As one form of RNAi, short hairpin RNA ( shRNA) is composed of both sense and antisense sequences with a few bases ( 19-21nt) which are reverse repeat sequences named as loop between them. 短发夹状RNA(ShorthairpinRNA,shRNA)由短的正义链、反义链(19-21nt)和连接它们的数个碱基组成,正义链、反义链呈反向重复序列,因其形似发夹而得名。
The function of RNA is not decided by the sequence but of the structure. The types of RNA structure include hairpin, loop, pseudoknot, and so on. RNA的功能主要由其结构来决定,其结构类型主要包括茎环结构、发夹结构和假结结构等。