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G8255

Sigma-Aldrich

Glutamic-Pyruvic Transaminase from porcine heart

lyophilized powder, ≥75 units/mg protein

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Synonym(s):
L-Alanine: 2-Oxoglutarate Aminotransferase, Alanine Aminotransferase (catalytic concentration), GPT
CAS Number:
9000-86-6
Enzyme Commission number:
2.6.1.2 (BRENDA, IUBMB)
Beilstein:
3562140
EC Number:
232-561-4
MDL number:
MFCD00131192
NACRES:
NA.54

biological source

Porcine heart

Quality Level

200

form

lyophilized powder

specific activity

≥75 units/mg protein

composition

Protein, 75-95%

storage condition

(Tightly closed. Dry. Keep locked up or in an area accessible only to qualified or authorized
persons)

technique(s)

cell culture | mammalian: suitable

color

light yellow to yellow

foreign activity

L-glutamic dehydrogenase, lactic dehydrogenase and malic dehydrogenase ≤0.01%
glutamic-oxalacetic transaminase ≤0.1%

storage temp.

−20°C

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General description

Glutamic-pyruvic transaminase (GPT) is localized majorly in the liver.

Research area: Cell Signaling

Application

Glutamic-Pyruvic Transaminase from porcine heart has been used:
  • in the transamination assay with a racemic mixture of synthetic 3-methyl-2-oxoglutarate
  • to remove glutamate from the cell culture medium used for culturing human embryonic kidney (HEK293) cells
  • in the lactate-dehydrogenase (LD)-coupled alanine transaminase (ALT) reaction kinetic studies

Biochem/physiol Actions

Glutamic-pyruvic transaminase (GPT) mediates the transfer of the amino group to α-ketoglutarate from l-alanine which results in pyruvate and glutamate.Thereby GPT plays a key role in gluconeogenesis and amino acid metabolism. The role of GPT in various kinds of tumors has been reported.
Glutamic-pyruvic transaminase (GPT) is located in most cells in the body, but is found in highest concentrations in the liver. It is used as a marker of liver disease due to the release of GPT into the blood following liver cell necrosis.

Unit Definition

One unit will convert 1.0 μmole of α-ketoglutarate to L-glutamate per min at pH 7.6 at 37 °C in the presence of L-alanine.

Physical form

Lyophilized powder containing citrate and acetate

Analysis Note

Protein determined by biuret

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H334

Precautionary Statements

P261 - P284 - P501

Hazard Classifications

Resp. Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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A Comprehensive Guide to Toxicology in Nonclinical Drug Development
Faqi A S
Biomarkers journal., 2017 null
Giordano Pula et al.
Journal of biochemical and biophysical methods, 64(3), 167-181 (2005-08-23)
The surface expression of G protein-coupled receptors is regulated by internalization. For many receptors, a constitutive level of internalization in the absence of agonist has been reported. The constitutive internalization of metabotropic glutamate receptor 1a (mGluR1a) has been described, but
Wei Guo et al.
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Metabolic reprogramming is an essential hallmark of cancer. Besides the "Warburg effect", cancer cells also actively reprogram amino acid metabolism to satisfy high nutritional demands in a nutrient-poor environment. In the glucose-alanine cycle, exogenous alanine taken up by hepatocytes is
Christoph Mahlert et al.
Journal of the American Chemical Society, 129(39), 12011-12018 (2007-09-06)
The acidic lipopeptides, including the calcium-dependent antibiotics (CDA), daptomycin, and A54145, are important macrocyclic peptide natural products produced by Streptomyces species. All three compounds contain a 3-methyl glutamate (3-MeGlu) as the penultimate C-terminal residue, which is important for bioactivity. Here
A simple and sensitive detection of glutamic-pyruvic transaminase activity based on fluorescence quenching of bovine serum albumin
Chen M, et al.
Royal Society of Chemistry Advances, 5, 103557-103562 (2015)
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