Anti-DDDDK tag (Binds to FLAG® tag sequence) antibody [EPR20018-251] - BSA and Azide free
- RabMAb
- Recombinant
- What is this?
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(11 Publications)
Anti-DDDDK tag (Binds to FLAG® tag sequence) antibody [EPR20018-251] - BSA and Azide free (ab236777) is a rabbit recombinant monoclonal antibody provided in a PBS only buffer for easy conjugation. Suitable for Western Blot, IP, IHC-P, ICC/IF.
- BSA, sodium azide, and glycerol-free for easy conjugation
- Biophysical QC for unrivalled batch-batch consistency
View Alternative Names
DDDDK epitope tag, DDDK, DYKDDDDK, DYKDDDDK (also known as the FLAG搴 tag sequence), DYKDDDDK epitope tag, DYKDDDDK tag, ECS epitope tag, ECS tag, Enterokinase Cleavage Site epitope tag, Enterokinase Cleavage Site tag, FLAG搴, FLAG搴 tag, ddk
- IHC-P
Supplier Data
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-DDDDK tag (Binds to FLAG® tag sequence) antibody [EPR20018-251] - BSA and Azide free (AB236777)
Negative control : No staining on human hepatocellular cancer.
Immunohistochemical analysis of paraffin-embedded human hepatocellular cancer tissue stained for DDDDK tag using ab205606 at 1/750 dilution, followed by a ready to use Goat Anti-Rabbit IgG H&L (HRP). Counterstained with hematoxylin.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab205606).
Heat mediated antigen retrieval was performed with EDTA buffer pH 9 before commencing with IHC staining protocol.
- ICC/IF
Supplier Data
Immunocytochemistry/ Immunofluorescence - Anti-DDDDK tag (Binds to FLAG® tag sequence) antibody [EPR20018-251] - BSA and Azide free (AB236777)
Immunofluorescent analysis of 4% paraformaldehyde-fixed, 0.1% Triton X-100 permeabilized HEK-293T (Human epithelial cell line from embryonic kidney transformed with large T antigen) cells labeling DDDDK tag with ab205606 at 1/100 dilution, followed by ab150077 Alexa Fluor® 488 Goat anti-Rabbit secondary at 1/1000 dilution (green).
Confocal image showing positive staining for FLAG® on HEK-293T cells transfected with DDDDK-tagged PFKFB3 expression vector. Mouse monoclonal anti-FLAG® M2 antibody was used as a counterstain at 1/500 dilution, and Alexa Fluor® 647 Goat anti-mouse secondary (ab150115) was used as the secondary antibody only control at 1/500 dilution. The nucleus is counterstained with DAPI.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab205606).
- IHC-P
Supplier Data
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-DDDDK tag (Binds to FLAG® tag sequence) antibody [EPR20018-251] - BSA and Azide free (AB236777)
Immunhistochemical analysis of agarose-embedded HEK-293T (Human epithelial cell line from embryonic kidney transformed with large T antigen) transfected with DDDDK-tagged human PD-L1 expression vector labeling DDDDK tag with ab205606 at 1/750 dilution, followed by a ready to use Goat Anti-Rabbit IgG H&L (HRP). Counterstained with hematoxylin.
Positive staining on HEK-293T cells transfected with DDDDK-tagged human PD-L1 expression vector (Panel A) is observed. No signal was detected on HEK-293T transfected with an empty vector (vector control), containing a C-terminal DDDDK tag (Panel B).
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab205606).
Heat mediated antigen retrieval was performed with EDTA buffer pH 9 before commencing with IHC staining protocol.
- IP
Supplier Data
Immunoprecipitation - Anti-DDDDK tag (Binds to FLAG® tag sequence) antibody [EPR20018-251] - BSA and Azide free (AB236777)
DDDDK tag was immunoprecipitated from 0.35 mg HEK-293T (Human epithelial cell line from embryonic kidney transformed with large T antigen) transfected with DDDDK-tagged human PFKFB3 expression vector whole cell lysate with ab205606 at 1/30 dilution. Western blot was performed from the immunoprecipitate using ab205606 at 1/1000 dilution. VeriBlot for IP Detection Reagent (HRP) (ab131366), was used for detection at 1/10000 dilution.
Lane 1 : HEK-293T transfected with DDDDK-tagged human PFKFB3 expression vector whole cell lysate (input).
Lane 2 : ab205606 IP in HEK-293T transfected with DDDDK-tagged human PFKFB3 expression vector whole cell lysate.
Lane 3 : Rabbit monoclonal IgG (ab172730) instead of ab205606 in HEK-293T transfected with DDDDK-tagged human PFKFB3 expression vector whole cell lysate.
Blocking/Dilution buffer : 5% NFDM/TBST
Exposure time : 3 seconds.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab205606).
