RNA RNA AND RNA PROTEIN INTERACTIONS IN 30-S RIBOSOMAL-SUBUNITS - ASSOCIATION OF 16-S RIBOSOMAL-RNA FRAGMENTS IN THE PRESENCE OF RIBOSOMAL-PROTEINSстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The E. coli 16 S rRNA with single-site breaks centered at position 777 or 785 was obtained by RNase H site-specific cleavage of rRNA. Spontaneous dissociation of the cleaved 16 S rRNA into fragments occurred under 'native' conditions. The reassociation of the 16 S rRNA fragments was possible only in the presence of ribosomal proteins. The combination of S4 and S16(S17) ribosomal proteins interacting mainly with the 5'-end domain of 16 S rRNA was sufficient for reassociation of the fragments. The 30 S subunits with fragmented RNA at ca. 777 region retained some poly(U)-directed protein synthetic activity.