A7653
L-Alanine Dehydrogenase from Bacillus subtilis
buffered aqueous glycerol solution, ~30 units/mg protein (Lowry)
别名:
L-Alanine: NAD+ oxidoreductase (deaminating)
应用
L-Alanine dehydrogenase converts L-alanine to pyruvate and ammonium. L-Alanine dehydrogenase from Bacillus subtilis may be used to study enzyme inactivation and protection .
生化/生理作用
L-Alanine dehydrogenase is an A-stereospecific dehydrogenase that catalyzes the reversible deamination of L-alanine to pyruvate and ammonium. It is important for the generation of pyruvate during sporulation. L-Alanine dehydrogenase from Bacillus subtilis has a predominately ordered kinetic mechanism in which NAD binds before L-alanine. Subsequently, ammonia, pyruvate, and NADH are released in that specific order. Optimal pH for the amination reaction is 8.8-9.0, whereas it is 10-10.5 for the deamination reaction. The enzyme is inactivated by divalent metal ions and p-chloromercuribenzoate, mercuric ion being most effective. The inactivation may be reversed by L- or D-cysteine.
外形
Solution in 50% glycerol containing 10 mM potassium phosphate buffer, pH 7.7
其他说明
One unit will convert 1.0 μmole of L-alanine to pyruvate and NH3 per min at pH 10.0 at 25 °C.
警示用语：
Danger
危险声明
预防措施声明
危险分类
Resp. Sens. 1
储存分类代码
10 - Combustible liquids
WGK
WGK 3
个人防护装备
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
法规信息
常规特殊物品
此项目有
D Delforge et al.
The Journal of biological chemistry, 272(4), 2276-2284 (1997-01-24)
L-Alanine dehydrogenase from Bacillus subtilis was inactivated with two different lysine-directed chemical reagents, i.e. 2,4, 6-trinitrobenzenesulfonic acid and N-succinimidyl 3-(2-pyridyldithio)propionate. In both cases, the inactivation followed pseudo first-order kinetics, with a 1:1 stoichiometric ratio between the reagent and the enzyme
Hexigeduleng Bao et al.
Plant, cell & environment, 38(3), 600-613 (2014-07-31)
γ-Aminobutyric acid (GABA) accumulates in many plant species in response to environmental stress. However, the physiological function of GABA or its metabolic pathway (GABA shunt) in plants remains largely unclear. Here, the genes, including glutamate decarboxylases (SlGADs), GABA transaminases (SlGABA-Ts) and
Crystal structures of the Mycobacterium tuberculosis secretory antigen alanine dehydrogenase (Rv2780) in apo and ternary complex forms captures "open" and "closed" enzyme conformations.
Sarvind Mani Tripathi et al.
Proteins, 72(3), 1089-1095 (2008-05-21)
Wei Ye et al.
Microbiological research, 165(4), 268-275 (2009-09-02)
The major objective of the present study is to change the alanine production of Lactic acid bacteria by expression of Bacillus subtilis (natto) alanine dehydrogenase (AlaDH), the gene that is not present in Lactic acid. B. subtilis AlaDH gene (ald)
Karin Denger et al.
Microbiology (Reading, England), 152(Pt 11), 3197-3206 (2006-11-01)
A degradative pathway for taurine (2-aminoethanesulfonate) in Rhodobacter sphaeroides 2.4.1 was proposed by Brüggemann et al. (2004) (Microbiology 150, 805-816) on the basis of a partial genome sequence. In the present study, R. sphaeroides 2.4.1 was found to grow exponentially
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