• Product name
  • Description
    Rabbit polyclonal to Caspase-9
  • Host species
  • Specificity
    ab25758 detects 45 kDa procaspase-9, 35/37 kDa cleaved large fragment and the 25 kDa fully cleaved caspase-9. The antibody does not detect any other caspases.
  • Tested applications
    Suitable for: WBmore details
  • Species reactivity
    Reacts with: Mouse, Rat, Human, Xenopus laevis
  • Immunogen

    Synthetic peptide corresponding to Mouse Caspase-9.
    (Peptide available as ab38268)



Our Abpromise guarantee covers the use of ab25758 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 Use a concentration of 1 µg/ml. Detects a band of approximately 45 kDa (predicted molecular weight: 46 kDa).Can be blocked with Mouse Caspase-9 peptide (ab38268).


  • Function
    Involved in the activation cascade of caspases responsible for apoptosis execution. Binding of caspase-9 to Apaf-1 leads to activation of the protease which then cleaves and activates caspase-3. Proteolytically cleaves poly(ADP-ribose) polymerase (PARP).
    Isoform 2 lacks activity is an dominant-negative inhibitor of caspase-9.
  • Tissue specificity
    Ubiquitous, with highest expression in the heart, moderate expression in liver, skeletal muscle, and pancreas. Low levels in all other tissues. Within the heart, specifically expressed in myocytes.
  • Sequence similarities
    Belongs to the peptidase C14A family.
    Contains 1 CARD domain.
  • Developmental stage
    Expressed at low levels in fetal heart, at moderate levels in neonate heart, and at high levels in adult heart.
  • Post-translational
    Cleavages at Asp-315 by granzyme B and at Asp-330 by caspase-3 generate the two active subunits. Caspase-8 and -10 can also be involved in these processing events.
  • Information by UniProt
  • Database links
  • Alternative names
    • APAF-3 antibody
    • APAF3 antibody
    • Apoptosis related cysteine peptidase antibody
    • Apoptotic protease Mch-6 antibody
    • Apoptotic protease-activating factor 3 antibody
    • CASP-9 antibody
    • CASP9 antibody
    • CASP9_HUMAN antibody
    • Caspase 9 apoptosis related cysteine peptidase antibody
    • Caspase 9 Dominant Negative antibody
    • Caspase 9c antibody
    • Caspase-9 antibody
    • Caspase-9 subunit p10 antibody
    • ICE LAP6 antibody
    • ICE like apoptotic protease 6 antibody
    • ICE-LAP6 antibody
    • ICE-like apoptotic protease 6 antibody
    • MCH6 antibody
    • PPP1R56 antibody
    • protein phosphatase 1, regulatory subunit 56 antibody
    • RNCASP9 antibody
    see all


  • Anti-Caspase-9 antibody (ab25758) + mouse intestine tissue lysate

    Predicted band size: 46 kDa

    The antibody detects 45 kDa procaspase 9, 35/37 kDa cleaved immediate fragment and the 17-25 kDa fully cleaved caspase 9.


This product has been referenced in:
  • Liu G  et al. Long non-coding RNA THRIL promotes LPS-induced inflammatory injury by down-regulating microRNA-125b in ATDC5 cells. Int Immunopharmacol 66:354-361 (2019). Read more (PubMed: 30521964) »
  • Huang N  et al. MicroRNA-17-5p aggravates lipopolysaccharide-induced injury in nasal epithelial cells by targeting Smad7. BMC Cell Biol 19:1 (2018). Read more (PubMed: 29433423) »
See all 19 Publications for this product

Customer reviews and Q&As

1-4 of 4 Abreviews or Q&A


Thank you for contacting us.

As this is an exceptional free of charge replacement, I will process the order. Could you please confirm that you would like a free of charge replacement with ab25758 and not ab133520 (rabbit monoclonal I recommended with a high specificity)?

Unfortunately there is no way of telling how this antibody will work in your experiment apart from trying it. However, please be reassured that this antibody is also covered by our abpromise guarantee.

I hope this information is helpful to you. Please do not hesitate to contact us if you need any more advice or information.

Read More
Abcam guarantees this product to work in the species/application used in this Abreview.
Western blot
Human Tissue lysate - whole (Human breast tumour)
Human breast tumour
2mg/kg doxorubicin and 0.1mg/kg zoledronic acid
Gel Running Conditions
Reduced Non-Denaturing (Native) (10 % polyacrylamide gel)
Blocking step
(agent) for 2 hour(s) and 0 minute(s) · Concentration: 1% · Temperature: 4°C

Dr. Penelope Ottewell

Verified customer

Submitted Jul 04 2008


I can confirm that the antibody does not detect any other caspases. Please do not hesitate to contact us if you require further information,

Read More


Thank you for your enquiry. Further to our telephone conversation this morning I have updated our datasheet regarding the specificity of this antibody for the uncleaved form of Caspase 9. I look forward to reading your Abreview. I have arranged for a free of charge replacement vial of ab25758 to be dispatched immediately (order number: 135138). I hope that this does not affect your choice of Abcam in the future.

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