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A8656 Sigma

Alcohol Dehydrogenase from Saccharomyces cerevisiae

Synonym: ADH, Alcohol Dehydrogenase from yeast, Alcohol:NAD+ oxidoreductase

Properties

Related Categories 1.1.x.x Acting on hydroxyl groups, 1.x.x.x Oxidoreductases, Biochemicals and Reagents, Enzyme Class Index, Enzymes, Inhibitors, and Substrates More...
mol wt   mol wt ~150,000
packaging   vial of 25 mg
storage temp.   −20°C

Description

Application

Alcohol Dehydrogenase from Saccharomyces cerevisiae is used for gel filtration chromatography and as a gel filtration molecular weight marker. It has been used in bioelectrochemical research to investigate the use of diamond nanoparticles as a surface for protein loading.

Biochem/physiol Actions

A 141 kDa 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)

Price and Availability


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