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AB65308

Calpain Activity Assay Kit

4

(1 Review)

|

(93 Publications)

Calpain Activity Assay Kit ab65308 provides optimized buffers and reagents for a convenient measurement of calpain activity. Readout on fluorometric plate reader.

Individual kit components also available for purchase with a minimum order of 20 units. Contact us to discuss your needs.

View Alternative Names

CANPL1, PIG30, CAPN1, Calpain-1 catalytic subunit, Calcium-activated neutral proteinase 1, Calpain mu-type, Calpain-1 large subunit, Cell proliferation-inducing gene 30 protein, Micromolar-calpain, CANP 1, muCANP

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Functional Studies - Calpain Activity Assay Kit (AB65308)
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Supplier Data

Functional Studies - Calpain Activity Assay Kit (AB65308)

Typical Data for ab65308 : Active Calpain (1 µg) was incubated at 37 °C for one hour using the Calpain Substrate with or without 20 µM Calpain Inhibitor.

Functional Studies - Calpain Activity Assay Kit (AB65308)
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Lab

Functional Studies - Calpain Activity Assay Kit (AB65308)

10e7 Jurkat cells (in 10 mL) were cultured in the absence or presence of 10 μM Camptothecin (CPT) (ab120115) or 10 μg/mL Cycloheximide (CHX) (ab120093) for 4 hours. Pelleted cells were lysed in 0.5 mL of Extraction Buffer and tested directly. Background signal subtracted, duplicates; +/- SD.

Functional Studies - Calpain Activity Assay Kit (AB65308)
  • FuncS

Lab

Functional Studies - Calpain Activity Assay Kit (AB65308)

Different amounts of positive control (Calpain I) treated with 1 μL of inhibitor (Z-LLY-FMK), background signal subtracted, duplicates; +/- SD.

Other - Calpain Activity Assay Kit (AB65308)
  • Other

Supplier Data

Other - Calpain Activity Assay Kit (AB65308)

Representative image of Calpain Activity Assay Kit ab65308

Components shown from left to right :

- Calpain I Positive Control

- 10X Reaction Buffer

- Calpain Substrate

- Calpain Inhibitor

- Extraction Buffer

Note : The vial labels shown in this image use generic names for illustrative purposes only and may not exactly match the specific component names included in the kit.

Note : Colors of solutions in image may not precisely match the shade of colors in the actual kit.

Key facts

Detection method

Fluorescent

Sample types

Cell Lysate

Results type

Quantitative

Assay time

2h

Assay Platform

Microplate reader

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Reactivity", "Dilution Info", "Notes"] }, "values": { "Enzyme activity assay": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" } } }

Product details

Calpain Activity Assay Kit ab65308 provides optimized buffers and reagents for a convenient measurement of calpain activity.

The extraction buffer included in the kit specifically extracts cytosolic proteins without contamination by cell membrane and lysosome proteases. It also prevents auto-activation of calpain during the extraction procedure. Thus, the kit detects only activated calpain within the cytosol.

The calpain activity assay protocol is based on the detection of cleavage of calpain substrate Ac-LLY-AFC. Ac-LLY-AFC emits blue light (λmax = 400 nm); upon cleavage of the substrate by calpain, free AFC emits a yellow-green fluorescence (λmax = 505 nm), which can be quantified using a fluorometer or a fluorecence plate reader. Comparison of the fluorescence intensity from a treated sample with a normal control allows determination of the changes in calpain activity.

Calpain activity assay protocol summary
- add samples and positive and negative controls to wells
- add reaction buffer and calpain substrate
- incubate for 60 min
- analyze with a microplate reader

Other Notes
This product was previously called K240 Biovision Calpain Activity Fluorometric Assay Kit.

If additional Ac-LLY-AFC substrate is needed, it can be purchased separately as ab171379.

The Safety Datasheet for this product has been updated for certain countries. Please check the current version in the Support and downloads section.

What's included?

