ID   1.14.99.52
DE   L-cysteinyl-L-histidinylsulfoxide synthase.
CA   L-histidine + L-cysteine + O(2) = S-(L-histidin-5-yl)-L-cysteine S-oxide
CA   + H(2)O.
CF   Fe(2+).
CC   -!- The enzyme participates in ovothiol biosynthesis.
CC   -!- It also has some activity as EC 1.13.11.20, and can perform the
CC       reaction of EC 1.14.99.50.
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