ISDA: 1RNA

Deposition Date 1990-02-01

Release Date 1991-04-15

Last Version Date 2024-02-14

Entry Detail

PDB ID:

1RNA

Keywords:

RNA

Title:

CRYSTALLOGRAPHIC STRUCTURE OF AN RNA HELIX: [U(U-A)6A]2

Biological Source:

Source Organism:

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.25 Å

R-Value Observed:

0.13

Space Group:

P 21 21 21

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Macromolecular Entities

Polymer Type:polyribonucleotide
Molecule:RNA (5'-R(*UP*UP*AP*UP*AP*UP*AP*UP*AP*UP*AP*UP*AP*A)-3')
Chain IDs:A, B
Chain Length:14
Number of Molecules:2
Biological Source:

Primary Citation

Crystallographic structure of an RNA helix: [U(UA)6A]2.

Dock-Bregeon, A.C, Chevrier, B, Podjarny, A, Johnson, J, de Bear, J.S, Gough, G.R, Gilham, P.T, Moras, D, Dock-Bregeon, A.C, Chevier, B, Podjarny, A, Moras, D, De Bear, J.S, Gough, G.R, Gilham, P.T, Johnson, J.E.Show

J.Mol.Biol. 209 459 474 (1989)

PMID: 2479753 DOI: 10.1016/0022-2836(89)90010-7

Abstact

The crystallographic structure of the synthetic oligoribonucleotide, U(UA)6A, has been solved at 2.25 A resolution. The crystallographic refinement permitted the identification of 91 solvent molecules, with a final agreement factor of 13%. The molecule is a dimer of 14 base-pairs and shows the typical features of an A-type helix. However, the presence of two kinks causes a divergence from a straight helix. The observed deformation, which is stabilized by a few hydrogen bonds in the crystal packing, could be due to the relatively high (35 degrees C) temperature of crystallization. The complete analysis of the structure is presented. It includes the stacking geometries, the backbone conformation and the solvation.

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Primary Citation of related structures

Abstact

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