{"product_id":"recombinant-human-cr2-cd21-protein-rp01987","title":"Recombinant Human CR2\/CD21 Protein - RP01987","description":"\u003cp\u003eRecombinant Human CR2\/CD21 Protein\u003c\/p\u003e\n\n\u003cp\u003eSizes: 20ug, 50ug, 100ug\u003c\/p\u003e\n\n\u003cp\u003eCatalogue Numbers: RP01987-20, RP01987-50, RP01987-100\u003c\/p\u003e\n\n\u003cp\u003eCitations, Manuals and MSDS Available upon request.\u003c\/p\u003e\n\n\u003cp\u003eDescription: Recombinant Human CR2\/CD21 Protein is produced by HEK293 cells expression system. The target protein is expressed with sequence (Ile21-Arg971) of Human CR2\/CD21 (Accession #NP_001868.2) fused with Avi and His tag at the C-terminus.\u003c\/p\u003e\n\n\u003cp\u003eAlternate Names: CR2, C3DR,  Complement receptor type 2, Cr2, Complement C3d receptor, Epstein-Barr virus receptor, EBV receptor, CD21\u003c\/p\u003e\n\n\u003cp\u003eSWISS: P20023\u003c\/p\u003e\n\n\u003cp\u003eGeneID: 1380\u003c\/p\u003e\n\n\u003cp\u003eSpecies: Human\u003c\/p\u003e\n\n\u003cp\u003ePurity: ≥ 90 % as determined by SDS-PAGE.\u003c\/p\u003e\n\n\u003cp\u003eStorage: Store at -20℃. Store the lyophilized protein at -20℃ to -80 ℃ up to 1 year from the date of receipt. After reconstitution, the protein solution is stable at -20℃ for 3 months, at 2-8℃ for up to 1 week.\u003c\/p\u003e\n\n\u003cp\u003eBackground: CD21, also known as Complement component (3d \/ Epstein Barr virus) receptor 2 and CR2, is a member of the CD system and is a protein involved in complement system. CD21 is present on all mature B-cells and some T-cells and follicular dendritic cells. CD21 on mature B-cells form a complex called the B cell receptor complex with two other membrane proteins, CD19 and CD81. CD21 has a function in the complement system through serving as the cellular receptor specific for ligands such as C3 and C4 which can be attached to foreign macromolecules in order to remove or uptake them. This results in B-cells having enhanced response to the antigen.\u003c\/p\u003e\n\n\u003cp\u003eSource: HEK293 cells\u003c\/p\u003e\n\n\u003cp\u003eTag: C-Avi\u0026amp;6His\u003c\/p\u003e\n\n\u003cp\u003eFormulation: Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.\u003c\/p\u003e\n\n\u003cp\u003eAntigen Sequence: ISCGSPPPILNGRISYYSTPIAVGTVIRYSCSGTFRLIGEKSLLCITKDKVDGTWDKPAPKCEYFNKYSSCPEPIVPGGYKIRGSTPYRHGDSVTFACKTNFSMNGNKSVWCQANNMWGPTRLPTCVSVFPLECPALPMIHNGHHTSENVGSIAPGLSVTYSCESGYLLVGEKIINCLSSGKWSAVPPTCEEARCKSLGRFPNGKVKEPPILRVGVTANFFCDEGYRLQGPPSSRCVIAGQGVAWTKMPVCEEIFCPSPPPILNGRHIGNSLANVSYGSIVTYTCDPDPEEGVNFILIGESTLRCTVDSQKTGTWSGPAPRCELSTSAVQCPHPQILRGRMVSGQKDRYTYNDTVIFACMFGFTLKGSKQIRCNAQGTWEPSAPVCEKECQAPPNILNGQKEDRHMVRFDPGTSIKYSCNPGYVLVGEESIQCTSEGVWTPPVPQCKVAACEATGRQLLTKPQHQFVRPDVNSSCGEGYKLSGSVYQECQGTIPWFMEIRLCKEITCPPPPVIYNGAHTGSSLEDFPYGTTVTYTCNPGPERGVEFSLIGESTIRCTSNDQERGTWSGPAPLCKLSLLAVQCSHVHIANGYKISGKEAPYFYNDTVTFKCYSGFTLKGSSQIRCKADNTWDPEIPVCEKETCQHVRQSLQELPAGSRVELVNTSCQDGYQLTGHAYQMCQDAENGIWFKKIPLCKVIHCHPPPVIVNGKHTGMMAENFLYGNEVSYECDQGFYLLGEKKLQCRSDSKGHGSWSGPSPQCLRSPPVTRCPNPEVKHGYKLNKTHSAYSHNDIVYVDCNPGFIMNGSRVIRCHTDNTWVPGVPTCIKKAFIGCPPPPKTPNGNHTGGNIARFSPGMSILYSCDQGYLLVGEALLLCTHEGTWSQPAPHCKEVNCSSPADMDGIQKGLEPRKMYQYGAVVTLECEDGYMLEGSPQSQCQSDHQWNPPLAVCRSR\u003c\/p\u003e\n\n\u003cp\u003eEndotoxin: \u0026lt; 1 EU\/μg of the protein by LAL method.\u003c\/p\u003e\n\n\u003cp\u003eResearch Use Only\u003c\/p\u003e","brand":"ABclonal","offers":[{"title":"20ug","offer_id":45198378369203,"sku":"RP01987-20","price":210.0,"currency_code":"CAD","in_stock":true},{"title":"50ug","offer_id":45198378401971,"sku":"RP01987-50","price":315.0,"currency_code":"CAD","in_stock":true},{"title":"100ug","offer_id":45198378434739,"sku":"RP01987-100","price":504.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/9482\/6376\/files\/download_458dd558-8a3b-4011-bec9-34b8dc55e27c.png?v=1766961450","url":"https:\/\/afsbio.com\/products\/recombinant-human-cr2-cd21-protein-rp01987","provider":"AFSBio Inc.","version":"1.0","type":"link"}