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illustration of the Phi29 DNA packaging motor. The motor mainly consists of three coaxial parts: the connector (portal protein), the pRNA hexameric ring, and the ATPase gp16. Gp16 are assembled into the motor complex bridged by pRNA. (A) The revolving mechanism of the motor ATPase gp16 to translocate dsDNA. (B) Side view of the phi29 packaging motor. (C) Top view (right) and bottom view (left) of the motor complex showing the hexameric pRNA ring and the connector channel.
