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Information on EC - arsenate reductase (thioredoxin)

for references in articles please use BRENDA:EC1.20.4.4
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IUBMB Comments
The enzyme, characterized in bacteria of the Firmicutes phylum, is specific for thioredoxin . It has no activity with glutaredoxin [cf. EC, arsenate reductase (glutaredoxin)]. Although the arsenite formed is more toxic than arsenate, it can be extruded from some bacteria by EC, arsenite-transporting ATPase; in other organisms, arsenite can be methylated by EC, arsenite methyltransferase, in a pathway that produces non-toxic organoarsenical compounds. The enzyme also has the activity of EC, protein-tyrosine-phosphatase .
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The expected taxonomic range for this enzyme is: Bacteria, Eukaryota
ARS, ArsC, ArsC1, ArsC1', ArsC3, arsenate reductase, Bs_ArsC, pI258 arsenate reductase, plasmid pI258 arsenate reductase, Sa_ArsC, more
arsenate + thioredoxin = arsenite + thioredoxin disulfide + H2O
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