1RXA

CRYSTAL STRUCTURE OF R(CCCCGGGG) IN TWO DISTINCT LATTICES


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Work: 0.250 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The crystal structure of r(CCCCGGGG) in two distinct lattices.

Portmann, S.Usman, N.Egli, M.

(1995) Biochemistry 34: 7569-7575

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The structure of the RNA octamer r(C4G4) has been determined in two different crystal forms. The conformations of the RNA duplex in the rhombohedral and hexagonal lattices display only minimal deviations, demonstrating that the RNA double helix is co ...

    The structure of the RNA octamer r(C4G4) has been determined in two different crystal forms. The conformations of the RNA duplex in the rhombohedral and hexagonal lattices display only minimal deviations, demonstrating that the RNA double helix is considerably less deformable than the DNA double helix. For the first time the crystal structures of an A-RNA and an A-DNA with identical sequence can now be compared. The large number of ordered water molecules observed in the minor groove of the RNA duplex suggests that an important contribution to its higher rigidity derives from the improved hydration due to the presence of the 2'-hydroxyl groups. Our finding that the conformation of the RNA double helix is virtually unaffected by different crystal packing modes provides evidence that proteins may not alter the conformation of RNA stem regions in a significant way.


    Organizational Affiliation

    Organic Chemistry Laboratory, ETH Swiss Federal Institute of Technology, Z├╝rich.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
RNA (5'-R(*CP*CP*CP*CP*GP*GP*GP*G)-3')A8N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Work: 0.250 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 39.734α = 90.00
b = 39.734β = 90.00
c = 58.545γ = 120.00
Software Package:
Software NamePurpose
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-10-20
    Type: Initial release
  • Version 1.1: 2008-05-22
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance