6 Some specific proteins bind to the rrNa to form rNP complex TRNA Proteins Subunits Assembled ▲△△ △ 23s 55 12900 bases (120 bases (Total: 31 S1 S2 S3 ●oo Q 11540bas0s Total: 21) 30s L1 L2 L3 △▲ 当 △ 28s:58s △ G (4800 bases-160 bases)(120 bases (Total: 50) S1 S2 S3 2 ● 18s (1900 bases
6、 Some specific proteins bind to the rRNA to form RNP complex
30S亚基的三维结构 CP st A L1
30S 亚基的三维结构
二、 rRNA processing in eukaryotes I, In the nucleolus, rNa polymerase I transcribes the rRNA, which usually exist in tandem repeats containing 100 or more copies of the transcription units 2 Primary transcript 47s, containing ETS external transcribed sequence ITs internal transcribed sequence ETS ITS ETS Pre-I8S Pre-58S Pre-28S
二、rRNA processing in eukaryotes 1、In the nucleolus, RNA polymerase I transcribes the rRNA, which usually exist in tandem repeats containing 100 or more copies of the transcription units . 2、 Primary transcript 47S, containing ETS external transcribed sequence ITS internal transcribed sequence ETS ITS ITS ETS Pre-18S Pre-5.8S Pre-28S