2UP1

STRUCTURE OF UP1-TELOMERIC DNA COMPLEX


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Crystal structure of the two-RRM domain of hnRNP A1 (UP1) complexed with single-stranded telomeric DNA.

Ding, J.Hayashi, M.K.Zhang, Y.Manche, L.Krainer, A.R.Xu, R.M.

(1999) Genes Dev. 13: 1102-1115


  • PubMed Abstract: 
  • Human hnRNP A1 is a versatile single-stranded nucleic acid-binding protein that functions in various aspects of mRNA maturation and in telomere length regulation. The crystal structure of UP1, the amino-terminal domain of human hnRNP A1 containing tw ...

    Human hnRNP A1 is a versatile single-stranded nucleic acid-binding protein that functions in various aspects of mRNA maturation and in telomere length regulation. The crystal structure of UP1, the amino-terminal domain of human hnRNP A1 containing two RNA-recognition motifs (RRMs), bound to a 12-nucleotide single-stranded telomeric DNA has been determined at 2.1 A resolution. The structure of the complex reveals the basis for sequence-specific recognition of the single-stranded overhangs of human telomeres by hnRNP A1. It also provides insights into the basis for high-affinity binding of hnRNP A1 to certain RNA sequences, and for nucleic acid binding and functional synergy between the RRMs. In the crystal structure, a UP1 dimer binds to two strands of DNA, and each strand contacts RRM1 of one monomer and RRM2 of the other. The two DNA strands are antiparallel, and regions of the protein flanking each RRM make important contacts with DNA. The extensive protein-protein interface seen in the crystal structure of the protein-DNA complex and the evolutionary conservation of the interface residues suggest the importance of specific protein-protein interactions for the sequence-specific recognition of single-stranded nucleic acids. Models for regular packaging of telomere 3' overhangs and for juxtaposition of alternative 5' splice sites are proposed.


    Organizational Affiliation

    W.M. Keck Structural Biology Laboratory, Cold Spring Harbor, New York 11724, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (HETEROGENEOUS NUCLEAR RIBONUCLEOPROTEIN A1)
A
183Homo sapiensGene Names: HNRNPA1 (HNRPA1)
Find proteins for P09651 (Homo sapiens)
Go to Gene View: HNRNPA1
Go to UniProtKB:  P09651
Entity ID: 1
MoleculeChainsLengthOrganism
DNA (5'-D(P*TP*AP*GP*GP*GP*TP*TP*AP*GP*GP*G)-3')B11N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.249 
  • R-Value Work: 0.195 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 51.200α = 90.00
b = 51.200β = 90.00
c = 171.090γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
AMoREphasing
CNSrefinement
PHASESphasing
SCALEPACKdata scaling
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-11-10
    Type: Initial release
  • Version 1.1: 2008-05-22
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-11-22
    Type: Refinement description