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ARF7 PB1 domains formed an extended directional pentamer within the crystal. (A) The ARF7PB1 crystal contains an oriented ARF7PB1 domain pentamer of chains A, B, L, O, and P. (B) Stereo view of ARF7PB1 pentamer topology suggests formation of a curved helix multimer. The N-terminal residue of each chain is shown as a space-filling model.
