Abstract:
:The mitochondrial amidoxime-reducing component (mARC) is a recently discovered molybdenum-containing enzyme in mammalians. Upon reconstitution with the electron transport proteins, cytochrome b(5) and its reductase, this molybdenum enzyme is capable of reducing N-hydroxylated compounds. It was named mARC because the N-reduction of amidoxime structures was initially studied using this isolated mitochondrial enzyme. All hitherto analyzed mammalian genomes harbor two mARC genes: molybdenum cofactor (Moco) sulferase C-terminal domain MOSC1 and MOSC2. Proteins encoded by these genes represent the simplest eukaryotic molybdenum enzymes, in that they bind only the Moco. It is also suggested that they are members of a new family of molybdenum enzymes. mARC and its N-reductive enzyme system plays a major role in drug metabolism, especially in the activation of so-called "amidoxime-prodrugs" and in the detoxification of N-hydroxylated xenobiotics, though its physiological relevance is largely unknown.
journal_name
Drug Metab Revjournal_title
Drug metabolism reviewsauthors
Havemeyer A,Lang J,Clement Bdoi
10.3109/03602532.2011.608682subject
Has Abstractpub_date
2011-11-01 00:00:00pages
524-39issue
4eissn
0360-2532issn
1097-9883journal_volume
43pub_type
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