A novel type of glutathione S-transferase in Onchocerca volvulus

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A novel type of glutathione S-transferase in Onchocerca volvulus.

Onchocerca volvulus is a pathogenic human filarial parasite which, like other helminth parasites, is capable of evading the host's immune responses by a variety of defense mechanisms which are likely to include the detoxification and repair mechanisms of the enzyme glutathione S-transferase (GST). In this study, we show that one of the previously described GSTs from O. volvulus appears to posse...

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Crystallization of the major cytosolic glutathione S-transferase from Onchocerca volvulus.

Glutathione S-transferases (GSTs) are a family of detoxification enzymes that catalyse the conjugation of glutathione to xenobiotic and endogenous electrophilic compounds, thus facilitating their elimination from cells. The recombinant Onchocerca volvulus GST2 has been expressed in Escherichia coli, purified and crystallized by the hanging-drop vapour-diffusion technique. Two different crystal ...

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Molecular characterization and expression of Onchocerca volvulus glutathione reductase.

Glutathione metabolism represents a potential target for anti-parasite drug design. The central role of glutathione reductase (GR) in maintenance of the thiol redox state and in anti-oxidative defence has to be evaluated in more detail in order to establish the essential function of this enzyme for the survival of the filarial parasite Onchocerca volvulus. The O. volvulus GR (OvGR) gene was clo...

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Structural analysis and antibody response to the extracellular glutathione S-transferases from Onchocerca volvulus.

Onchocerca volvulus is a human pathogenic filarial parasite which, like other parasitic nematodes, is capable of surviving in an immunologically competent host by employing a variety of immune evasion strategies and defense mechanisms including the detoxification and repair mechanisms of the glutathione S-transferases (GSTs). In this study we analyzed the glycosylation pattern and the immunolog...

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A novel trans-spliced mRNA from Onchocerca volvulus encodes a functional S-adenosylmethionine decarboxylase.

Complete cDNA and genomic sequences encoding the Onchocerca volvulus S-adenosylmethionine decarboxylase (SAMDC), a key enzyme in polyamine biosynthesis, have been isolated and characterized. The deduced amino acid sequence encodes a 42 kDa proenzyme with a moderate level of sequence homology to eukaryotic SAMDCs. Enzymically active O. volvulus SAMDC was expressed at a high level in an Escherich...

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ژورنال

عنوان ژورنال: Infection and Immunity

سال: 1994

ISSN: 0019-9567,1098-5522

DOI: 10.1128/iai.62.11.4762-4767.1994