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A'-form RNA double helix in the single crystal structure of r(UGAGCUUCGGCUC).

ABSTRACT: Here we demonstrate the presence of the A'-RNA conformation using the single crystal structure of a tridecamer: r(UGAGCUUCGGCUC). The average A'-RNA conformation deduced from X-ray fiber diffraction data had only been available previously, but now the presence of the A'-RNA conformation has been found in a single crystal structure for the first time. Statistical analysis showed that the A'-RNA conformation is distinguishable from the A-RNA conformation in a plot of the major groove width against the base pair inclination angle. The major groove of the A'-RNA conformation is wide enough to accommodate a protein or peptide while that of the A-RNA conformation is too narrow to do so. The presence of the A'-RNA conformation is significant for protein-RNA interaction.

SUBMITTER: Tanaka Y

PROVIDER: S-EPMC148272 | biostudies-other | 1999 Feb

REPOSITORIES: biostudies-other

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A'-form RNA double helix in the single crystal structure of r(UGAGCUUCGGCUC).

Tanaka Y Y Fujii S S Hiroaki H H Sakata T T Tanaka T T Uesugi S S Tomita K K Kyogoku Y Y

Nucleic acids research 19990201 4

Here we demonstrate the presence of the A'-RNA conformation using the single crystal structure of a tridecamer: r(UGAGCUUCGGCUC). The average A'-RNA conformation deduced from X-ray fiber diffraction data had only been available previously, but now the presence of the A'-RNA conformation has been found in a single crystal structure for the first time. Statistical analysis showed that the A'-RNA conformation is distinguishable from the A-RNA conformation in a plot of the major groove width against ...[more]

PMID: 9927725

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