Anti-C3 antibody [11H9] (ab11862)

We do not have any IHC data, either in-house or from references, for samples fixed with zinc salts fixatives, and have not received any feedback from customers who have used fixatives other than PFA and formalin. We have no reason to think that this C3 antibody will not stain samples fixed with zinc salts, or mixtures of zinc salts and formaldehyde.

Thank you for contacting us.

The antibody has been published in several studies that used it for detection of C3 in mouse samples but not, to our knowledge, in any studies of autoimmune disease or for detection of C3 in human samples.

Please do not hesitate to contact us if you need any more advice or information.

Thank you for your enquiry and your interest in our products.
I have checked this product (ab19187: Anti-C3 antibody) for you and according to the on-line datasheet it has only been tested in Immunoelectrophoresis.
However, we have an alternative antibody in our catalogue ab11862 which recognizes murine C3 and has been characterized for IHC-P (immunohistochemistry on formalin-fixed paraffin-embedded tissue sections).
If you need any further assistance, please do not hesitate to contact me.

Thank you for your enquiry.

I am sorry to confirm that the C3 antibodies that detect the C3beta subunit have not been tested in WB, human and mouse.

We do have ab11862 Anti-C3 antibody [11H9] which has been tested in WB and human and detects C3, C3b, iC3b and C3b. It should not detect C3 alpha subunit on its own.

I have checked the alignment of the immunogen with the mouse protein, and this is 77%. We recommend that alignment should be over 85% to predict that an antibody will detect in a different species. 77% is fairly high and I would suggest there is still a possibility of some crossreactivity with mouse. However, I am sorry we are not able to guarantee this without testing.

If the customer would like to try the antibody in mouse as part of our testing discount program, please do not hesitate to let me know and I will be pleased to arrange a discount code for them.

I hope this will be helpful. If you have any further questions, please do not hesitate to contact me.

I am very pleased to hear you would like to accept our offer and test ab6678 in rabbit, ab8878 in IHC-P, and ab11862 in rabbit. These codes will give you 1 free primary antibody per code before the expiration date. To redeem this offer, please submit an Abreview for each antibody and include the code in the “Additional Comments” section so we know the Abreview is for this promotion. For more information on how to submit an Abreview, please visit the site: www.abcam.com/Abreviews.

Remember, we publish both positive and negative Abreviews on our datasheets so please submit the results of your tests. The codes will be active once the Abreviews have been submitted and can be redeemed in one of the following ways: 1) Call to place your order and mention the code to our customer service department; 2) Include the code in your fax order; 3) Place your order on the web and enter the promotional code.

Any feedback that you can provide will be greatly appreciated, whether positive or negative. If you have any further questions, please do not hesitate to contact us. We look forward to receiving your Abreview and wish you luck with your research.

The terms and conditions applicable to this offer can be found here: www.abcam.com/collaborationdiscount.

Thank you for your enquiry. The mature protein C3 has a molecular weight of approximately 190 kDa. The complement factor C3 consists of an alpha- and a beta-chain, linked by disulfide bond. C3 convertase activates C3 by cleaving the alpha chain, releasing C3a anaphylotoxin and generating C3b (alpha chain and beta chain). C3b has a molecular weight of approximately 185 kDa. C3b is rapidly split in two positions by factor I and a cofactor to form iC3b (inactivated C3b) and C3f which is released. iC3b has a molecular weight of approximately 182 kDa. We hope this information will be helpful to you. If you have further questions please do not hesitate to contact us.

Thank you for your patience and your e-mail regarding ab11862 monoclonal antibody to mouse C3. As a positive control affinity-purified mouse C3 was used. For the purification of mouse C3 purified antibodies were coupled to CNBr-activated Sepharose 4B. EDTA-plasma from heparinized C57BL/6 mice was applied to the column in the presence of protease inhibitor(PMSF, 10 uM). Bound complement components were eluted with 50 mM diethylamine (pH 11.5) and immediately neutralized with 1/10 volume of 500 mM NaH2PO4. Contamination by rat mAbs were removed from the eluates by protein G sepharose 4 Fast Flow in a batch procedure. For more information please see: 1) Kremmer, E et al; Monoclonal antibodies to complement complement component without the need of their prior purification. II Antibodies to mouse C3 and C4. Hybridoma 1990, 9: 309. Please note we did not receive any other complaints regarding this lot, however we take this complaint very seriously. Please contact us again if you require further assistance and do not have success with the antibody.

Thank you for your enquiry. I hope that all is well?The monoclonal antibody 11H9 reacts with C3, C3b, iC3b and C3d. Since C3d is a fragment of the alpha chain we presume the antibody reacts with the alpha chain of C3; however it has not been specifically verified. Have a good week end.