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IgG1 antibody | AbD27686

Human anti Human IgG1 (Fc)

Product Type
Monoclonal Antibody
HuCAL Fab monovalent

Product Code Applications Pack Size List Price Your Price Qty
Datasheet Datasheet Datasheet
SDS Safety Datasheet SDS
E 0.1 mg loader
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Human Anti-Human IgG1 Fc Antibody clone AbD27686 is a recombinant monovalent Fab antibody, that recognizes human IgG1 Fc, with an affinity of 76 nM. It has been shown to have a greatly reduced affinity (89-fold) for IgG from cynomolgus macaque compared to human IgG1. It also has strongly reduced binding to rhesus macaque IgG. It does not recognize other human immunoglobulin isotypes (IgG2, IgG3, IgG4, IgA, IgE, IgM) or mouse IgG2a.

This antibody has been generated by Bio-Rad using the HuCAL® antibody library and CysDisplay® technology. It is sold for research use, with implicit permission for use for the detection of therapeutic antibodies from samples obtained from experimental animals. When tested by Bio-Rad in an antigen capture pharmacokinetic assay format, this antibody performs similarly to Mouse Anti-Human IgG (CH2 Domain) Antibody clone R10Z8E9 (MCA5748G) in 10% cynomolgus macaque serum. It recognizes a different epitope on human IgG1 Fc than clone R10Z8E9.

View a summary of anti-human IgG Fc specific antibodies for the detection of therapeutic antibodies.

Target Species
Product Form
A monovalent human recombinant Fab (lambda light chain) selected from the HuCAL PLATINUM phage display library. Expressed in E. coli and purified using purified using NiNTA affinity chromatography. The antibody is tagged with a DYKDDDDK tag and a HIS-tag (HHHHHH) at the C-terminus of the antibody heavy chain. This antibody is supplied as a liquid.
Buffer Solution
Phosphate buffered saline
Preservative Stabilisers
0.09% Sodium Azide (NaN3)
Recombinant human IgG1 kappa
The intrinsic affinity of the monovalent form of this antibody is KD=76 nM as measured by real time, label free molecular interaction analysis on immobilized hIgG1 kappa.
Approx. Protein Concentrations
Antibody concentration 0.5 mg/ml
For research purposes only
12 months from date of despatch
This product and/or its use is covered by claims of U.S. patents, and/or pending U.S. and non-U.S. patent applications owned by or under license to Bio-Rad Laboratories, Inc. See for details.
His-tag is a trademark of EMD Biosciences.
Licensed Use
For in vitro research purposes only, unless otherwise specified in writing by Bio-Rad.

This product is shipped at ambient temperature. It is recommended to aliquot and store at -20°C on receipt. When thawed, aliquot the sample as needed. Keep aliquots at 2-8°C for short term use (up to 4 weeks) and store the remaining aliquots at -20°C.

Avoid repeated freezing and thawing as this may denature the antibody. Storage in frost-free freezers is not recommended.

This product has been reported to work in the following applications. This information is derived from testing within our laboratories, peer-reviewed publications or personal communications from the originators. Please refer to references indicated for further information. For general protocol recommendations, please visit the antibody protocols page.
Application Name Verified Min Dilution Max Dilution
Where this product has not been tested for use in a particular technique this does not necessarily exclude its use in such procedures. Suggested working dilutions are given as a guide only. It is recommended that the user titrates the product for use in their own system using appropriate negative/positive controls.
Technical Advice
Recommended protocols and further information about HuCAL recombinant antibody technology can be found in the HuCAL Antibodies Technical Manual.

Description Product Code Applications Pack Size List Price Your Price Quantity
Hispec Assay Diluent BUF049A E IY 50 ml
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Description Hispec Assay Diluent
Mouse anti Penta Histidine Tag:HRP MCA5995P E WB 125 µl loader
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Description Mouse anti Penta Histidine Tag:HRP

References for IgG1 antibody

  1. Thisted, T. et al. (2024) VISTA checkpoint inhibition by pH-selective antibody SNS-101 with optimized safety and pharmacokinetic profiles enhances PD-1 response.
    Nat Commun. 15 (1): 2917.


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Please Note: All Products are "FOR RESEARCH PURPOSES ONLY"

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