One of the oxygen atoms of Cys42-SO 3 H is hydrogen-bonded both to the His10 imidazole and to Cys42-N. His10 functions in part to stabilize the unusual Cys42-SOH redox center.
One of the oxygen atoms of Cys42-SO 3 H is hydrogen-bonded both to the His10 imidazole and to Cys42-N. His10 functions in part. This was to stabilize the unusual Cys42-SOH redox center.