What is dehydrogenase activity?

Dehydrogenase activity (DHA) is one of the most adequate, impor- tant and one of the most sensitive bioindicators, relating to soil fertility (Wolinska and Stepniewska 2012). Its activity depends from the same factors, which influence on microorganisms abundance and activity.

What is the difference between dehydrogenase and oxidase?

Oxidases are enzymes involved when molecular oxygen acts as an acceptor of hydrogen or electrons. Whereas, dehydrogenases are enzymes that oxidize a substrate by transferring hydrogen to an acceptor that is either NAD+/NADP+ or a flavin enzyme.

What does dehydrogenase do in glycolysis?

The enzyme glyceraldehyde-3-phosphate dehydrogenase (GAPDH) is an essential component of the glycolytic pathway and converts glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate.

Why do we determine dehydrogenase activity in soil?

Determination of DHA in the soil samples gives us large amount of information about biological characteristic of the soil. It was confirmed that although oxygen and other electron acceptors can be utilized by dehydrogenases, most of the enzyme is produced by anaerobic microorganisms.

What kind of enzyme is dehydrogenase?

Dehydrogenases are a group of biological catalysts (enzymes) that mediate in biochemical reactions removing hydrogen atoms [H] instead of oxygen [O] in its oxido-reduction reactions. It is a versatile enzyme in the respiratory chain pathway or the electron transfer chain.

What types of reactions are catalyzed by dehydrogenase enzymes?

Dehydrogenases catalyze the oxidation-reduction reaction with the help coenzyme such as NAD+/NADP+ or flavin such as FAD, FMN as an electron acceptor. Alcohol dehydrogenase catalyzes the conversion of alcohol to aldehyde/ketone with the reduction of NAD(P)+ to NAD(P)H (Pelmont et al., 1989).

What are the types of dehydrogenase?


  • Glycerol.
  • Hydrogen.
  • Biosensors.
  • Butanol.
  • Protein.
  • Formate.
  • Hydrogenase.
  • Cerevisiae.

Is dehydrogenase an oxidation-reduction enzyme?

Dehydrogenases are intracellular enzymes that catalyze oxidation–reduction reactions required for the respiration of organic compounds.

What does dehydrogenase break down?

The enzyme alcohol dehydrogenase (ADH) metabolizes the ethanol (that’s the type of alcohol in alcohol) into toxic acetaldehyde. From there the liver enzyme aldehyde dehydrogenase (ALDH) metabolizes acetaldehyde into acetate, a less toxic compound that breaks down into water and carbon dioxide.

Does dehydrogenase oxidize or reduce glucose?

GDH catalyzes the oxidation of glucose in the presence of cofactors like nicotinamide adenine dinucleotide (NAD), FAD, or pyrroloquinoline quinone (PQQ).