Occurrence and spacing of ribosome recognition sites in mRNAs of chloroplasts from higher plants |
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Authors: | Michael Ruf Hans Kssel |
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Institution: | Michael Ruf,Hans Kössel |
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Abstract: | A computer-aided search for potential ribosome recognition sequences of mRNAs from tobacco chloroplasts shows that more than 90% of mRNA species contain sequences upstream of the respective initiator codons, which allow base pairing with 3′-terminal sequences of small subunit rRNA. This complementarity in several cases involves 16 S rRNA sequences between the canonical CCUCC sequence and the 3′-terminal stem/loop structure. The distances between potential ribosome recognition sequences and initiator codons can be up to 25 nucleotides which is much greater when compared to the spacing of 7±2 nucleotides observed for the classical Shine-Dalgarno sequences in bacterial mRNAs. |
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Keywords: | Chloroplast Translational initiation Ribosome recognition site |
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