• Product name
    Anti-NAK/TBK1 antibody [EP611Y]
    See all NAK/TBK1 primary antibodies
  • Description
    Rabbit monoclonal [EP611Y] to NAK/TBK1
  • Host species
  • Tested applications
    Suitable for: ICC/IF, WB, IHC-Pmore details
  • Species reactivity
    Reacts with: Mouse, Rat, Human
  • Immunogen

    Synthetic peptide within Human NAK/TBK1 aa 1-100 (N terminal). The exact sequence is proprietary.

  • Positive control
    • WB: HeLa membrane extract lysate (ab29547), HepG2, SH-SY5Y, C6, HAP1 and NIH/3T3 cell lysate IHC-P: Human hepatocellular carcinoma ICC/IF: MCF7 cells
  • General notes

    The mouse and rat recommendation. This antibody may not be suitable for IHC with mouse or rat samples.

    Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMab® patents

    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.

    This product is a recombinant rabbit monoclonal antibody.



Our Abpromise guarantee covers the use of ab40676 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
ICC/IF 1/100.

For unpurified use at 1/250 - 1/500.

WB 1/5000. Detects a band of approximately 84 kDa (predicted molecular weight: 84 kDa).

For unpurified use at 1/1000.

IHC-P 1/100.

See IHC antigen retrieval protocols.

For unpurified use at 1/50. 


  • Function
    Serine/threonine protein involved in the signaling cascade converging to the activation of the transcription factor NF-kappa-B. May function as an IKK kinase, playing an essential role in the transcription of a subset of TNF-alpha-induced genes. Also mediates production of RANTES/CCL5 and interferon-beta/IFNB1. Has a pivotal role in the innate immune response. Phosphorylates Borna disease virus (BDV) P protein. Phosphorylates and activates IRF3 and IRF7 and allows their nuclear localization. This leads to production of alpha/beta interferons and the development of a cellular antiviral state. It also seems to be a central factor in the induction of the antiviral interferon response. Inhibition of its interaction with IRF3, due to HCV NS3 binding or BDV P protein seems to be one mechanism of inhibition of the innate immune responses of hepatitis C virus (HCV) infection or Borna disease virus infection respectively.
  • Tissue specificity
    Ubiquitous with higher expression in testis.
  • Sequence similarities
    Belongs to the protein kinase superfamily. Ser/Thr protein kinase family. I-kappa-B kinase subfamily.
    Contains 1 protein kinase domain.
  • Cellular localization
  • Information by UniProt
  • Database links
  • Alternative names
    • EC antibody
    • FLJ11330 antibody
    • FTDALS4 antibody
    • NAK antibody
    • NF kappa B activating kinase antibody
    • NF kB activating kinase antibody
    • NF-kappa-B-activating kinase antibody
    • Serine/threonine protein kinase TBK 1 antibody
    • Serine/threonine protein kinase TBK1 antibody
    • Serine/threonine-protein kinase TBK1 antibody
    • T2K antibody
    • TANK binding kinase 1 antibody
    • TANK-binding kinase 1 antibody
    • TBK 1 antibody
    • Tbk1 antibody
    • TBK1_HUMAN antibody
    see all


  • Lane 1: Wild-type HAP1 cell lysate (20 µg)
    Lane 2: NAK knockout HAP1 cell lysate (20 µg)
    Lane 3: HeLa cell lysate (20 µg)
    Lane 4: HepG2 cell lysate (20 µg)
    Lanes 1 - 4: Merged signal (red and green). Green - ab40676 observed at 90 kDa. Red - loading control, ab8245, observed at 37 kDa.
    ab40676 was shown to specifically react with NAK when NAK knockout samples were used. Wild-type and NAK knockout samples were subjected to SDS-PAGE. ab40676 and ab8245 (loading control to GAPDH) were diluted at 1/1000 and 1/10,000  respectively and incubated overnight at 4°C. Blots were developed with goat anti-rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed (ab216776) secondary antibodies at 1/10,000 dilution for 1 h at room temperature before imaging.

  • All lanes : Anti-NAK/TBK1 antibody [EP611Y] (ab40676) at 1/5000 dilution (purified)

    Lane 1 : HepG2 (Human liver hepatocellular carcinoma cell line) whole cell lysate
    Lane 2 : SH-SY5Y (Human neuroblastoma cell line from bone marrow) whole cell lysate
    Lane 3 : C6 (Rat glial tumor cell line) whole cell lysate
    Lane 4 : NIH/3T3 (Mouse embryonic fibroblast cell line) whole cell lysate

    Lysates/proteins at 20 µg per lane.

    All lanes : Goat Anti-Rabbit IgG H&L (HRP) (ab97051) at 1/20000 dilution

    Predicted band size: 84 kDa
    Observed band size: 84 kDa

    Blocking/Diluting buffer 5% NFDM/TBST
  • Immunohistochemical analysis of paraffin-embedded human hepatocellular carcinoma tissue sections labeling NAK/TBK1 with purified ab40676 at a dilution of 1/100 (11.5 μg/ml). ab97051 Goat Anti-Rabbit IgG H&L (HRP) at 1/500 was used as the secondary anitbody. Sections were counterstained with hematoxylin. Antigen retrieval was heat mediated using EDTA Buffer, pH 9.0. PBS was used instead of the primary antibody as the negative control and is shown in the inset. 

  • Immunocytochemistry/Immunofluorescence analysis of MCF7 (Human breast adenocarcinoma) cells labeling NAK/TBK1 with purified ab40676 at 1/100. Cells were fixed with 4% paraformaldehyde and permeabilized with 0.1% Triton X-100. ab150077, Alexa Fluo®488-conjugated goat anti-rabbit IgG (1/1000) was used as the secondary antibody. Cells were counter-stained with ab195889 Anti-Alpha Tubulin antibody [DM1A] - Microtubule Marker (Alexa Fluor®594) at 1/200. DAPI (blue) was used as a nuclear counterstain. Secondary Only Control: PBS was used instead of the primary antibody as the negative control.


This product has been referenced in:
  • Choi HJ  et al. Human cytomegalovirus-encoded US9 targets MAVS and STING signaling to evade type I interferon immune responses. Nat Commun 9:125 (2018). Read more (PubMed: 29317664) »
  • Yang L  et al. InsP3R-SEC5 interaction on phagosomes modulates innate immunity to Candida albicans by promoting cytosolic Ca2+ elevation and TBK1 activity. BMC Biol 16:46 (2018). Read more (PubMed: 29703257) »
See all 32 Publications for this product

Customer reviews and Q&As

Abcam guarantees this product to work in the species/application used in this Abreview.
Western blot
Mouse Cell lysate - whole cell (MEFs)
Gel Running Conditions
Reduced Denaturing (4-12%)
Loading amount
20 µg
IFN gamma
Blocking step
Milk as blocking agent for 1 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 26°C

Dr. Prashant Rai

Verified customer

Submitted Jul 17 2018


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