Gating mechanisms for biological electron transfer: Integrating structure with biophysics reveals the nature of redox control in cytochrome P450 reductase and copper-dependent nitrite reductaseNicole G.H. Leferink; Christopher R. Pudney; Sibylle Brenner; Derren J. Heyes; Robert R. Eady; S. Samar Hasnain; Sam Hay; Stephen E.J. Rigby; Nigel S. Scrutton · 2012