There are two general methods for the formation of peptide bond, i. e. amino activation or carboxylic group activation.

形成肽键的基本方法，可以活化氨基也可以活化羧基，但是迄今为止普遍使用的都是活化羧基的方法。

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Meanwhile, Targacept, a firm based in Winston-Salem, North Carolina, is looking at another group of nerve-cell proteins, the nicotinergic receptors, whose activation has been shown to increase alertness and may fend off cognitive decline.

ECONOMIST: The ethics of brain science

This design will permit the DDR4 memory devices to have separate activation, read, write or refresh operations underway in each unique bank group.

ENGADGET: JEDEC announces final DDR4 RAM specification