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The article studies the alpha-methylserine aldolase gene from the NBRC15150, NBRC15149 and AJ110406 strains of Variovorax paradoxus that was expressed and cloned in Escherichia coli. It includes an in-depth analysis of the characterization and purification of the recombinant enzyme, as well as a discussion on the issues' implications for biotechnology.

Describes the molecular cloning and sequencing of a DNA fragment from Microbacterium liquefaciens AJ 3912, containing the genes responsible for the conversion of 5-substituted-hydantoins to α-amino acids, in Escherichia coli. Deduced amino acid sequence encoded by the hyuA gene; Expression of the hyuA, hyuH and hyuC genes in E. coli; Relation between the presence of the genes and the detection of hydantoin racemase, hydantoinase and N-carbamoyl α-amino acid amido hydrolase enzymatic activities.

Investigates xylitol production from D-arabitol by the membrane and soluble fractions of Gluconobacter oxydans. Detection of two proteins in the soluble fraction; Ability of the proteins to increase xylitol production; Expression of the cloned genes in Escherichia coli.