4C40

The molecular recognition of kink turn structure by the L7Ae class of proteins


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.220 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Molecular Recognition of Kink-Turn Structure by the L7Ae Class of Proteins.

Huang, L.Lilley, D.M.J.

(2013) RNA 19: 1703

  • DOI: 10.1261/rna.041517.113
  • Primary Citation of Related Structures:  4BW0

  • PubMed Abstract: 
  • L7Ae is a member of a protein family that binds kink-turns (k-turns) in many functional RNA species. We have solved the X-ray crystal structure of the near-consensus sequence Kt-7 of Haloarcula marismortui bound by Archaeoglobus fulgidus L7Ae at 2.3- ...

    L7Ae is a member of a protein family that binds kink-turns (k-turns) in many functional RNA species. We have solved the X-ray crystal structure of the near-consensus sequence Kt-7 of Haloarcula marismortui bound by Archaeoglobus fulgidus L7Ae at 2.3-Å resolution. We also present a structure of Kt-7 in the absence of bound protein at 2.2-Å resolution. As a result, we can describe a general mode of recognition of k-turn structure by the L7Ae family proteins. The protein makes interactions in the widened major groove on the outer face of the k-turn. Two regions of the protein are involved. One is an α-helix that enters the major groove of the NC helix, making both nonspecific backbone interactions and specific interactions with the guanine nucleobases of the conserved G • A pairs. A hydrophobic loop makes close contact with the L1 and L2 bases, and a glutamate side chain hydrogen bonds with L1. Taken together, these interactions are highly selective for the structure of the k-turn and suggest how conformational selection of the folded k-turn occurs.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsLengthOrganism
5'-(*GP*GP*CP*GP*AP*AP*GP*AP*AP*CP*CP*GP*GP*GP *GP*AP*GP*CP*C)-3'A19Haloarcula marismortui
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.220 
  • Space Group: P 63 2 2
Unit Cell:
Length (Å)Angle (°)
a = 70.250α = 90.00
b = 70.250β = 90.00
c = 47.700γ = 120.00
Software Package:
Software NamePurpose
Aimlessdata scaling
XDSdata reduction
PHENIXrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-11-06
    Type: Initial release
  • Version 1.1: 2013-11-20
    Type: Derived calculations
  • Version 1.2: 2013-11-27
    Type: Database references