{ "values": { "100Test": { "sellingSize": "100 Test", "publicAssetCode":"ab65308-100Test", "assetComponentDetails": [ { "size":"1 x 25 mL", "name":"Extraction Buffer III", "number":"AB65308-CMP03", "productcode":"" }, { "size":"1 x 0.5 mL", "name":"Calpain Substrate", "number":"AB65308-CMP05", "productcode":"" }, { "size":"1 x 10 µL", "name":"Calpain Inhibitor", "number":"AB65308-CMP04", "productcode":"" }, { "size":"1 x 10 µL", "name":"Calpain I Positive Control", "number":"AB65308-CMP01", "productcode":"" }, { "size":"1 x 1.5 mL", "name":"10X Reaction Buffer", "number":"AB65308-CMP06", "productcode":"" } ] } } }

Properties and storage information

Shipped at conditions
Dry Ice
Appropriate short-term storage conditions
-80°C
Appropriate long-term storage conditions
-80°C
Storage information
Please refer to protocols

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Calpain 1 also known as CAPN1 is a calcium-dependent cysteine protease with a mass of approximately 80 kDa. It exhibits calpain activity by cleaving substrate proteins in a regulated manner. Calpain 1 expresses in various tissues including muscle brain and lens suggesting its involvement in diverse cellular processes. The enzyme is part of a larger calpain family with calpain-1 calpain-2 and other isoforms that demonstrate differing substrate specificities and regulatory mechanisms.
Biological function summary

Calpain 1 participates in cellular functions such as signal transduction cell cycle progression and apoptosis. It is not part of a complex but operates independently to modulate cellular responses by processing different target proteins. Calpain protein activity impacts cytoskeletal remodeling and membrane repair important processes in cell mobility and stability. Through its proteolytic actions calpain 1 influences neural plasticity and muscle function demonstrating its broad biological significance.

Pathways

Calpain 1 functions within the calcium signaling and apoptotic pathways highlighting its role in regulating cellular survival and death. Calcium influx triggers calpain activity linking it to proteins such as calmodulin and calcineurin that also respond to calcium signals. Calpain-1 modulates apoptosis by targeting Bcl-2 family proteins influencing cell fate during stress responses. The calpain assay measures its activity providing insights into its contribution to these vital pathways.

Calpain 1 connects to neurodegenerative diseases like Alzheimer's and muscular diseases such as muscular dystrophy. Alzheimer's disease features abnormal calpain activity affecting tau protein and amyloid precursor protein processing. In muscular dystrophy calpain-1's unregulated activity leads to excessive muscle degradation aggravating the disease condition. Its interaction with spectrin and dystrophin proteins suggests a mechanistic role in the pathogenesis of these disorders pinpointing calpain-1 as a potential therapeutic target.

Product protocols

Target data

Calcium-regulated non-lysosomal thiol-protease which catalyzes limited proteolysis of substrates involved in cytoskeletal remodeling and signal transduction (PubMed : 19617626, PubMed : 21531719, PubMed : 2400579). Proteolytically cleaves CTBP1 at 'Asn-375', 'Gly-387' and 'His-409' (PubMed : 23707407). Cleaves and activates caspase-7 (CASP7) (PubMed : 19617626).
See full target information CAPN1

Publications (93)

Recent publications for all applications. Explore the full list and refine your search

Cells 14: PubMed40558522

2025

Deficiency Aggravates Adriamycin-Induced Nephropathy Accompanied by Focal Adhesion Disassembly and Stress Fiber Disorganization.

Applications

Unspecified application

Species

Unspecified reactive species

Li-Nan Xu,Ying-Ying Sun,Yan-Feng Tan,Xin-Yue Zhou,Tian-Chao Xiang,Ye Fang,Fei Li,Qian Shen,Hong Xu,Jia Rao

International journal of molecular sciences 26: PubMed40244142

2025

MnO Nanocrystal-Induced Eryptosis Features Ca Overload, ROS and RNS Accumulation, Calpain Activation, Recruitment of Caspases, and Changes in the Lipid Order of Cell Membranes.

