicewithBMP4-treatedcells,nocancersgrewatall.Threetofourmonthsafterinjection,allmicethatgotuntreatedcellsdied,andnearlyallmicewithBMP4-treatedcellswerealive.
Next,thescientistsdeliveredslow-releaseBMP4-containing"beads"directlyintomousebrainswithimplantedglioblastomacells.Micethatgotemptybeadsdevelopedlargemalignanttumorsanddied.MicewithBMP4beadssurvivedmuchlonger,and80percentsurvivedfourmonthsaftercancercellimplants.
"OurideaistotreatpatientswithBMP4orsomethinglikeitrightaftersurgerytoremoveglioblastomainhopesofpreventingtheregrowthofthecancerandimprovingsurvivaltime,"saysAlessandroOlivi,M.D.,directoroftheDivisionofNeurosurgicalOncologyatHopkinsandacontributortothestudy.
OlivisaysclinicalstudiesusingBMP4couldbeginwithinayearand,ifsuccessful,drugtherapiescouldbeavailabletothepublicwithinthreetofouryears.
"ThiswasproofoftheideathatBMPscouldstopglioblastomabydepletingthestem-cell-likepopulationthatfeedsit,"saysHenryBrem,M.D.,chairmanoftheDepartmentofNeurosurgeryatHopkinsandacollaboratorinthestudy."Thisopensexcitingdoorstofutureresearchintotreatmentsandtherapiesforsuchadevastatingdisease."
