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Chemical/ Small Molecule corresponding to Polyethylene glycol conjugated to Keyhole Limpet Haemocyanin (KLH). KLH-PEG with a terminal methoxy group.
This product is a recombinant rabbit monoclonal antibody.
The smallest PEG molecule which our antibody can detect is PEG750. Based on customer feedback, the largest PEG molecule detected is PEG 40K. Additionally, ab53449 detects both linear and branched PEG based on our in-house ELISA testing.
Tween 20 usage: Tween 20 is a detergent that can interfere with ELISA and potentially other applications (often used in antibody dilution buffers, such as TBST) when using anti-PEG products. This is also the same case for other polyoxyethylene detergents. Therefore, it is recommended to avoid Tween 20 and other polyoxyethylene detergents
when performing ELISA using anti-PEG products.
Produced using Abcam’s RabMAb® technology. RabMAb® technology is covered by the following U.S. Patents, No. 5,675,063 and/or 7,429,487.
Learn more about PEG RabMAb® primary antibodies and kit - PEG RabMAb Product Portal Page
We are constantly working hard to ensure we provide our customers with best in class antibodies. As a result of this work we are pleased to now offer this antibody in purified format. We are in the process of updating our datasheets. The purified format is designated ‘PUR’ on our product labels. If you have any questions regarding this update, please contact our Scientific Support team.
Alternative versions available:
Our Abpromise guarantee covers the use of ab53449 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
For unpurified use at 1/50 - 1/100. Images of positive IHC with this monoclonal antibody, clone PEG-B-47b, are on the ab51257 datasheet.
|WB||1/50000. Predicted molecular weight: 2 kDa.
For unpurified use at 1/5000 - 1/20000.
|ELISA||Use a concentration of 1 µg/ml.
Coating plates for ELISA: 0 to 500 ng/ml.
For unpurified use at 0.5µg/ml, coating plates for ELISA: 5 to 10 ug/ml.
ELISA assay using 5ug/mL Anti-AFP RabMAb as the capture antibody and 0.5 ug/mL Anti-PEG-47-Biotin RabMAb (unpurified ab53449) as the detection antibody. HRP-avidin (1/3000) used for anti-PEG-47 detection. This ELISA assay could detect YCA1017 peptide-PEG antigen at a concentration as low as 0.9 ng/mL.
Sandwich ELISA assay using 5ug/mL Anti-GCSF as the capture antibody and 0.5 ug/mL Anti-PEG-47-Biotin RabMAb (unpurified ab53449) as the detection antibody. HRP-avidin (1/3000) used for anti-PEG-47 detection. This ELISA assay could detect GCSF-PEG antigen at a concentration as low as 0.9 ng/mL.
Direct ELISA antigen dose-response curve using purified ab53449. Antigen concentration of 0-500 ng/mL. A peroxidase-conjugated steptavidin (1/1000) was used.
Sandwich ELISA antigen dose-response curve using purified ab53449.
Capture antibody - Mouse anti-IFN alpha 2b (4000 ng/ml).
Antigens - PEG-IFN alpha 2b (0-1000 ng/ml).
Detection - ab53449 (500 ng) anti-Polyethylene glycol antibody [PEG-B-47b] (Biotin) followed by peroxidase-conjugated streptravidin (1/1000).
Blocking and dilution buffer: 5% NFDM/TBST.
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human cerebral cortex tissue showing negative staining with purified ab53449 at 1/250. Heat mediated antigen retrieval was performed using Tris/EDTA buffer pH 9. ab97051, a HRP-conjugated goat anti-rabbit IgG (H+L) was used as the secondary antibody (1/500). Negative control using PBS instead of primary antibody. Counterstained with hematoxylin.
Direct ELISA assay using 63 ng/mL of antigen (GCSF-PEG) to coat the plate. HRP-avidin (1/3000) was used for the detection of varying amounts of anti-PEG-47-Biotin (unpurified ab53449).