• Product nameAnti-Calpain 1 antibody
    See all Calpain 1 primary antibodies
  • Description
    Rabbit polyclonal to Calpain 1
  • Specificityab28257 recognizes the amino terminal end of the large subunit of Calpain 1. The antibody does not recognize amino-processed Calpain 1, and can be used to discriminate between latent and amino-processed forms. Also, it does not cross react with the other calpain family members (M Calpain, Calpain 94, ncl2, ncl3, etc.).
  • Tested applicationsSuitable for: WB, ICC/IFmore details
  • Species reactivity
    Reacts with: Mouse, Rat, Human
  • Immunogen

    Synthetic peptide corresponding to Human Calpain 1 aa 1-30.

  • Positive control
    • Human condrosarcoma cell lysate.



Our Abpromise guarantee covers the use of ab28257 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
WB 1/1000 - 1/5000. Detects a band of approximately 82 kDa (predicted molecular weight: 82 kDa). 1/1000, when using colorimetric substrates such as BCIP/NBT - 1/5000, when using chemiluminescent substrates. But note that when used against the reduced protein, ab28257 identifies bands at 80 kDa, 68 kDa, and a series of further cleaved forms. Dilution optimised using Chromogenic detection.
ICC/IF Use a concentration of 1 - 5 µg/ml.


  • FunctionCalcium-regulated non-lysosomal thiol-protease which catalyze limited proteolysis of substrates involved in cytoskeletal remodeling and signal transduction.
  • Tissue specificityUbiquitous.
  • Sequence similaritiesBelongs to the peptidase C2 family.
    Contains 1 calpain catalytic domain.
    Contains 4 EF-hand domains.
  • Cellular localizationCytoplasm. Cell membrane. Translocates to the plasma membrane upon Ca(2+) binding.
  • Information by UniProt
  • Database links
  • Alternative names
    • Ca2 activated neutral protease antibody
    • Calcium activated neutral proteinase antibody
    • Calcium activated neutral proteinase small subunit antibody
    • Calcium dependent protease small subunit 1 antibody
    • Calcium dependent protease small subunit antibody
    • Calcium-activated neutral proteinase 1 antibody
    • Calpain 1 antibody
    • Calpain 1 large subunit antibody
    • Calpain 1, (mu/I) large subunit antibody
    • Calpain mu type antibody
    • Calpain mu-type antibody
    • Calpain regulatory subunit antibody
    • Calpain small subunit 1 antibody
    • Calpain, large polypeptide L1 antibody
    • Calpain-1 catalytic subunit antibody
    • Calpain-1 large subunit antibody
    • CAN1_HUMAN antibody
    • CANP 1 antibody
    • CANP antibody
    • CANP small subunit antibody
    • CANP1 antibody
    • CANPL 1 antibody
    • CANPL1 antibody
    • CAPN 1 antibody
    • CAPN1 antibody
    • Cell proliferation inducing protein 30 antibody
    • Cell proliferation-inducing gene 30 protein antibody
    • Micromolar Calpain antibody
    • Micromolar-calpain antibody
    • Mu Calpain antibody
    • muCANP antibody
    • muCL antibody
    see all

Anti-Calpain 1 antibody images

  • ICC/IF image of ab28257 stained MCF7 cells. The cells were 100% methanol fixed (5 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab28257, 1µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.

  • All lanes : Anti-Calpain 1 antibody (ab28257) at 1 µg/ml

    Lane 1 : Human liver tissue lysate - total protein (ab29889)
    Lane 2 : HeLa (Human epithelial carcinoma cell line) Whole Cell Lysate
    Lane 3 : U2OS (Human osteosarcoma cell line) Whole Cell Lysate

    Lysates/proteins at 10 µg per lane.

    Goat Anti-Rabbit IgG H&L (HRP) preadsorbed (ab97080) at 1/5000 dilution
    developed using the ECL technique

    Performed under reducing conditions.

    Predicted band size : 82 kDa
    Observed band size : 82 kDa
    Additional bands at : 27 kDa,42 kDa,65 kDa. We are unsure as to the identity of these extra bands.

    Exposure time : 30 seconds

References for Anti-Calpain 1 antibody (ab28257)

This product has been referenced in:
  • McCarthy DA  et al. Redox control of the senescence regulator interleukin-1a and the secretory phenotype. J Biol Chem 288:32149-59 (2013). WB ; Human . Read more (PubMed: 24062309) »
  • Arnandis T  et al. Calpains mediate epithelial-cell death during mammary gland involution: mitochondria and lysosomal destabilization. Cell Death Differ : (2012). Read more (PubMed: 22555453) »

See all 5 Publications for this product

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