1.2.7.B2 | formaldehyde + H2O + 2 oxidized ferredoxin = formate + 2 H+ + 2 reduced ferredoxin |
a mechanism is proposed in which the formaldehyde substrate binds directly to the tungsten ion. W(VI)=O then performs a nucleophilic attack on the formaldehyde carbon to form a tetrahedral intermediate. In the second step, which is calculated to be rate limiting, a proton is transferred to the second-shell Glu308 residue, coupled with a two-electron reduction of the tungsten ion |
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