æ ¸ç³ä½æ¯ç»èç»èå å¯ä¸çç»èå¨ï¼å ¶ç»æä¸æåä¸çæ ¸ç»èä¸çæ ¸ç³ä½ç±»ä¼¼ã
åæ ¸ç»èçæ ¸ç³ä½è¾å°ï¼æ²éç³»æ°ä¸º70Sï¼ç¸å¯¹ååè´¨é为2.5MDaï¼ç±50Så30S两个äºåºç»æï¼ èçæ ¸ç»èçæ ¸ç³ä½ä½ç§¯è¾å¤§ï¼æ²éç³»æ°æ¯80Sï¼ç¸å¯¹ååè´¨é为3.9ï½4.5MDaï¼ç±60Så40S两个äºåºç»æãå ¸åçåæ ¸çç©å¤§è æèæ ¸ç³ä½æ¯ç±50S大äºåºå30Så°äºåºç»æçãå¨å®æ´çæ ¸ç³ä½ä¸ï¼rRNA约å 2/3ï¼èç½è´¨çº¦ä¸º1/3ã50S大äºåºå«æ34å¤è½é¾å两ç§RNAååï¼ç¸å¯¹ååè´¨é大çrRNAçæ²éç³»æ°ä¸º23Sï¼ç¸å¯¹ååè´¨éå°çrRNA为5Sã30Så°äºåºå«æ21å¤è½é¾åä¸ä¸ª16SçrRNAåå