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Merck
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重要文件

L5135

Sigma-Aldrich

L-Leucine Dehydrogenase from Bacillus cereus

lyophilized powder, ≥60 units/mg protein

同義詞:

L-Leucine:NAD+ oxidoreductase (deaminating)

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About This Item

CAS號碼:
酶委員會編號:
MDL號碼:
分類程式碼代碼:
12352204
NACRES:
NA.54
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形狀

lyophilized powder

品質等級

比活性

≥60 units/mg protein

分子量

245 kDa

儲存溫度

−20°C

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一般說明

L-Leucine Dehydrogenase is a member of the amino acid dehydrogenase family.[1]

應用

L-Leucine Dehydrogenase from Bacillus cereus has been used to determine the branched-chain amino acids (BCAA) spectrophotometrically in serum samples.[2]

生化/生理作用

Leucine Dehydrogenase is a nicotinamide adenine dinucleotide hydrogen (NADH)-dependent oxidoreductase. It is involved in catalyzing the reductive amination of aliphatic 2-oxo-acids to their respective L-amino acids.[3]

單位定義

One unit will convert 1.0 μmole of L‑leucine to α-ketoisocaproate per min at pH 10.5 at 37 °C.

其他說明

contains lysine

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)


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分析證明 (COA)

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Junping Zhou et al.
Biotechnology journal, 14(3), e1800253-e1800253 (2018-07-28)
Unnatural amino acids (UAAs) play a key role in modern medicinal chemistry such as small molecules and peptide-based drugs with fast-growing markets. Low efficiency for natural enzymes including leucine dehydrogenase (LeuDH, EC1.4.1.9) are one major challenge for UAA production. Here
N Kiba et al.
Journal of chromatography. A, 724(1-2), 355-357 (1996-02-16)
A liquid chromatographic system with a co-immobilized leucine dehydrogenase-NADH oxidase reactor is described for the determination of branched-chain amino acids such as I-leucine, I-isoleucine and I-valine. The enzymes were simultaneously immobilized on tresylate-containing poly(vinyl alcohol) beads. The separation was achieved
T Stoyan et al.
Journal of biotechnology, 54(1), 77-80 (1997-04-04)
The L-leucine dehydrogenase gene from Bacillus cereus (DSM 626) was cloned from a partial genomic library and sequenced. The open reading frame has 1101 bp and codes for a protein of 39.9 kDa. The deduced amino acid sequence of the
T Oikawa et al.
Biochemical and biophysical research communications, 280(4), 1177-1182 (2001-02-13)
X-ray crystallographic studies revealed that various amino acid dehydrogenases fold into two domains in each subunit, a substrate-binding domain and an NAD(P)(+)-binding domain (Baker, P. J., Turnbull, A. P., Sedelnikova, S. E., Stillman, T. J., and Rice, D. W. (1995)
Stéphanie Chevalier et al.
Metabolism: clinical and experimental, 53(3), 388-396 (2004-03-12)
We propose that hyperinsulinemia stimulates protein synthesis when postabsorptive plasma amino acid (AA) concentrations are maintained. During a euglycemic hyperinsulinemic clamp, many AA, notably the branched-chain amino acids (BCAA), decline markedly. Therefore, we tested whether individual plasma AA could be

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