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XB-ART-24078
Science 1992 Jan 17;2555042:327-30.
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Cyclic 2',3'-phosphates and nontemplated nucleotides at the 3' end of spliceosomal U6 small nuclear RNA's.

Lund E , Dahlberg JE .


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Spliceosomal U6 small nuclear RNA (U6 RNA) in species as diverse as man, frog, fruitfly, and soybean have at their 3' ends a cyclic 2',3'-phosphate (greater than p) apparently derived from uridylic acid residues that were added post-transcriptionally. The 3' ends of U6 RNA's from various sources may be processed in different ways, or to different extents, depending on the organism or stage of development. The presence of a greater than p terminus on U6 RNA may influence the activity of U6 RNA either directly during splicing or indirectly by ensuring that the RNA has a defined length or proper conformation (or both).

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