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Synonyms
Glutathione S-transferase alpha 4, GSTA4-4, GTA4
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Alternative_names
Glutathione S-transferase alpha 4, GSTA4-4, GTA4
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Description
Involved in cellular defense against toxic, carcinogenic, and pharmacologically active electrophilic compounds
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Recombinant
Yes
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Source
E. coli.
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Purity by SDS PAGE
≥95%
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Assay
SDS-PAGE
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Biological activity
Specific activity > 0.9 units/mg, one unit is defined as the amount of enzyme that conjugate 1.0 µmole of 1-chloro-2, 4- dinitrobenzene (CDNB), with reduced glutathione per minute pH 6.5 at 25ºC.
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Results
Specific activity > 0.9 units/mg
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Unit Definition
One unit is defined as the amount of enzyme that conjugate 1.0 µmole of 1-chloro-2, 4- dinitrobenzene (CDNB), with reduced glutathione per minute pH 6.5 at 25ºC.
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Molecular Weight
28.3 kDa (246 aa, 1-222 aa + His Tag)
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Storage Temp
-20°C
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Shipping
gel pack
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Shelf Life
12 months
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Concentration
1 mg/ml
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Appearance
Liquid
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Physical form description
1 mg/ml solution 20 mM Tris-HCl buffer, pH 8.0, 20% glycerol, 2 mM DTT and 100 mM NaCl.
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Background Information
GSTA4, also known as glutathione S-transferase A4, belongs to the GST superfamily. This enzyme is involved in cellular defense against toxic, carcinogenic, and pharmacologically active electrophilic compounds. GSTA4 shows very high activity with reactive carbonyl compounds such as alk-2-enals. GSTA4 is highly effective in catalyzing the conjugate addition of reduced glutathione to 4-hydroxynonenal, an important product of peroxidative degradation of arachidonic acid and a commonly used biomarker for oxidative damage in tissue. This enzyme is expressed at a high level in brain, placenta, and skeletal muscle and much lower in lung and liver. Recombinant human GSTA4 protein, fused to His-tag at N-terminus, was expressed in E.Coli and purified by using conventional chromatography techniques.
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Amino acid sequence
MGSSHHHHHH SSGLVPRGSH MGSHMAARPK LHYPNGRGRM ESVRWVLAAA GVEFDEEFLE TKEQLYKLQD GNHLLFQQVP MVEIDGMKLV QTRSILHYIA DKHNLFGKNL KERTLIDMYV EGTLDLLELL IMHPFLKPDD QQKEVVNMAQ KAIIRYFPVF EKILRGHGQS FLVGNQLSLA DVILLQTILA LEEKIPNILS AFPFLQEYTV KLSNIPTIKR FLEPGSKKKP PPDEIYVRTV YNIFRP
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Handling
Centrifuge the vial prior to opening.
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Usage
For Research Use Only! Not to be used in humans
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Properties
Human proteins, cDNA and human recombinants are used in human reactive ELISA kits and to produce anti-human mono and polyclonal antibodies. Modern humans (Homo sapiens, primarily ssp. Homo sapiens sapiens). Depending on the epitopes used human ELISA kits can be cross reactive to many other species. Mainly analyzed are human serum, plasma, urine, saliva, human cell culture supernatants and biological samples.
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Additional source
Recombinants or rec. proteins
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Group
recombinants
