Protein Structure from Scientific Research

Magnified views of the transthiolation site (T-site) with overlaid electron microscopy densities and model for doubly loaded E1 state 1 ( f ) and state 10 ( g ), centred on the cyanomethyldithioacetal mimic of the E1Ub(T)E2 tetrahedral intermediate. Isosurface levels contoured at 0.5 ( b ), 0.63 ( c , d ), 0.54 ( f ) and 0.60 ( g ).

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