Applications

Unspecified application

Species

Unspecified reactive species

Yuriy Kot,Volodymyr Prokopiuk,Vladimir Klochkov,Liliya Tryfonyuk,Pavel Maksimchuk,Andrey Aslanov,Kateryna Kot,Oleg Avrunin,Lesya Demchenko,Saulesh Kurmangaliyeva,Anatolii Onishchenko,Svetlana Yefimova,Ondrej Havranek,Anton Tkachenko

Renal failure 47:2447801 PubMed39780511

2025

Piezo1 aggravates ischemia/reperfusion-induced acute kidney injury by Ca-dependent calpain/HIF-1α/Notch signaling.

Applications

Unspecified application

Species

Unspecified reactive species

Xiaoting Chen,Jintao Jiang,Bin He,Shangfei Luo,Qiaorui Tan,Youfen Yao,Rentao Wan,Honglin Xu,Silin Liu,Xianmei Pan,Xin Chen,Jing Li

BMC biology 22:209 PubMed39289752

2024

Cyclic stretch enhances neutrophil extracellular trap formation.

Applications

Unspecified application

Species

Unspecified reactive species

Manijeh Khanmohammadi,Habiba Danish,Nadia Chandra Sekar,Sergio Aguilera Suarez,Chanly Chheang,Karlheinz Peter,Khashayar Khoshmanesh,Sara Baratchi

Nature communications 15:7023 PubMed39174529

2024

Piezo1 expression in neutrophils regulates shear-induced NETosis.

Applications

Unspecified application

Species

Unspecified reactive species

Sara Baratchi,Habiba Danish,Chanly Chheang,Ying Zhou,Angela Huang,Austin Lai,Manijeh Khanmohammadi,Kylie M Quinn,Khashayar Khoshmanesh,Karlheinz Peter

Molecular therapy. Methods & clinical development 32:101268 PubMed38911286

2024

SERCA2a overexpression improves muscle function in a canine Duchenne muscular dystrophy model.

Applications

Unspecified application

Species

Unspecified reactive species

Kasun Kodippili,Chady H Hakim,Matthew J Burke,Yongping Yue,James A Teixeira,Keqing Zhang,Gang Yao,Gopal J Babu,Roland W Herzog,Dongsheng Duan

NPJ microgravity 10:62 PubMed38862543

2024

Bioreactor development for skeletal muscle hypertrophy and atrophy by manipulating uniaxial cyclic strain: proof of concept.

Applications

Unspecified application

Species

Unspecified reactive species

Khaled Y Kamal,Mariam Atef Othman,Joo-Hyun Kim,John M Lawler

Neurochemistry international 175:105697 PubMed38364938

2024

A novel combination approach to effectively reduce inflammation and neurodegeneration in multiple sclerosis models.

Applications

Unspecified application

Species

Unspecified reactive species

Azizul Haque,Nicole N M Trager,Jonathan T Butler,Arabinda Das,Vandana Zaman,Naren L Banik

Arthritis research & therapy 25:212 PubMed37884942

2023

ACSL4 inhibition prevents macrophage ferroptosis and alleviates fibrosis in bleomycin-induced systemic sclerosis model.

Applications

Unspecified application

Species

Unspecified reactive species

Dianyu Cao,Jina Zheng,Zheng Li,Yong Yu,Zengrui Chen,Qiang Wang

Journal of the American Society of Nephrology : JASN 34:1823-1842 PubMed37678257

2023

Podocyte Injury in Diabetic Kidney Disease in Mouse Models Involves TRPC6-mediated Calpain Activation Impairing Autophagy.

Applications

Unspecified application

Species

Unspecified reactive species

Yann Salemkour,Dilemin Yildiz,Léa Dionet,Daan C 't Hart,Kim A T Verheijden,Ryuta Saito,Nassim Mahtal,Jean-Daniel Delbet,Emmanuel Letavernier,Marion Rabant,Alexandre Karras,Johan van der Vlag,Tom Nijenhuis,Pierre-Louis Tharaux,Olivia Lenoir
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