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tmRNA    (CURRENT_SVN)

SO Accession: SO:0000584 (SOWiki)
Definition: A tmRNA liberates a mRNA from a stalled ribosome. To accomplish this part of the tmRNA is used as a reading frame that ends in a translation stop signal. The broken mRNA is replaced in the ribosome by the tmRNA and translation of the tmRNA leads to addition of a proteolysis tag to the incomplete protein enabling recognition by a protease. Recently a number of permuted tmRNAs genes have been found encoded in two parts. TmRNAs have been identified in eubacteria and some chloroplasts but are absent from archeal and Eukaryote nuclear genomes.
Synonyms: 10Sa RNA, ssrA, INSDC_feature:tmRNA
DB Xrefs: URL: http://www.sanger.ac.uk/cgi-bin/Rfam/getacc?RF00023  

Parent: small_regulatory_ncRNA (SO:0000370)

Child: tmRNA_region (SO:0000847)
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Graph image for SO:0000584