Anti-alpha/beta tubulin: sheep polyclonal

Anti-alpha/beta tubulin: sheep polyclonal

Product Uses
This antibody is recommended for detection of tubulin in all yeast, fungi, and animal species (Fig. 2).
The following protocols have been tested with this antibody:

Western BlotImmunofluorescence



The anti-tubulin antibody (Cat. # ATN02) is an affinity purified sheep polyclonal antibody that reacts to alpha and beta tubulin. The immunogen used for antibody production was a mixture of purified tubulins and therefore the antibody has broad species cross reactivity from yeast to humans. Porcine extract (Cat. # EXT03) is included as a positive control and ATN02 identifies a characteristic tubulin band at 55 kD on Western blots (see Fig. 1).  ATN02 is supplied as a lyophilized white powder.


Example Results

Western Blot of AAN01

Figure 1. Western blot analysis of anti-tubulin antibody.  Protein samples were separated by electrophoresis and transferred to PVDF membrane as described in the methods.  ATN02 antibody was diluted to 50 0 ng/ml (1:1000) for Western blot analysis.  Tubulin was detected in 10 µg of bovine brain extract (see arrow at 55 kD).  Molecular weight markers are from Invitrogen. 

Western Blot of ATN02

Figure 2. Western blot of cell extracts probed with anti-tubulin polyclonal antibody (Cat. # ATN02). Chemiluminescence detection of tubulin in extracts of Drosophila S2 cells (50 µg, lane 1) Xenopus A6 cells (50 µg, lane 2), mouse Swiss 3T3 cells (50 µg, lane 3), rat NRK cells (50 µg, lane 4), human HeLa cells (50 µg, lane 5), and bovine brain (50 µg, lane 6) at 55 kD (see arrow).  The blot was probed with a 500 ng/ml (1:1000) dilution of ATN02.

IF of AAN01

Figure 3. Immunofluorescence image of mouse Swiss 3T3 cells stained with Anti-Tubulin  polyclonal antibody (Cat. # ATN02). Swiss 3T3 cells were grown to semi-confluency and fixed with methanol. Immunofluorescence staining using 2.5 µg/ml (1:200 dilution) ATN02 antibody is shown (red). The primary antibody was detected with a 1:500 dilution of anti-sheep rhodamine conjugated antibody. DNA (blue) was stained with 100 nM DAPI in PBS. Photograph was taken with a 100X objective lens.

Immunofluorescence image using ATN02

Figure 4. Immunofluorescence image of Arabidopsis thaliana metaphase cell stained with Anti-Tubulin polyclonal antibody (Cat. # ATN02).
Microtubules are pseudocolored in green and chrmosomes in red.  

Image courtesy of Dr. Bo Liu, Department of Plant Biology, University of California, Davis.

For product Datasheets and MSDSs please click on the PDF links below.   For additional information, click on the FAQs tab above or contact our Technical Support department at

Ibarrola-Vannucci, AK. Et al. Characterization and functional analysis of the proteins Prohibitin 1 and 2 in Trypanosoma cruzi (2021)

Dixon, C. et al. STING nuclear partners contribute to innate immune signaling responses (2021)

Yang, Y., Li, N., Qiu, J., Ge, H. & Qin, X. Identification of the Repressive Domain of the Negative Circadian Clock Component CHRONO. Int. J. Mol. Sci. 21, 2469 (2020).

Samson, A. L. et al. MLKL trafficking and accumulation at the plasma membrane control the kinetics and threshold for necroptosis. Nat. Commun. 11, 1–17 (2020).

Gaire, S. K. et al. Accelerating multicolor spectroscopic single-molecule localization microscopy using deep learning. Biomed. Opt. Express 11, 2705–2721 (2020).

