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AB234051

Chymotrypsin Assay Kit (Fluorometric)

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(5 Publications)

Chymotrypsin Assay Kit (Fluorometric) (ab234051) uses a synthetic fluorogenic substrate, enabling kinetic measurement of chymotrypsin activity in cell and tissue lysates.

View Alternative Names

CLCR, CTRC, Chymotrypsin-C, Caldecrin

6 Images
Functional Studies - Chymotrypsin Assay Kit (Fluorometric) (AB234051)
  • FuncS

Supplier Data

Functional Studies - Chymotrypsin Assay Kit (Fluorometric) (AB234051)

Coumarin standard curves showing a range of 0-1 nmol/well

Functional Studies - Chymotrypsin Assay Kit (Fluorometric) (AB234051)
  • FuncS

Supplier Data

Functional Studies - Chymotrypsin Assay Kit (Fluorometric) (AB234051)

Chymotrypsin activity with and without inhibitor in rat pancreas and rat spleen.

The presence of non-specific chymotrypsin-like proteases in spleen leads to some activity in presence of the selective chymotrypsin inhibitor.

Functional Studies - Chymotrypsin Assay Kit (Fluorometric) (AB234051)
  • FuncS

Supplier Data

Functional Studies - Chymotrypsin Assay Kit (Fluorometric) (AB234051)

Reaction kinetics for positive control and rat pancreatic lysate (9 μg)

Functional Studies - Chymotrypsin Assay Kit (Fluorometric) (AB234051)
  • FuncS

Supplier Data

Functional Studies - Chymotrypsin Assay Kit (Fluorometric) (AB234051)

Reaction kinetics using substrate in the presence of Chymotrypsin or Trypsin.

The substrate is cleaved by chymotrypsin but not trypsin, making the assay free from trypsin interference.

Functional Studies - Chymotrypsin Assay Kit (Fluorometric) (AB234051)
  • FuncS

Supplier Data

Functional Studies - Chymotrypsin Assay Kit (Fluorometric) (AB234051)

Coumarin standard curves showing a range of 0-10 nmol/well

Functional Studies - Chymotrypsin Assay Kit (Fluorometric) (AB234051)
  • FuncS

Supplier Data

Functional Studies - Chymotrypsin Assay Kit (Fluorometric) (AB234051)

Reaction kinetics for rat spleen lysate (160 μg)

Key facts

Detection method

Fluorescent

Sample types

Tissue Lysate, Cell Lysate

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

Chymotrypsin Assay Kit (Fluorometric) (ab234051) uses a synthetic fluorogenic substrate, enabling kinetic measurement of chymotrypsin activity in cell and tissue lysates. A chymotrypsin activator cleaves chymotrypsinogen to form active chymotrypsin, which then hydrolyzes the non-fluorescent substrate to release a stable fluorophore. The kit includes a selective chymotrypsin inhibitor that can be used to measure specific chymotrypsin activity in samples containing non-specific proteases and endopeptidases that may also metabolize the substrate. The assay can detect as low as 0.01 mU of Chymotrypsin.

This product is manufactured by BioVision, an Abcam company and was previously called K352 Chymotrypsin Activity Assay Kit (Fluorometric). K352-100 is the same size as the 100 test size of ab234051.

Chymotrypsin (EC 3.4.21.1) is a key serine protease involved in dietary protein digestion in mammals. It is primarily produced by the pancreas, but may be expressed in other tissues, including spleen and liver. In the pancreas, chymotrypsin is initially expressed as the inactive proenzyme chymotrypsinogen, which is cleaved by other proteases to chymotrypsin, its active form. Chymotrypsin specifically cleaves peptide bonds at the C-terminal end of bulky hydrophobic or aromatic amino acids (such as tyrosine, tryptophan or phenylalanine).

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":"ab234051-100Test", "assetComponentDetails": [ { "size":"1 x 1 Vial", "name":"Chymotrypsin Positive Control", "number":"AB234051-CMP05", "productcode":"" }, { "size":"1 x 1 Vial", "name":"Chymotrypsin Activator", "number":"AB234051-CMP02", "productcode":"" }, { "size":"1 x 25 mL", "name":"Assay Buffer 1", "number":"AB234051-CMP03", "productcode":"" }, { "size":"1 x 100 µL", "name":"AMC Standard", "number":"AB234051-CMP01", "productcode":"" }, { "size":"1 x 200 µL", "name":"Chymotrypsin Substrate", "number":"AB234051-CMP06", "productcode":"" }, { "size":"1 x 80 µL", "name":"Chymotrypsin Inhibitor I", "number":"AB234051-CMP04", "productcode":"" } ] } } }

Properties and storage information

Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
-20°C
Appropriate long-term storage conditions
-20°C
Storage information
-20°C

Supplementary information

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

Chymotrypsin also known as chymotrypsinogen when in its inactive precursor form and chymotrypsine stands out as a serine protease enzyme with a molecular weight around 25 kDa. Mechanically chymotrypsin catalyzes the hydrolysis of peptide bonds especially those containing aromatic amino acids like phenylalanine tyrosine and tryptophan. The enzyme exhibits a preference for cleaving at the carboxyl side of these amino acids. Chymotrypsin is mainly expressed in the acinar cells of the pancreas where it aids in the digestive process. The enzyme becomes active upon cleavage by trypsin another serine protease forming chymotrypsin and trypsin as active proteolytic enzymes.
Biological function summary

The enzyme plays an essential role in the digestion of proteins within the small intestine. Chymotrypsin contributes significantly to breaking down dietary proteins into smaller peptides and amino acids which are easier to absorb. During this process chymotrypsin partners with other pancreatic enzymes such as trypsin making up a proteolytic cascade. Chymotrypsin activity ensures efficient protein digestion which is important for nutrient absorption and metabolism. The enzyme's product which results from substrate cleavage is integral to various physiological processes.

