信号肽(signal peptide)
常指新合成多肽链中用于指导蛋白质跨膜转移(定位)的N-末端的氨基酸序列(有时不一定在N端)。
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
免费的网站请分享给朋友吧