A8656
Alcohol Dehydrogenase from Saccharomyces cerevisiae
Sinônimo(s):
ADH, Alcohol Dehydrogenase from yeast, Alcohol:NAD+ oxidoreductase
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About This Item
Produtos recomendados
fonte biológica
Saccharomyces cerevisiae
Nível de qualidade
forma
powder
peso molecular
~150,000
embalagem
vial of 25 mg
temperatura de armazenamento
−20°C
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Aplicação
Alcohol Dehydrogenase from Saccharomyces cerevisiae has been used as a gel filtration molecular weight marker/ It has also been used as a component of nine protein mixture for mass spectroscopy analysis.
Ações bioquímicas/fisiológicas
ADH (alcohol dehydrogenase) is one of the first enzymes to be isolated and purified. NAD+ is its coenzyme. Three isozymes of yeast ADH, that is, yeast alcohol dehydrogenase-1, 2 and 3 (YADH-1, -2, -3) have been identified. YADH-1 is expressed during anaerobic fermentation, YADH-2 is expressed in the cytoplasm and YADH-3 is localized to the mitochondria. A 141kDa tetramer containing 4 equal subunits. The active site of each subunit contains a zinc atom. Each active site also contains 2 reactive sulfhydryl groups and a histidine residue.
Isoelectric point: 5.4-5.8
Optimal pH: 8.6-9.0
Substrates: Yeast ADH is most active with ethanol and its activity decreases as the size of the alcohol increases or decreases. Branched chain alcohols and secondary alcohols also have very low activity.
KM (ethanol) = 2.1 × 10-2 M
KM (methanol = 1.3 × 10-1 M
KM (isopropanol) = 1.4 × 10-1 M
Inhibitors: Compounds that react with free sulfhydryls, including N-alkylmaleimides and iodoacetamide.
Zinc chelator inhibitors, including 1,10-phenanthroline,
8-hydroxyquinoline, 2,2′-dipyridyl, and thiourea.
Substrate analogue inhibitors, including β-NAD analogs, purine and pyrimidine derivatives, chloroethanol, and fluoroethanol.
Extinction Coefficient: E1% = 14.6 (water, 280 nm)
Isoelectric point: 5.4-5.8
Optimal pH: 8.6-9.0
Substrates: Yeast ADH is most active with ethanol and its activity decreases as the size of the alcohol increases or decreases. Branched chain alcohols and secondary alcohols also have very low activity.
KM (ethanol) = 2.1 × 10-2 M
KM (methanol = 1.3 × 10-1 M
KM (isopropanol) = 1.4 × 10-1 M
Inhibitors: Compounds that react with free sulfhydryls, including N-alkylmaleimides and iodoacetamide.
Zinc chelator inhibitors, including 1,10-phenanthroline,
8-hydroxyquinoline, 2,2′-dipyridyl, and thiourea.
Substrate analogue inhibitors, including β-NAD analogs, purine and pyrimidine derivatives, chloroethanol, and fluoroethanol.
Extinction Coefficient: E1% = 14.6 (water, 280 nm)
Alcohol Dehydrogenase (ADH) is an oxidoreductase and also a pyridine nucleotide-dependent dehydrogenase. It catalyzes the generation of aldehydes or ketones by reversible oxidation of alcohols. ADH in parallel also mediates the reduction of the nicotinamide adenine dinucleotide (NAD+) or nicotinamide adenine dinucleotide phosphate (NADP+). ADH from yeast is more active than mammalian ADHs.
Palavra indicadora
Danger
Frases de perigo
Declarações de precaução
Classificações de perigo
Resp. Sens. 1
Código de classe de armazenamento
11 - Combustible Solids
Classe de risco de água (WGK)
WGK 1
Ponto de fulgor (°F)
Not applicable
Ponto de fulgor (°C)
Not applicable
Equipamento de proteção individual
Eyeshields, Gloves, type N95 (US)
Certificados de análise (COA)
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Protocolos
This procedure may be used for Alcohol Dehydrogenase products.
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