Primary and secondary structure of U2 snRNA.

Abstract:

:With the improved rapid sequencing techniques, the earlier sequence of U2 RNA of Novikoff hepatoma (Shibata et al, J. Biol. Chem. 250, 3909-3920, 1975) was reanalyzed and modified. The improved sequence of U2 RNA is 188 (or 189) nucleotides long and is in register with a characterized U2 RNA pseudogene (Denison et al, PNAS 78, 810-814, 1981) except for an 11 nucleotide sequence (nucleotides 147-157) which is absent from the pseudogene. From these results, a secondary structure of U2 RNA is proposed which is supported by the preferred cleavage sites with T1-RNase, RNase A and S1 nuclease. Isolated U2 RNA was cleaved by T1-RNase preferentially at positions 64 and 164, whereas U2 RNA in U2-snRNP was cleaved only at position 64, indicating that position 164 is protected in U2-snRNP. As with U1 RNA (Epstein et al, PNAS 78, 1562-1566, 1981) the 5'-end of isolated U2 RNA was not preferentially cleaved by T1-RNase.

journal_name

Nucleic Acids Res

journal_title

Nucleic acids research

authors

Reddy R,Henning D,Epstein P,Busch H

doi

10.1093/nar/9.21.5645

subject

Has Abstract

pub_date

1981-11-11 00:00:00

pages

5645-58

issue

21

eissn

0305-1048

issn

1362-4962

journal_volume

9

pub_type

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