Product datasheet Anti-C4 binding protein antibody ab83755 2 Images Overview Product name Anti-C4 binding protein antibody Description Rabbit polyclonal to C4 binding protein Specificity This antibody is specific to the alpha chain of the C4 Binding Protein. Tested applications WB, ELISA, IHC-P Species reactivity Reacts with: Human Immunogen Synthetic peptide corresponding to a region within internal sequence amino acids 548-597 (QVLTGKRLMQ CLPNPEDVKM ALEVYKLSLE IEQLELQRDS ARQSTLDKEL) of human C4 binding protein alpha chain precursor Run BLAST with Positive control Run BLAST with MCF7 cell lysate. Properties Form Liquid Storage instructions Shipped at 4°C. Upon delivery aliquot and store at -20°C. Avoid repeated freeze / thaw cycles. Storage buffer Preservative: None Constituents: 2% Sucrose, PBS Purity Immunogen affinity purified Purification notes ab83755 is purified by a peptide affinity chromatography method. Clonality Polyclonal Isotype IgG Applications Our Abpromise guarantee covers the use of ab83755 in the following tested applications. The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user. Application WB Abreviews Notes Use a concentration of 1 µg/ml. Predicted molecular weight: 67 kDa. Good results were obtained when blocked with 5% non-fat dry milk in 0.05% PBS-T. ELISA Use at an assay dependent concentration. 1 Application Abreviews IHC-P Notes Use a concentration of 5 µg/ml. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol. Target Function Controls the classical pathway of complement activation. It binds as a cofactor to C3b/C4b inactivator (C3bINA), which then hydrolyzes the complement fragment C4b. It also accelerates the degradation of the C4bC2a complex (C3 convertase) by dissociating the complement fragment C2a. It also interacts with anticoagulant protein S and with serum amyloid P component. The beta chain binds protein S. Sequence similarities Contains 3 Sushi (CCP/SCR) domains. Cellular localization Secreted. Anti-C4 binding protein antibody images Anti-C4 binding protein antibody (ab83755) at 1 µg/ml + MCF7 cell lysate at 10 µg Secondary HRP conjugated anti-Rabbit IgG at 1/50000 dilution Predicted band size : 67 kDa Observed band size : 57 kDa Additional bands at : <22 kDa. We are Western blot - C4 binding protein antibody unsure as to the identity of these extra bands. (ab83755) 2 IHC image of ab83755 staining in human normal liver formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab83755, 5µg/ml, for 15 mins at room temperature and detected using an HRP Immunohistochemistry (Formalin/PFA-fixed conjugated compact polymer system. DAB paraffin-embedded sections)-Anti-C4 binding was used as the chromogen. The section was protein antibody(ab83755) then counterstained with haematoxylin and mounted with DPX. For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times. Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE" Our Abpromise to you: Quality guaranteed and expert technical support Replacement or refund for products not performing as stated on the datasheet Valid for 12 months from date of delivery Response to your inquiry within 24 hours We provide support in Chinese, English, French, German, Japanese and Spanish Extensive multi-media technical resources to help you We investigate all quality concerns to ensure our products perform to the highest standards If the product does not perform as described on this datasheet, we will offer a refund or replacement. For full details of the Abpromise, please visit http://www.abcam.com/abpromise or contact our technical team. Terms and conditions Guarantee only valid for products bought direct from Abcam or one of our authorized distributors 3