Methionine-S-oxide reductase
Template:Infobox enzyme Methionine-S-oxide reductase (Template:EC number, methyl sulfoxide reductase I and II, acetylmethionine sulfoxide reductase, methionine sulfoxide reductase, L-methionine:oxidized-thioredoxin S-oxidoreductase) is an enzyme with systematic name L-methionine:thioredoxin-disulfide S-oxidoreductase.[1][2][3] This enzyme catalyses the following chemical reaction
- L-methionine + thioredoxin disulfide + H2O L-methionine S-oxide + thioredoxin
In the reverse reaction, dithiothreitol can replace reduced thioredoxin.
S-Methionine-S-oxide and R-Methionine-S-oxide require different Methionine-S-oxide reductases, named Methionine-S-oxide reductase A and Methionine-S-oxide reductase B respectively.[4] A Methionine-S-oxide reductase B named AtMSRB plays a large role in salt tolerance in Arabidopsis Thaliana.[5]
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Template:Sulfur oxidoreductases Template:Enzymes Template:Portal bar