Pathways

Chymotrypsin is intricately involved in the digestive enzymatic cascade that ensures proper digestion and absorption of nutrients. The proteolytic activity of chymotrypsin and trypsin in the digestive system forms part of the broader system of exocrine pancreatic secretion. This pathway which involves various enzymes like elastase and chemotrypsin facilitates the efficient processing of proteins and is critical for maintaining metabolic homeostasis. Chymotrypsin's interaction with other enzymes highlights its significance in these pathways.

Abnormal chymotrypsin activity can link to certain pancreatic disorders such as chronic pancreatitis where enzyme secretion disrupts. This disruption may relate through the dysfunction of other enzymes including trypsin. Moreover hereditary pancreatitis associates with mutations affecting the regulation of the enzyme or its precursor chymotrypsinogen. Understanding these associations helps to elucidate the role of chymotrypsin protein in various pathological states shedding light on the importance of maintaining its normal function to prevent disease progression.

Product protocols

Target data

Regulates activation and degradation of trypsinogens and procarboxypeptidases by targeting specific cleavage sites within their zymogen precursors. Has chymotrypsin-type protease activity and hypocalcemic activity.
See full target information CTRC

Publications (5)

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

Nature communications 16:152 PubMed39747827

2025

Development of small molecule non-covalent coronavirus 3CL protease inhibitors from DNA-encoded chemical library screening.

Applications

Unspecified application

Species

Unspecified reactive species

Hengrui Liu,Arie Zask,Farhad Forouhar,Sho Iketani,Alana Williams,Daniel R Vaz,Dahlya Habashi,Karenna Choi,Samuel J Resnick,Seo Jung Hong,David H Lovett,Tian Bai,Alejandro Chavez,David D Ho,Brent R Stockwell

Animals : an open access journal from MDPI 14: PubMed38929368

2024

Effect of a Multi-Species Direct-Fed Microbial on Growth Performance, Nutrient Digestibility, Intestinal Morphology and Colonic Volatile Fatty Acids in Weanling Pigs.

Applications

Unspecified application

Species

Unspecified reactive species

Panumas Kongpanna,John A Doerr,Dachrit Nilubol,Uttra Jamikorn

Nature communications 13:1891 PubMed35393402

2022

Development of optimized drug-like small molecule inhibitors of the SARS-CoV-2 3CL protease for treatment of COVID-19.

Applications

Unspecified application

Species

Unspecified reactive species

Hengrui Liu,Sho Iketani,Arie Zask,Nisha Khanizeman,Eva Bednarova,Farhad Forouhar,Brandon Fowler,Seo Jung Hong,Hiroshi Mohri,Manoj S Nair,Yaoxing Huang,Nicholas E S Tay,Sumin Lee,Charles Karan,Samuel J Resnick,Colette Quinn,Wenjing Li,Henry Shion,Xin Xia,Jacob D Daniels,Michelle Bartolo-Cruz,Marcelo Farina,Presha Rajbhandari,Christopher Jurtschenko,Matthew A Lauber,Thomas McDonald,Michael E Stokes,Brett L Hurst,Tomislav Rovis,Alejandro Chavez,David D Ho,Brent R Stockwell

American journal of human genetics 108:1852-1865 PubMed34559995

2021

A 584 bp deletion in CTRB2 inhibits chymotrypsin B2 activity and secretion and confers risk of pancreatic cancer.

Applications

Unspecified application

Species

Unspecified reactive species

Ashley Jermusyk,Jun Zhong,Katelyn E Connelly,Naomi Gordon,Sumeth Perera,Ehssan Abdolalizadeh,Tongwu Zhang,Aidan O'Brien,Jason W Hoskins,Irene Collins,Daina Eiser,Chen Yuan,Harvey A Risch,Eric J Jacobs,Donghui Li,Mengmeng Du,Rachael Z Stolzenberg-Solomon,Alison P Klein,Jill P Smith,Brian M Wolpin,Stephen J Chanock,Jianxin Shi,Gloria M Petersen,Christopher J Westlake,Laufey T Amundadottir

Gastroenterology 158:1072-1082.e7 PubMed31419436

2019

Transgenic Expression of PRSS1 Sensitizes Mice to Pancreatitis.

Applications

Unspecified application

Species

Unspecified reactive species

Haojie Huang,Agnieszka Katarzyna Swidnicka-Siergiejko,Jaroslaw Daniluk,Sebastian Gaiser,Yao Yao,Lisi Peng,Yang Zhang,Yan Liu,Minyu Dong,Xianbao Zhan,Huamin Wang,Yan Bi,Zhaoshen Li,Baoan Ji,Craig D Logsdon
View all publications
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