Evidence for a new sub-class of methionine sulfoxide reductases B with an alternative thioredoxin recognition signature.

Abstract excerpt

Methionine sulfoxide reductases catalyze the reduction of protein-bound methionine sulfoxide back to methionine via a thioredoxin-recycling process. Two classes of methionine sulfoxide reductases, called MsrA and MsrB, exist that display opposite stereoselectivities toward the sulfoxide function. Although they are structurally unrelated, they share a similar chemical mechanism that includes three steps with 1)...

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