Product: Cleaved-Caspase 1 (Ala317), p10 Antibody
Catalog: AF4022
Source: Rabbit
Application: WB, IHC, IF/ICC
Reactivity: Human, Mouse, Rat
Prediction: Pig, Bovine, Horse, Rabbit, Dog
Mol.Wt.: 10kD(active); 45kD(Calculated).
Uniprot: P29466
RRID: AB_2845464

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Product Info

WB 1:500-1:2000, IHC 1:50-1:200, IF/ICC 1:100-1:500
*The optimal dilutions should be determined by the end user.

WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.

Pig(100%), Bovine(100%), Horse(88%), Rabbit(100%), Dog(88%)
Cleaved-Caspase-1 (Ala317,p10) Antibody detects endogenous levels of fragment of activated Caspase-1 resulting from cleavage adjacent to Ala317.
Cite Format: Affinity Biosciences Cat# AF4022, RRID:AB_2845464.
The antiserum was purified by peptide affinity chromatography using SulfoLink™ Coupling Resin (Thermo Fisher Scientific).
Rabbit IgG in phosphate buffered saline , pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol. Store at -20 °C. Stable for 12 months from date of receipt.


CASP-1; CASP1; CASP1_HUMAN; Caspase 1; Caspase-1 subunit p10; ICE; IL-1 beta-converting enzyme; IL-1BC; IL1 beta converting enzyme; IL1B convertase; Interleukin 1 beta convertase; Interleukin 1B converting enzyme; Interleukin-1 beta convertase; Interleukin-1 beta-converting enzyme; p45;



Expressed in larger amounts in spleen and lung. Detected in liver, heart, small intestine, colon, thymus, prostate, skeletal muscle, peripheral blood leukocytes, kidney and testis. No expression in the brain.




Score>80(red) has high confidence and is suggested to be used for WB detection. *The prediction model is mainly based on the alignment of immunogen sequences, the results are for reference only, not as the basis of quality assurance.

Model Confidence:
High(score>80) Medium(80>score>50) Low(score<50) No confidence

PTMs - P29466 As Substrate

Site PTM Type Enzyme
S16 Phosphorylation
T21 Phosphorylation
T32 Phosphorylation
K37 Ubiquitination
K44 Ubiquitination
T49 Phosphorylation
K53 Ubiquitination
K134 Ubiquitination
K148 Ubiquitination
S149 Phosphorylation
K158 Ubiquitination
K204 Ubiquitination
T226 Phosphorylation
S227 Phosphorylation
K268 Ubiquitination
K274 Ubiquitination
K278 Ubiquitination
S306 Phosphorylation
K319 Ubiquitination
K320 Ubiquitination
K325 Ubiquitination
S376 Phosphorylation

Research Backgrounds


Thiol protease that cleaves IL-1 beta between an Asp and an Ala, releasing the mature cytokine which is involved in a variety of inflammatory processes. Important for defense against pathogens. Cleaves and activates sterol regulatory element binding proteins (SREBPs). Can also promote apoptosis. Upon inflammasome activation, during DNA virus infection but not RNA virus challenge, controls antiviral immunity through the cleavage of CGAS, rendering it inactive. In apoptotic cells, cleaves SPHK2 which is released from cells and remains enzymatically active extracellularly.


The two subunits are derived from the precursor sequence by an autocatalytic mechanism.

Subcellular Location:

Cytoplasm. Cell membrane.

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionSubcellular location
Tissue Specificity:

Expressed in larger amounts in spleen and lung. Detected in liver, heart, small intestine, colon, thymus, prostate, skeletal muscle, peripheral blood leukocytes, kidney and testis. No expression in the brain.

Subunit Structure:

Heterotetramer that consists of two anti-parallel arranged heterodimers, each one formed by a 20 kDa (p20) and a 10 kDa (p10) subunit. The p20 subunit can also form a heterodimer with the epsilon isoform which then has an inhibitory effect. May be a component of the inflammasome, a protein complex which also includes PYCARD, CARD8 and NALP2 and whose function would be the activation of proinflammatory caspases. Both the p10 and p20 subunits interact with MEFV. Interacts with CARD17/INCA and CARD18. Interacts with SERPINB1; this interaction regulates CASP1 activity.


