E.coliipA (5)AG C A C G A GGGG A AA U C U G A U G G A A C G C U A C (3) E.coli ara B UUUGGAUGGAGUGAAAC GAU GG C GA UU G CA E.coli lac I CAAU UCA GG G U GG UG AA UG U G AA A C C A G U A X174 phage A proteir加 AAUCUUGGAGGCUUU UUUAU G GUUCGUU C U 入phage cro A U G U ACU AA G G A GG UU G U A U GG A A C AA C G C Shine-Dalgarno sequence; Initiation codon; pairs with 165 rRNA pairs with fMet-tRNAMet (a) 3 OH G Prokaryotic 3'End of A mRNA 16SrRNA U with consensus H组 Shine-Dalgarmo (5')GA UU CC UA GG A GG UU U G A CC U A U G C G A G CUUA G U (3') sequence )