Selection of Shine-Dalgarno sequences in plastids

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Selection of Shine-Dalgarno sequences in plastids

Like bacterial genes, most plastid (chloroplast) genes are arranged in operons and transcribed as polycistronic mRNAs. Plastid protein biosynthesis occurs on bacterial-type 70S ribosomes and translation initiation of many (but not all) mRNAs is mediated by Shine-Dalgarno (SD) sequences. To study the mechanisms of SD sequence recognition, we have analyzed translation initiation from mRNAs contai...

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Listeria Monocytogenes La111 and Klebsiella Pneumoniae KCTC 2242: Shine-Dalgarno Sequences

Listeria monocytogenes can cause serious infection and recently, relapse of listeriosis has been reported in leukemia and colorectal cancer, and the patients with Klebsiella pneumoniae are at increased risk of colorectal cancer. Translation initiation codon recognition is basically mediated by Shine-Dalgarno (SD) and the anti-SD sequences at the small ribosomal RNA (ssu rRNA). In this research,...

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Depletion of Shine-Dalgarno Sequences Within Bacterial Coding Regions Is Expression Dependent

Efficient and accurate protein synthesis is crucial for organismal survival in competitive environments. Translation efficiency-the number of proteins translated from a single mRNA in a given time period-is the combined result of differential translation initiation, elongation, and termination rates. Previous research identified the Shine-Dalgarno (SD) sequence as a modulator of translation ini...

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Functional Shine-Dalgarno-like sequences for translational initiation of chloroplast mRNAs.

Many of the chloroplast mRNAs possess Shine-Dalgarno (SD)-like sequences (typically GGAGG) in the 5'-untranslated regions, but the position is highly variable. Using a homologous in vitro translation system, we assessed the role for translation of SD-like sequences in four tobacco chloroplast mRNAs. The rbcL mRNA has a typical SD-like sequence at a position similar to the conserved position (-1...

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The Frequency of Internal Shine–Dalgarno-like Motifs in Prokaryotes

In prokaryotes, translation initiation typically depends on complementary binding between a G-rich Shine-Dalgarno (SD) motif in the 5' untranslated region of mRNAs, and the 3' tail of the 16S ribosomal RNA (the anti-SD sequence). In some cases, internal SD-like motifs in the coding region generate "programmed" ribosomal pauses that are beneficial for protein folding or accurate targeting. On th...

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ژورنال

عنوان ژورنال: Nucleic Acids Research

سال: 2010

ISSN: 1362-4962,0305-1048

DOI: 10.1093/nar/gkq978