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  • Title: Two RNA species co-purify with RNase P from the fission yeast Schizosaccharomyces pombe.
    Author: Krupp G, Cherayil B, Frendewey D, Nishikawa S, Söll D.
    Journal: EMBO J; 1986 Jul; 5(7):1697-703. PubMed ID: 3743551.
    Abstract:
    RNase P activity from Schizosaccharomyces pombe co-purifies with two RNA species. These RNAs are associated with enzyme activity as judged by titrated micrococcal nuclease inactivation experiments. The two RNAs, K1- and K2-RNA, are 285 and 270 nucleotides long, respectively. Both RNAs are transcribed from one gene, present in a single copy in the haploid genome. The primary and a secondary structure of K RNAs have been determined and compared with M1 RNA, their counterpart from Escherichia coli. Very limited sequence homology was observed, and this agrees with the finding that no cross-hybridization with M1 RNA can be detected in a Southern analysis with yeast genomic DNA. However, the secondary structures of K RNA and M1 RNA show the same basic organization and one conserved local motif, the sequence GUG--AGGPu in an exposed hairpin loop.
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