1.14.20.3 | Fe2+ |
Fe(II)-dependent oxygenase. An Fe(IV)-oxo intermediate abstracts the hydrogen (H*) from C5, and tyrosine 165, a residue not visualized in the published structures of CarC lacking bound substrate, donates H* to the opposite face of the resultant radical. The reaction oxidizes the Fe(II) cofactor to Fe(III), limiting wild-type CarC to one turnover, but substitution of the H-donating tyrosine disables stereoinversion and confers to CarC the capacity for catalytic substrate oxidation |
746493 |