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Purified Mouse Anti-Espin
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Product Details
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BD Transduction Laboratories™
Rat (QC Testing), Human, Mouse, Chicken (Tested in Development)
Mouse IgG2a
Rat espin aa. 458-580
Western blot (Routinely Tested), Immunofluorescence (Not Recommended)
110 kDa
250 µg/ml
Aqueous buffered solution containing BSA, glycerol, and ≤0.09% sodium azide.

Preparation And Storage

The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. Store undiluted at -20°C.

Recommended Assay Procedures

Western blot: Please refer to .

Product Notices

  1. Since applications vary, each investigator should titrate the reagent to obtain optimal results.
  2. Please refer to for technical protocols.
  3. Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
  4. Source of all serum proteins is from USDA inspected abattoirs located in the United States.
611656 Rev. 1
Antibody Details
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Actin-binding proteins regulate the polymerization and depolymerization of actin, connect actin-based structures to membranes and to other cytoskeletal elements, power the movement of actin filaments, and cross-link actin filaments into bundles. Espins are actin binding and bundling proteins. The two isoforms of espin are the 30 kDa small espin found in brush border cells and the 110 kDa espin found in testis. Espin contains eight ankyrin repeats in the N-terminal region, two proline-rich peptides, an ATP/GTP binding P-loop domain, and a C-terminal actin bundling domain. Small espin is composed of the C-terminal actin bundling domain and a unique region at the N-terminus. Espin binds to actin with a higher affinity than small espin and is more efficient at actin bundling. During spermiogenesis, espin accumulates, along with forming parallel actin bundles, at the ectoplasmic specialization. These actin bundles anchor and position the spermatid within the seminiferous epithelium. Other actin binding proteins, such as α-actinin, vinculin, and fimbrin, have also been implicated in the formation of ectoplasmic specialization, however espin appears to function specifically in the testes.

611656 Rev. 1
Format Details
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Tissue culture supernatant is purified by either protein A/G or affinity purification methods. Both methods yield antibody in solution that is free of most other soluble proteins, lipids, etc. This format provides pure antibody that is suitable for a number of downstream applications including: secondary labeling for flow cytometry or microscopy, ELISA, Western blot, etc.
611656 Rev.1
Citations & References
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Development References (3)

  1. Bartles JR, Wierda A, Zheng L. Identification and characterization of espin, an actin-binding protein localized to the F-actin-rich junctional plaques of Sertoli cell ectoplasmic specializations. J Cell Biol. 1996; 109( pt 6):1229-1239. (Biology). View Reference
  2. Bartles JR, Zheng L, Li A, Wierda A, Chen B. Small espin: a third actin-bundling protein and potential forked protein ortholog in brush border microvilli. J Cell Biol. 1998; 143(1):107-119. (Biology). View Reference
  3. Chen B, Li A, Wang D, Wang M, Zheng L, Bartles JR. Mol Biol Cell. 1999; 10(12):4327-4339. (Biology). View Reference
611656 Rev. 1

Please refer to Support Documents for Quality Certificates

Global - Refer to manufacturer's instructions for use and related User Manuals and Technical data sheets before using this products as described

Comparisons, where applicable, are made against older BD Technology, manual methods or are general performance claims.  Comparisons are not made against non-BD technologies, unless otherwise noted.

For Research Use Only. Not for use in diagnostic or therapeutic procedures.