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AB138878

Aspartate Aminotransferase Activity Assay Kit (Fluorometric)

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(6 Publications)

Aspartate Aminotransferase Activity Assay Kit / AST Assay Kit (Fluorometric) ab138878 provides a quick and sensitive assay for AST activity in biological samples.

View Alternative Names

cAspAT, Glutamate oxaloacetate transaminase 1, Transaminase A, cCAT, GOT1

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Functional Studies - Aspartate Aminotransferase Activity Assay Kit (Fluorometric) (AB138878)
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Supplier Data

Functional Studies - Aspartate Aminotransferase Activity Assay Kit (Fluorometric) (AB138878)

Sample Standard Curve for Aspartate Aminotransferase. AST dose response was measured with ab138878 in a 96-well black plate using a fluorescence microplate reader. As low as 2 mU/ml AST can be detected with 60 min incubation (n=3) at room temperature.

Key facts

Detection method

Fluorescent

Sample types

Serum, Other biological fluids

Assay type

Enzyme activity

Sensitivity

= 2 mU/mL

Assay Platform

Microplate reader

Reactivity data

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Product details

Aspartate Aminotransferase Activity Assay Kit / AST Assay Kit (Fluorometric) ab138878 provides a quick and sensitive assay for AST activity in biological samples.

In the AST assay protocol, AST catalyzes the reaction of aspartate and α-ketoglutarate to oxaloacetate and glutamate:

Aspartate (Asp) + α-ketoglutarate ⇌ oxaloacetate + glutamate (Glu)

The product L-glutamate is measured by the generation of a red fluorescent product through an enzyme coupled reaction cycle.

The assay signal can be read by a fluorescence microplate reader at Ex/Em = 530-570 nm/590-600 nm (optimal Ex/Em = 540 nm/590 nm). The AST activity assay can detect as little as 2 mU/mL AST in a 100 μL reaction volume. The assay is robust, and can be readily adapted for a wide variety of applications.

Aspartate aminotransferase (AST), also called Glutamic Oxaloacetic transaminase (GOT), is a member of transferase family. It catalyzes the reversible transfer of an α-amino group between aspartate and glutamate, and is an important enzyme in amino acid metabolism.

What's included?

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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.

Aspartate Aminotransferase (AST) also known as aspartate transaminase or aspartate transferase is an enzyme important for amino acid metabolism. Mechanically it catalyzes the reversible transfer of an amino group from aspartate to α-ketoglutarate forming oxaloacetate and glutamate. AST has a molecular mass of approximately 92 kDa and is expressed in various tissues with high levels found in liver heart muscle and kidneys. Its presence in these tissues highlights its importance in cellular metabolic processes.
Biological function summary

AST facilitates the interconversion between aspartate and oxaloacetate playing a role in the amino acid and urea cycles. Though not part of a large complex AST works closely with similar enzymes such as alanine aminotransferase (ALT) to maintain amino acid balance and support energy production. This enzymatic activity is important in nitrogen metabolism and glutamate use which are necessary for synthesizing other essential molecules within the cell.

Pathways

AST participates in the citric acid cycle and malate-aspartate shuttle enabling efficient energy production and NADH transport. The enzyme assists in converting oxaloacetate a pivotal intermediate in the citric acid cycle to keep the cycle active ensuring efficient cellular respiration. Additionally in the malate-aspartate shuttle AST works alongside malate dehydrogenase to facilitate the transfer of reducing equivalents across the mitochondrial membrane which is essential for ATP generation.

Elevated AST levels often indicate liver damage such as in hepatitis or cirrhosis reflecting its significant tissue expression. The enzyme is also linked to myocardial infarction as damaged heart muscle releases AST into the bloodstream. In these conditions AST serves as a biomarker for tissue damage often in conjunction with ALT levels allowing clinicians to assess the extent of liver or cardiac injury.

Product protocols

Target data

Biosynthesis of L-glutamate from L-aspartate or L-cysteine (PubMed : 21900944). Important regulator of levels of glutamate, the major excitatory neurotransmitter of the vertebrate central nervous system. Acts as a scavenger of glutamate in brain neuroprotection. The aspartate aminotransferase activity is involved in hepatic glucose synthesis during development and in adipocyte glyceroneogenesis. Using L-cysteine as substrate, regulates levels of mercaptopyruvate, an important source of hydrogen sulfide. Mercaptopyruvate is converted into H(2)S via the action of 3-mercaptopyruvate sulfurtransferase (3MST). Hydrogen sulfide is an important synaptic modulator and neuroprotectant in the brain. In addition, catalyzes (2S)-2-aminobutanoate, a by-product in the cysteine biosynthesis pathway (PubMed : 27827456).
See full target information Aspartate aminotransferase, cytoplasmic

Additional targets

GOT2

Publications (6)

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

Drug design, development and therapy 19:3735-3749 PubMed40356680

2025

Quantitative Proteomic Study Reveals Amygdalin Alleviates Liver Fibrosis Through Inhibiting mTOR/PDCD4/JNK Pathway in Hepatic Stellate Cells.

Applications

Unspecified application

Species

Unspecified reactive species

Hui Huang,Su-Jie Ru,Jia-Mei Chen,Wei Liu,Shan-Hua Fang,Qian Liu,Qian Meng,Ping Liu,Hu Zhou

Molecular medicine (Cambridge, Mass.) 30:82 PubMed38862918

2024

ERRFI1 exacerbates hepatic ischemia reperfusion injury by promoting hepatocyte apoptosis and ferroptosis in a GRB2-dependent manner.

Applications

Unspecified application

Species

Unspecified reactive species

Hang Zhao,Huizi Mao

iScience 26:107295 PubMed37554446

2023

Roquin-1 resolves sepsis-associated acute liver injury by regulating inflammatory profiles via miRNA cargo in extracellular vesicles.

Applications

Unspecified application

Species

Unspecified reactive species

Lei Zheng,Wei Ling,Deming Zhu,Zhi Li,Yousheng Li,Haoming Zhou,Lianbao Kong

Cell death and differentiation 29:514-526 PubMed34628485

2021

p53-mediated redox control promotes liver regeneration and maintains liver function in response to CCl.

Applications

Unspecified application

Species

Unspecified reactive species

Timothy J Humpton,Holly Hall,Christos Kiourtis,Colin Nixon,William Clark,Ann Hedley,Robin Shaw,Thomas G Bird,Karen Blyth,Karen H Vousden

Cell & bioscience 11:3 PubMed33407858

2021

Retinol from hepatic stellate cells via STRA6 induces lipogenesis on hepatocytes during fibrosis.

Applications

Unspecified application

Species

Unspecified reactive species

Injoo Hwang,Eun Ju Lee,Hyomin Park,Dodam Moon,Hyo-Soo Kim

Genes & development 35:117-132 PubMed33334825

2020

Differential requirements for MDM2 E3 activity during embryogenesis and in adult mice.

Applications

Unspecified application

Species

Unspecified reactive species

Timothy J Humpton,Koji Nomura,Julia Weber,Helge M Magnussen,Andreas K Hock,Colin Nixon,Sandeep Dhayade,David Stevenson,Danny T Huang,Douglas Strathdee,Karen Blyth,Karen H Vousden
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