{"product_id":"human-c1q-protein-flag-tag-s0a6078","title":"Human C1q Protein, Flag Tag","description":"\u003ch4\u003eProduct Specification\u003c\/h4\u003e\u003cdiv class=\"responsive-table product-detail-table details-table\"\u003e\n\u003cbr\u003e\u003ctable style=\"width: 100%; height: auto;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eSpecies\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003eHuman\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eSynonyms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003eComplement C1q\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eAccession\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003eP02745、P02746、P02747\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eAmino Acid Sequence\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003e\u003cp\u003eProtein sequence (P02745, Glu23-Ala245)EDLCRAPDGKKGEAGRPGRRGRPGLKGEQGEPGAPGIRTGIQGLKGDQGEPGPSGNPGKVGYPGPSGPLGARGIPGIKGTKGSPGNIKDQPRPAFSAIRRNPPMGGNVVIFDTVITNQEEPYQNHSGRFVCTVPGYYYFTFQVLSQWEICLSIVSSSRGQVRRSLGFCDTTNKGLFQVVSGGMVLQLQQGDQVWVEKDPKKGHIYQGSEADSVFSGFLIFPSAProtein sequence (P02746, Gln28-Ala253)QLSCTGPPAIPGIPGIPGTPGPDGQPGTPGIKGEKGLPGLAGDHGEFGEKGDPGIPGNPGKVGPKGPMGPKGGPGAPGAPGPKGESGDYKATQKIAFSATRTINVPLRRDQTIRFDHVITNMNNNYEPRSGKFTCKVPGLYYFTYHASSRGNLCVNLMRGRERAQKVVTFCDYAYNTFQVTTGGMVLKLEQGENVFLQATDKNSLLGMEGANSIFSGFLLFPDMEAProtein sequence (P02747, Asn29-Asp245, with C-Flag Tag)NTGCYGIPGMPGLPGAPGKDGYDGLPGPKGEPGIPAIPGIRGPKGQKGEPGLPGHPGKNGPMGPPGMPGVPGPMGIPGEPGEEGRYKQKFQSVFTVTRQTHQPPAPNSLIRFNAVLTNPQGDYDTSTGKFTCKVPGLYYFVYHASHTANLCVLLYRSGVKVVTFCGHTSKTNQVNSGGVLLRLQVGEEVWLAVNDYYDMVGIQGSDSVFSGFLLFPD\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eExpression System\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003eCHO Stable Cells\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eMolecular Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003e\u003cp style=\"margin-bottom: 0px;\"\u003ePredicted MW: 23.7 kDa (C1qA)\u0026amp;23.7 kDa (C1qB)\u0026amp;22.8 kDa (C1qC)Observed MW: 24, 28, 30 kDa\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003ePurity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003e＞90% by SDS-PAGE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eEndotoxin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003e\u0026lt;1EU\/μg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eConjugation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003eUnconjugated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003ePhysical Appearance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003eLyophilized Powder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eStorage Buffer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003e\u003cp\u003eLyophilized from a 0.2 μm filtered solution of PBS, pH7.4 with 3% trehalose.\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eReconstitution\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003eReconstitute no more than 1 mg\/mL according to the size in deionized water after rapid centrifugation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 22%;\"\u003e\u003cstrong\u003eStability \u0026amp; Storage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78%;\"\u003e\u003cp\u003e12 months from date of receipt, -20 to -70 °C as supplied.\u003cbr\u003e6 months, -20 to -70 °C under sterile conditions after reconstitution.\u003cbr\u003e1 week, 2 to 8 °C under sterile conditions after reconstitution.\u003cbr\u003ePlease avoid repeated freeze-thaw cycles.\u003c\/p\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e\u003ch4\u003eBackground\u003c\/h4\u003e\u003cdiv\u003e\u003cp\u003e\u003cspan\u003eComplement C1q is the recognition subunit of the classical complement pathway. This ~460 kDa hexameric protein has a unique \"bouquet of tulips\" structure, with six globular heads connected to a collagen-like stalk. Each head binds to ligands such as antibody Fc regions (IgG1, IgG2, IgG3, and IgM), pentraxins, and apoptotic cells. This binding activates C1r and C1s proteases, triggering the complement cascade that drives opsonization, inflammation, and pathogen lysis. Beyond immunity, C1q is essential for clearing apoptotic cells and immune complexes, maintaining self-tolerance. C1q deficiency is strongly linked to systemic lupus erythematosus (SLE), highlighting its critical role in immune homeostasis.\u003c\/span\u003e\u003c\/p\u003e\u003c\/div\u003e","brand":"Starter","offers":[{"title":"10μg","offer_id":42920108654667,"sku":"S0A6078-10μg","price":220.0,"currency_code":"USD","in_stock":true},{"title":"25μg","offer_id":42920108687435,"sku":"S0A6078-25μg","price":420.0,"currency_code":"USD","in_stock":true},{"title":"50μg","offer_id":42920108720203,"sku":"S0A6078-50μg","price":670.0,"currency_code":"USD","in_stock":true},{"title":"100μg","offer_id":42920108752971,"sku":"S0A6078-100μg","price":1000.0,"currency_code":"USD","in_stock":true},{"title":"500μg","offer_id":42920108785739,"sku":"S0A6078-500μg","price":2835.0,"currency_code":"USD","in_stock":true},{"title":"1mg","offer_id":42920108818507,"sku":"S0A6078-1mg","price":4670.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/8375\/1499\/files\/AntBioImage_b9091342-b1ed-4484-a453-b9ad07a67453.png?v=1784545248","url":"https:\/\/www.antbioinc.com\/products\/human-c1q-protein-flag-tag-s0a6078","provider":"AntBio","version":"1.0","type":"link"}