Evolution, expression, and substrate specificities of aldehyde oxidase enzymes in eukaryotes
نویسندگان
چکیده
منابع مشابه
Direct comparison of the four aldehyde oxidase enzymes present in mouse gives insight into their substrate specificities
Mammalian aldehyde oxidases (AOXs) are molybdo-flavoenzymes which are present in many tissues in various mammalian species, including humans and rodents. Different species contain a different number of AOX isoforms. In particular, the reasons why mammals other than humans express a multiplicity of tissue-specific AOX enzymes is unknown. In mouse, the isoforms mAOX1, mAOX3, mAOX4 and mAOX2 are p...
متن کاملThe four aldehyde oxidases of Drosophila melanogaster have different gene expression patterns and enzyme substrate specificities.
In the genome of Drosophila melanogaster, four genes coding for aldehyde oxidases (AOX1-4) were identified on chromosome 3. Phylogenetic analysis showed that the AOX gene cluster evolved via independent duplication events in the vertebrate and invertebrate lineages. The functional role and the substrate specificity of the distinct Drosophila AOX enzymes is unknown. Two loss-of-function mutant a...
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The substrate specificity of aspartate aminotransferase was successfully modified by directed molecular evolution using a combination of DNA shuffling and selection in an auxotrophic Escherichia coli strain. After five rounds of selection, one of the evolved mutants showed a 10(5)-fold increase in the catalytic efficiency (kcat/Km) for beta-branched amino and 2-oxo acids and a 30-fold decrease ...
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Background Any factor like diabetes that changes the oxidant/antioxidant balance in favor of oxidants could possibly disrupt the physiologic function of ovaries. So, we have investigated the effect of vitamin E and Se supplements on antioxidant defense in ovaries of diabetic rats with focus on Xanthine dehydrogenase/oxidase (XDH/XO) and Aldehyde oxidase (AO) activities. MaterialsAndMethods This...
متن کاملHepatic Aldehyde Oxidase
Previous reports on rabbit liver aldehyde oxidase described the purification and some properties of the enzyme (1) and the differential inhibition of electron transfer to various acceptors (2). The latter study furnished evidence for the participation of several electron carriers in the internal electron transport sequence of the enzyme. The present communication summarizes the results of studi...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 2020
ISSN: 0021-9258
DOI: 10.1074/jbc.rev119.007741