1WVN

Crsytal Structure of domain 3 of human alpha polyC binding protein


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure and RNA binding of the third KH domain of poly(C)-binding protein 1.

Sidiqi, M.Wilce, J.A.Vivian, J.P.Porter, C.J.Barker, A.Leedman, P.J.Wilce, M.C.J.

(2005) Nucleic Acids Res. 33: 1213-1221

  • DOI: 10.1093/nar/gki265

  • PubMed Abstract: 
  • Poly(C)-binding proteins (CPs) are important regulators of mRNA stability and translational regulation. They recognize C-rich RNA through their triple KH (hn RNP K homology) domain structures and are thought to carry out their function though direct ...

    Poly(C)-binding proteins (CPs) are important regulators of mRNA stability and translational regulation. They recognize C-rich RNA through their triple KH (hn RNP K homology) domain structures and are thought to carry out their function though direct protection of mRNA sites as well as through interactions with other RNA-binding proteins. We report the crystallographically derived structure of the third domain of alphaCP1 to 2.1 A resolution. alphaCP1-KH3 assumes a classical type I KH domain fold with a triple-stranded beta-sheet held against a three-helix cluster in a betaalphaalphabetabetaalpha configuration. Its binding affinity to an RNA sequence from the 3'-untranslated region (3'-UTR) of androgen receptor mRNA was determined using surface plasmon resonance, giving a K(d) of 4.37 microM, which is indicative of intermediate binding. A model of alphaCP1-KH3 with poly(C)-RNA was generated by homology to a recently reported RNA-bound KH domain structure and suggests the molecular basis for oligonucleotide binding and poly(C)-RNA specificity.


    Organizational Affiliation

    School of Biomedical and Chemical Sciences, the UWA Centre for Medical Research, The University of Western Australia WA Australia 6009.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Poly(rC)-binding protein 1
A
82Homo sapiensMutation(s): 0 
Gene Names: PCBP1
Find proteins for Q15365 (Homo sapiens)
Go to Gene View: PCBP1
Go to UniProtKB:  Q15365
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.190 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 33.400α = 90.00
b = 71.000β = 90.00
c = 29.100γ = 90.00
Software Package:
Software NamePurpose
AMoREphasing
REFMACrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-04-05
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-11
    Type: Refinement description