Belongs to the peptidase C14A family.

Research Fields

· Cellular Processes > Cell growth and death > Necroptosis.   (View pathway)

· Human Diseases > Neurodegenerative diseases > Amyotrophic lateral sclerosis (ALS).

· Human Diseases > Infectious diseases: Bacterial > Salmonella infection.

· Human Diseases > Infectious diseases: Bacterial > Pertussis.

· Human Diseases > Infectious diseases: Bacterial > Legionellosis.

· Human Diseases > Infectious diseases: Viral > Influenza A.

· Organismal Systems > Immune system > NOD-like receptor signaling pathway.   (View pathway)

· Organismal Systems > Immune system > Cytosolic DNA-sensing pathway.   (View pathway)


1). Poh L et al. AIM2 Inflammasome Mediates Hallmark Neuropathological Alterations and Cognitive Impairment in a Mouse Model of Vascular Dementia. Mol Psychiatry 2021 Aug;26(8):4544-4560. (PubMed: 33299135) [IF=13.437]

2). Zhao Y et al. p66Shc Contributes to Liver Fibrosis through the Regulation of Mitochondrial Reactive Oxygen Species. Theranostics 2019 Feb 20;9(5):1510-1522 (PubMed: 30867846) [IF=11.600]

Application: WB    Species: mouse    Sample: Liver

Figure 2.| p66Shc silencing attenuates liver fibrosis in mice. p66Shc silencing was induced via lentivirus delivered to C57BL/6 mice exposed to CCl4 (2 ml/kg). (A) Liver p66Shc mRNA expression, n=6. (B) Liver p66Shc, SOD2, UCP1, Col1a1, α-SMA protein, n=3. (C) H2O2 content, n=8. (D) SOD activity, n=8. (E) Cytochrome c expression in the cytoplasm and mitochondria, n=3. (F) H&E and Masson staining. Scale bar, 200 μm. (G) Ishak score of Masson staining. (H) Serum ALT and AST levels, n=8. (I) Liver NLRP3 inflammasome protein expression, n=3.

3). Peng C et al. Murine Chronic Pancreatitis Model Induced by Partial Ligation of the Pancreatic Duct Encapsulates the Profile of Macrophage in Human Chronic Pancreatitis. Front Immunol 2022 Apr 1;13:840887. (PubMed: 35432336) [IF=8.786]

Application: IF/ICC    Species: mouse    Sample: macrophages

FIGURE 6 | Pyroptotic macrophages (F4/80+Cleaved-Caspase1+cells) were observed more in AP, which decreased over time in CP. (A) Immunofluorescence staining of pancreatic pyroptotic macrophages in mice model of pancreatitis at different time points.

4). Yang K et al. Physicochemical characterization of polysaccharide from the leaf of Dendrobium officinale and effect on LPS induced damage in GES-1 cell. Int J Biol Macromol 2020 Jan 13 (PubMed: 31945440) [IF=8.025]

Application: WB    Species: Human    Sample: GES-1 cells

Fig. 9. LDOP-1 protects LPS-induced GES-1 damage through inhibiting the TLR4/NF-kb signaling pathway. (A) The protein expressions of cleaved-IL-1β, IL-6, pro-caspase 1 Caspase 1, NF- κB, phospho-NF-κB, TLR4, NLRP3, ASC, phospho-IκBα and IκBα, (B–D) Expression levels of Cleaved-IL-1β, IL-6 and ASC protein were analyzed. (E–G) Protein expression levels ratio of cleaved-caspase-1 to pro-caspase-1, phospho-IκBα to IκBα and, phospho-NF-кB to NF-κB. (H–I) Expression levels of NLRP3 and TLR4 protein were analyzed. The location assay of by laser scanning confocal microscopy. β-Actin was used as control. (J) Expression of IL-6 were observed by fluorescence microscopy, red indicated positive immunofluorescence results for IL-6, blue indicated the result of DAPI. The data were presented as the mean ± SD from three independent experiments (n = 3). Compared to the control group, #p b 0.05, ##p b 0.01; compared to the model group *p b 0.05, **p b 0.01.