Batlle, Cristina et al. “hnRNPDL Phase Separation Is Regulated by Alternative Splicing and Disease-Causing Mutations Accelerate Its Aggregation.” Cell reports vol. 30,4 (2020): 1117-1128.e5. doi:10.1016/j.celrep.2019.12.080

Lemjabbar-Alaoui, H., Peto, C. J., Yang, Y.-W. & Jablons, D. M. AMXI-5001, a novel dual parp1/2 and microtubule polymerization inhibitor for the treatment of human cancers. Am. J. Cancer Res. 10, 2649–2676 (2020).

Ki-Hee Song et al. "Three-dimensional biplane spectroscopic single-molecule localization microscopy," Optica 6, 709-715 (2019)

Tejedo, Milvia Iris Alata et al. “3,3'-thiodipropanol as a versatile refractive index-matching mounting medium for fluorescence microscopy.” Biomedical optics express vol. 10,3 1136-1150. 11 Feb. 2019, doi:10.1364/BOE.10.001136

Xu, Xiaoxue et al. “Probenecid Disrupts a Novel Pannexin 1-Collapsin Response Mediator Protein 2 Interaction and Increases Microtubule Stability.” Frontiers in cellular neuroscience vol. 12 124. 11 May. 2018, doi:10.3389/fncel.2018.00124

Methods Mol. Biol. 2015; 1208, 395-408.
"Intracellular distribution of glutathionylated proteins in cultured dermal fibroblasts by immunofluorescence."
Author(s): Petrini S. et al. 
(See PubMed article)

Reproduction. 2015; 149, 633-44.
"USP8/UBPy-regulated sorting and the development of sperm acrosome: the recruitment of MET."
Author(s): Berruti G. and Paiardi C.
(See PubMed article)

Anti-a/b tubulin antibody (Cat. # ATN02) was used in Western blotting to examine if succination altered the immunodetectability of tubulin modified by this PTM.
Biochem. J. 462, 231-45.
"Identification of protein succination as a novel modification of tubulin"
Piroli G.G. et al. 
(See PubMed article)

Anti-a/b tubulin antibody (Cat. # ATN02) was used to immunocytochemically label tubulin in mammary epithelial cells in the study of the cellular response to DNA damage.
J. Biol. Chem. 2012; 287, 22838–22853.
"Elevated cyclin G2 expression intersects with DNA damage checkpoint signaling and is required for a potent G2/M checkpoint arrest response to doxorubicin."
Author(s): M. Zimmermann et al.
(See PubMed article)

Plant Cell. 2011; 23, 2606–2618
"Augmin plays a critical role in organizing the spindle and phragmoplast microtubule arrays in Arabidopsis."
Author(s): C.-M.K. Ho et al.
(See PubMed article)

Plant Cell. 2011; 23, 2909-2923.
"Interaction of antiparallel microtubules in the phragmoplast is mediated by the microtubule-associated protein MAP65-3 in Arabidopsis."
Author(s): C.-M.K. Ho et al.
(See PubMed article)

Planta. 2010; 231, 277-291.
"Changes in the accumulation of a- and b-tubulin during bud development in Vitis Vinifera L."
Author(s): L. Parrotta et al.
(See PubMed article)

J. Comp. Neurol. 2009; 515, 295-312.
"Axon regeneration in the absence of growth cones: Acceleration by cyclic AMP."
Author(s): Jin L.Q. et al. 
(See PubMed article)

J. Biol. Chem. 2008; 283, 26188-26197.
"Heat shock transcription factor 1-activating compounds suppress polyglutamine-induced neurodegeneration through induction of multiple molecular chaperones."
Author(s): Fujikake N. et al.
(See PubMed article)




Question 1: What is the antigen that this antibody was raised against?

Answer 1:  The immunogen used for antibody production was a mixture of purified tubulins and therefore the polyclonal antibody has broad species cross reactivity from yeast to humans.


Question 2:  What species has this antibody been tested against?

Answer 2:  This polyclonal antibody is recommended for detection of tubulin in all yeast, fungi, and animal species including Drosophila melanogaster, Xenopus laevis, mouse, rat, human and bovine cell/tissue extracts. 



If you have any questions concerning this product, please contact our Technical Service department at