Inorganic Chemistry by EPR
Repair of Iron Centers Protein YtfE
ESR and Pulsed ESEEM results show that each iron of the oxo- bridged Fe(II)–Fe(III) diiron core is coordinatively unsaturated with each iron bound to two bridging carboxylates and two terminal histidines in addition to an oxo-bridge.
This result suggests that, in addi- tion to any repair of iron centers (RIC) activity, YtfE acts as an NO-trapping scavenger to promote the NO to N2O transformation under low NO flux, which precedes nitrosative stress.
EPR spectrum of Sn0.96Mn0.04HPO3 obtained at temperature 4.2 K