All lanes:
Immunoprecipitation - Anti-DDDDK tag (Binds to FLAG® tag sequence) antibody [EPR20018-251] (<a href='/en-us/products/primary-antibodies/ddddk-tag-binds-to-flag-tag-sequence-antibody-epr20018-251-ab205606'>ab205606</a>)
false
- IHC-P
Supplier Data
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-DDDDK tag (Binds to FLAG® tag sequence) antibody [EPR20018-251] - BSA and Azide free (AB236777)
Negative control : No staining on mouse spleen.
Immunohistochemical analysis of paraffin-embedded mouse spleen tissue stained for DDDDK tag using ab205606 at 1/750 dilution, followed by a ready to use Goat Anti-Rabbit IgG H&L (HRP). Counterstained with hematoxylin.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab205606).
Heat mediated antigen retrieval was performed with EDTA buffer pH 9 before commencing with IHC staining protocol.
- IHC-P
Supplier Data
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-DDDDK tag (Binds to FLAG® tag sequence) antibody [EPR20018-251] - BSA and Azide free (AB236777)
Negative control : No staining on rat spleen.
Immunohistochemical analysis of paraffin-embedded rat spleen tissue stained for DDDDK tag using ab205606 at 1/750 dilution, followed by a ready to use Goat Anti-Rabbit IgG H&L (HRP). Counterstained with hematoxylin.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab205606).
Heat mediated antigen retrieval was performed with EDTA buffer pH 9 before commencing with IHC staining protocol.
Related conjugates and formulations (4)
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Anti-DDDDK tag (Binds to FLAG® tag sequence) antibody [EPR20018-251]
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519 Alexa Fluor® 488
Alexa Fluor® 488 Anti-DDDDK tag (Binds to FLAG® tag sequence) antibody [EPR20018-251]
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665 Alexa Fluor® 647
Alexa Fluor® 647 Anti-DDDDK tag (Binds to FLAG® tag sequence) antibody [EPR20018-251]
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HRP Anti-DDDDK tag (Binds to FLAG® tag sequence) antibody [EPR20018-251]
Reactivity data
Product details
What is this antibody validated in?
Anti-DDDDK tag (Binds to FLAG® tag sequence) antibody [EPR20018-251] - BSA and Azide free (ab236777) is a rabbit recombinant monoclonal antibody and is validated for use in Western Blot (WB), Immunoprecipitation (IP), Immunohistochemistry (IHC-P), Immunocytochemistry/immunofluorescence (ICC/IF). Tagged protein detection
DDDDK tag (Binds to FLAG® tag sequence) antibodies are used to visualize proteins labelled with this tag in a variety of applications.
Other related products
We have a range of other formats of antibody clone [EPR20018-251] also available for your convenience: ab205606, Carrier free - ab236777, Alexa Fluor® 488 - ab245892, Alexa Fluor® 647 - ab245893, HRP - ab245895
Patented technology
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.
What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:
- - High batch-to-batch consistency and reproducibility
- - Improved sensitivity and specificity
- - Long-term security of supply
- - Animal-free batch production
For more information, read more on recombinant antibodies.
Conjugation ready
Our carrier-free antibodies are typically supplied in a PBS-only formulation, purified and free of BSA, sodium azide and glycerol. This conjugation-ready format is designed for use with fluorochromes, metal isotopes, oligonucleotides, and enzymes, which makes them ideal for antibody labelling, functional and cell-based assays, flow-based assays (e.g. mass cytometry) and Multiplex Imaging applications.
Use our conjugation kits for antibody conjugates that are ready-to-use in as little as 20 minutes with 1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.
Compatibility
This product is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm, without the need for antibody preparation. Maxpar® is a trademark of Fluidigm Canada Inc.
FLAG® is a registered trade mark of Sigma Aldrich Biotechnology LP. It is used here for informational purposes only.
Properties and storage information
Form
Purification technique
Storage buffer
Shipped at conditions
Appropriate short-term storage conditions
Appropriate long-term storage conditions
Storage information
Product protocols
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Publications (11)
Recent publications for all applications. Explore the full list and refine your search
Journal for immunotherapy of cancer 13: PubMed40404207
2025
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Advanced science (Weinheim, Baden-Wurttemberg, Germany) 12:e2406220 PubMed39757767
2025
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Cancer biology & therapy 25:2421578 PubMed39460738
2024
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International journal of surgery (London, England) 110:7701-7719 PubMed39434688
2024
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Environmental toxicology 39:4207-4220 PubMed38727079
2024
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Journal of experimental & clinical cancer research : CR 43:7 PubMed38163859
2024
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Virus evolution 8:veab106 PubMed35223082
2022
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Cell death & disease 12:708 PubMed34267179
2021
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International journal of molecular medicine 47: PubMed33649815
2021
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Molecular microbiology 116:154-167 PubMed33567150
2021
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Product promise
Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.
For licensing inquiries, please contact partnerships@abcam.com