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Pan RNA motif : ウィキペディア英語版 | Pan RNA motif
The ''pan'' RNA motif defines a conserved RNA structure that was identified using bioinformatics. ''pan'' motif RNAs are present in three phyla: Chloroflexi, Firmicutes and Proteobacteria, although within the latter phylum they are only known in deltaproteobacteria. A ''pan'' RNA is present in the Firmicute ''Bacillus subtilis'', which is one of the most extensively studied bacteria. ''pan'' RNAs appear to be located in the 5' untranslated regions of genes that encode enzymes involved in the synthesis of the vitamine pantothenate. Thus it was proposed that the ''pan'' RNA motif represents a cis-regulatory element acting at the RNA level to regulate pantothenate synthesis. The primary structural feature of ''pan'' RNAs is that they have one or two stem-loops that have two bulged adenosines. Their relatively simple structure and lack of numerous conserved nucleotides is less typical of a riboswitch, and they were proposed to bind a protein. ==References== 〔
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