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Selected side chain interactions within the E6AP Hect domain trimer. A, structure of the E6AP Hect domain trimer portrayed in Fig. 4B illustrating additional residues stabilizing the structure. B and C, close-up views of the spatial orientation for Tyr533, Asp543, and Arg626. Subunit residues are color-coded like those in A. Residues in parentheses are those previously examined by Chan et al. (76).
