NADH dehydrogenases have been isolated in a low-molecular weight form (56,500) from both low-iron and normal-iron grown cells of Azotobacter vinelandii. Unlike low-molecular weight forms of NADH dehydrogenases reported from mammalian mitchondria, the enzymes in this study have not undergone any unusual alterations in various reactivities with substrates and electron acceptors. The NADH dehydrog...

The gene for the catabolic NAD-linked glutamate dehydrogenase of Peptostreptococcus asaccharolyticus was cloned by selection of Escherichia coli for complementation of a biosynthetic defect. Cloned fragments containing the gene and the P. asaccharolyticus transcription and translation signals are very highly expressed in E. coli. The nucleotide sequence of the cloned gene was determined. It cod...

Pseudomonas putida KT2440 exhibits redundant formaldehyde dehydrogenases and formate dehydrogenases that contribute to the detoxification of formaldehyde, a highly toxic compound. Physical and transcriptional analyses showed that the open reading frame (ORF) PP0328, encoding one of the formaldehyde dehydrogenases, is self-sufficient, whereas the other functional formaldehyde dehydrogenase gene ...

Accurate protein function prediction is an important subject in bioinformatics, especially wheresequentially and structurally similar proteins have different functions. Malate dehydrogenaseand L-lactate dehydrogenase are two evolutionary related enzymes, which exist in a widevariety of organisms. These enzymes are sequentially and structurally similar and sharecommon active site residues, spati...

The nucleotide sequences of xylB and xylC from Acinetobacter calcoaceticus, the genes encoding benzyl alcohol dehydrogenase and benzaldehyde dehydrogenase II, were determined. The complete nucleotide sequence indicates that these two genes form part of an operon and this was supported by heterologous expression and physiological studies. Benzaldehyde dehydrogenase II is a 51654 Da protein with ...

The majority of the dehydrogenases of mammalian mitochondria are linked to the respiratory chain (cytochrome system) by way of pyridine nucleotides. Although the intramitochondrial pyridine nucleotide appears to be tightly bound in intact mitochondrial preparations (1) and thus does not function as a mobile coenzyme, the requirement of these dehydrogenases for added diphosphopyridine nucleotide...

Sex steroid hormones such as estrogens and androgens are involved in the development and differentiation of the breast tissue. The activity and concentration of sex steroids is determined by the availability from the circulation, and on local conversion. This conversion is primarily mediated by aromatase, steroid sulfatase, and 17β-hydroxysteroid dehydrogenases. In postmenopausal women, this is...

This article reports on a novel biocatalytic method for the synthesis of both enantiomers lisofylline based Trametes versicolor laccase, TEMPO as redox mediator and stereocomplementary recombinant alcohol dehydrogenases biocatalysts.