isoelectric points

例句：

1. 1. The isoelectric points of the two proteins are different.
   两种蛋白质的等电点不同。
2. 2. Theisoelectric points of the two proteins aredifferent, which affects their interactions.
   两种蛋白质的等电点不同，这影响了它们的相互作用。
3. 3. Theisoelectric points of the twoproteins are different, which affects theirinteractions.
   两种蛋白质的等电点不同，这影响了它们的相互作用。