5). Zhao X et al. Quercetin Protects Ethanol-Induced Hepatocyte Pyroptosis via Scavenging Mitochondrial ROS and Promoting PGC-1α-Regulated Mitochondrial Homeostasis in L02 Cells. Oxid Med Cell Longev 2022 Jul 16;2022:4591134. (PubMed: 35879991) [IF=7.310]

6). Ma B et al. TSPO Ligands Protect against Neuronal Damage Mediated by LPS-Induced BV-2 Microglia Activation. Oxid Med Cell Longev 2022 Mar 30;2022:5896699. (PubMed: 35401924) [IF=7.310]

Application: WB    Species: mouse    Sample: BV-2 microglia cells

Figure 3: | TSPO ligands inhibited neuroinflammatory reactions in LPS-activated BV-2 microglia cells in the BV-2-NSC34 Transwell coculture system. (c–e) Cleaved Caspase-1 and NLRP3 expression in BV-2 microglia cells based on Western blot analysis.

Application: IF/ICC    Species: mouse    Sample: BV-2 microglia cells

Figure S5:| Representative images showing Cleaved Caspase-1 (A) and NLRP3 (B)expression with immunofluorescence in BV-2 microglia cells in BV-2-NSC34 Transwell co-culture system.Mida+LPS: Midazolam+LPS. Scale bar, 20 µm.

7). Ding S et al. Resveratrol alleviates chronic "real-world" ambient particulate matter-induced lung inflammation and fibrosis by inhibiting NLRP3 inflammasome activation in mice. Ecotoxicol Environ Saf 2019 Oct 30;182:109425 (PubMed: 31295660) [IF=7.129]

8). Zhen ZD et al. Growth hormone attenuates the brain damage caused by ZIKV infection in mice. Virol Sin 2022 Jun 15;S1995-820X(22)00110-9. (PubMed: 35714850) [IF=6.947]

9). Chen J et al. Study on the inhibitive effect of Catalpol on diabetic nephropathy. Life Sci 2020 Sep 15;257:118120. (PubMed: 32693244) [IF=6.780]

Application: WB    Species: Mice    Sample: kidney tissue

Fig. 6. Cat inhibited inflammation related proteins in the HG-induced podocyte model. (A) Relative expressions of p-NF-κB, ASC, Cleaved IL-1β, NLRP3, Cleaved caspase1 and GSDMD-N. (B) The densitometric quantification results of p-NF-κB, ASC, Cleaved IL-1β, NLRP3, Cleaved caspase-1 and GSDMD-N. Values are shown as Mean ± SEM, #p < 0.05 and ##p < 0.01 vs Ctrl; *p < 0.05 and **p < 0.01 vs HG; &p < 0.05 and &&p < 0.01 vs Cat 10 μM

10). Li H et al. Quercetin improves cognitive disorder in aging mice by inhibiting NLRP3 inflammasome activation. Food Funct 2020 Dec 18. (PubMed: 33338087) [IF=6.317]

Application: WB    Species: Mice    Sample:

Fig. 5 The intervention of quercetin can increase SIRT1 expression and prevent the increase of NLRP3 inflammasomes. The results of immunoblotting are shown in A and B. C–H represent the protein quantification results of SIRT1, NLRP3, ASC, IL-18, cleaved-caspase-1, and IL-1β, respectively. Aging + QL: quercetin (35 mg kg−1 d−1 ); and aging + QH: quercetin (70 mg kg−1 d−1 ). Data are presented as mean ± SEM (n = 10 per group). #P < 0.05, ##P < 0.01 vs. control group; *P < 0.05, **P < 0.01, ***P < 0.001 vs. aging group

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