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29996

Sigma-Aldrich

ω-Transaminase

≥0.5 U/mg

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About This Item

CAS Number:
Enzyme Commission number:
MDL number:
UNSPSC Code:
12352204

recombinant

expressed in E. coli

form

powder

specific activity

≥0.5 U/mg

storage temp.

2-8°C

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Biochem/physiol Actions

ω-transaminase catalyzes the removal of the amino group from an amino acid and attaches it to an α-keto acid, producing a new amino acid. Unlike α-transaminase, ω-transaminase shows catalytic activity towards primary amine compounds that do not have a carboxylic group.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Unit Definition

1 U corresponds to the amount of enzyme which converts 1μmol S-α-methylbenzylamine to acetophenone per minute at pH 7.2 and 25°C (in the presence of pyruvate and pyridoxal-5-phosphate)

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

Resp. Sens. 1 - Skin Sens. 1

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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Certificates of Analysis (COA)

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Enzymatic studies on the metabolism of beta-alanine.
O HAYAISHI et al.
The Journal of biological chemistry, 236, 781-790 (1961-03-01)
N Watanabe et al.
Journal of biochemistry, 105(1), 1-3 (1989-01-01)
The three-dimensional structure of omega-amino acid:pyruvate aminotransferase from Pseudomonas sp. F-126, an isologous alpha 4 tetramer containing pyridoxal 5'-phosphate (PLP) as a cofactor, has been determined at 2.0 A resolution. The diffraction data were collected with a newly developed Weissenberg
Hyungdon Yun et al.
Applied and environmental microbiology, 70(4), 2529-2534 (2004-04-07)
Alcaligenes denitrificans Y2k-2 was obtained by selective enrichment followed by screening from soil samples, which showed omega-amino acid:pyruvate transaminase activity, to kinetically resolve aliphatic beta-amino acid, and the corresponding structural gene (aptA) was cloned. The gene was functionally expressed in
J S Shin et al.
Bioscience, biotechnology, and biochemistry, 65(8), 1782-1788 (2001-10-02)
Microorganisms that are capable of (S)-enantioselective transamination of chiral amines were isolated from soil samples by selective enrichment using (S)-alpha-methyl-benzylamine ((S)-alpha-MBA) as a sole nitrogen source. Among them, Klebsiella pneumoniae JS2F, Bacillus thuringiensis JS64, and Vibrio fluvialis JS17 showed good
K Yonaha et al.
The Journal of biological chemistry, 267(18), 12506-12510 (1992-06-25)
The complete amino acid sequence of bacterial omega-amino acid:pyruvate aminotransferase (omega-APT) was determined from its primary structure. The enzyme protein was fragmented by CNBr cleavage, trypsin, and Staphylococcus aureus V8 digestions. The peptides were purified and sequenced by Edman degradation.

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