在DNA被包装到头壳内后，该马达脱落，病毒尾连接到头壳上。
After the DNA is inside the capsid, the motor falls off, and a virus tail attaches to the capsid.
研究人员发现，这一马达位于头壳和尾巴的交界处，是由列环状排列的gp17蛋白组成的。
The researchers found that the motor is located at the intersection of the capsid and the virus "tail" and is made of a circular array of proteins called gene product 17 (gp17).
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