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Stereoview showing the steric hindrance between a potentially bound Fab E16 and a neighboring E molecule close to the icosahedral fivefold axis. Part of the Cα backbone of one DIII-A is shown in dark blue with the E16 epitope in green and the corresponding bound Fab molecule in magenta. A severe clash can be observed between the Fab and a symmetry-related DIII-A (blue), verifying that E16 cannot bind to any of the DIII-As.
