Human IgG4 | AbD00264_hIgG4
Recombinant human IgG4 lambda was analyzed under non-reducing, denaturing conditions (Lane 2) and reducing, denaturing conditions (Lane 3). Bands are visualized using Coomassie staining and the heavy (HC) and light chains (LC) are indicated, respectively. The molecular weights (kDa) of the marker proteins (Lane 1) are indicated on the left hand side of the image
UV280 chromatogram of a size exclusion chromatography run of recombinant Human IgG4 lambda. The larger peak corresponds to monomeric, fully assembled AbD00264_hIgG4. The smaller shoulder most likely contains dimers and aggregates
Recombinant Human IgG4 lambda, clone AbD00264_hIgG4 is a recombinant human IgG4 antibody with a lambda light chain.
Clone AbD00264_hIgG4 is specific for green fluorescent protein (GFP) and has no known reactivity with mammalian proteins or other antigens. This product is recommended for use as a standard in assays designed to measure IgG4 levels, or as a control antibody when using other human antibodies of the same isotype and subclass.
In addition to the tetrameric IgG structure, composed of two copies each of the heavy and light chains, human IgG4 forms so-called half-molecules. This species contains only one heavy and one light chain. Half-molecules can assemble with an unrelated half-molecule to form bispecific tetrameric antibody species (Aalberse et al. 2002). Half-molecules of human IgG4 preparations can be detected as an additional species under denaturing, non-reducing conditions using SDS-PAGE, size exclusion chromatography or capillary electrophoresis.
Mutation in the core hinge region of IgG4 prevents the formation of half-molecules (Bloom et al. 1997). In addition to the wild type recombinant, Bio-Rad also offers recombinant Human IgG4 lambda in its mutated form (HCA246). Recombinant Human IgG4 kappa is also available in both wild type (HCA195) and mutant form (HCA247).
Clone AbD00264_hIgG4 is specific for green fluorescent protein (GFP) and has no known reactivity with mammalian proteins or other antigens. This product is recommended for use as a standard in assays designed to measure IgG4 levels, or as a control antibody when using other human antibodies of the same isotype and subclass.
In addition to the tetrameric IgG structure, composed of two copies each of the heavy and light chains, human IgG4 forms so-called half-molecules. This species contains only one heavy and one light chain. Half-molecules can assemble with an unrelated half-molecule to form bispecific tetrameric antibody species (Aalberse et al. 2002). Half-molecules of human IgG4 preparations can be detected as an additional species under denaturing, non-reducing conditions using SDS-PAGE, size exclusion chromatography or capillary electrophoresis.
Mutation in the core hinge region of IgG4 prevents the formation of half-molecules (Bloom et al. 1997). In addition to the wild type recombinant, Bio-Rad also offers recombinant Human IgG4 lambda in its mutated form (HCA246). Recombinant Human IgG4 kappa is also available in both wild type (HCA195) and mutant form (HCA247).
Product Details
- Product Form
- Human IgG4 antibody selected from the HuCAL GOLD phage display library and expressed in a human cell line, HKB-11 - liquid.
- Preparation
- Purified IgG prepared by affinity chromatography on Protein G
- Buffer Solution
- Phosphate buffered saline
- Preservative Stabilisers
- 0.01% Thiomersal
- Immunogen
- Green fluorescent protein
- Approx. Protein Concentrations
- Antibody concentration 0.5 mg/ml
Storage Information
- Storage
- 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. - Guarantee
- 12 months from date of despatch
More Information
- UniProt
- P01861
- Entrez Gene
- IGHG4
- GO Terms
- GO:0003823 antigen binding
- GO:0005576 extracellular region
- GO:0005624 membrane fraction
- GO:0006955 immune response
- Acknowledgements
- 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 bio-rad.com/en-us/trademarks for details.
- Licensed Use
- For in vitro research purposes only, unless otherwise specified in writing by Bio-Rad.
- Regulatory
- For research purposes only
Applications of Human IgG4
| Application Name | Verified | Min Dilution | Max Dilution |
|---|---|---|---|
| ELISA |
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
Copyright © 2021 Bio-Rad Antibodies (formerly AbD Serotec)
Secondary Antibodies Available
| Description | Product Code | Applications | Pack Size | List Price | Quantity |
|---|---|---|---|---|---|
| Goat anti Human IgG F(ab')2:HRP | 0500-0099 | E WB | 0.5 ml |
|
|
| Mouse anti Human IgG (Fc) CH2 Domain:HRP | MCA647P | C* E | 0.2 mg |
|
Product Specific References
Further Reading
-
Aalberse, R.C. & Schuurman, J. (2002) IgG4 breaking the rules.
Immunology. 105 (1): 9-19. -
Bloom, J.W. et. al. (1997) Intrachain disulfide bond in the core hinge region of human IgG4.
Protein Sci. 6:407-415
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