205D

STRUCTURE OF AN RNA DOUBLE HELIX INCLUDING URACIL-URACIL BASE PAIRS IN AN INTERNAL LOOP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.64 Å
  • R-Value Work: 0.197 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of an RNA double helix including uracil-uracil base pairs in an internal loop.

Baeyens, K.J.De Bondt, H.L.Holbrook, S.R.

(1995) Nat.Struct.Mol.Biol. 2: 56-62


  • PubMed Abstract: 
  • The crystal structure of the RNA dodecamer 5'-GGACUUUGGUCC-3' has been determined from X-ray diffraction data to 2.6 A resolution. This oligomer forms an asymmetric double helix in the crystal. Four consecutive non-Watson-Crick base-pairs are formed ...

    The crystal structure of the RNA dodecamer 5'-GGACUUUGGUCC-3' has been determined from X-ray diffraction data to 2.6 A resolution. This oligomer forms an asymmetric double helix in the crystal. Four consecutive non-Watson-Crick base-pairs are formed in the middle of the duplex including the first intrahelical U-U (or T-T) pairs observed in an oligonucleotide crystal structure. Two different conformations of U-U pairs are observed in the context of the surrounding sequence. One of these pairs is highly twisted, allowing a bound water to bridge across strands in the major groove. The crystal packing illustrates a new form of RNA helix-helix interaction.


    Organizational Affiliation

    Structural Biology Division, Lawrence Berkeley Laboratory, University of California, Berkeley 94720.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
RNA (5'-R(*GP*GP*AP*CP*UP*UP*UP*GP*GP*UP*CP*C)-3')A,B12N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.64 Å
  • R-Value Work: 0.197 
  • Space Group: P 41
Unit Cell:
Length (Å)Angle (°)
a = 32.440α = 90.00
b = 32.440β = 90.00
c = 85.480γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1995-09-15
    Type: Initial release
  • Version 1.1: 2008-05-22
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance