1ZZI

Crystal Structure Analysis of the third KH domain of hnRNP K in complex with ssDNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.195 

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This is version 1.2 of the entry. See complete history

Literature

X-Ray Crystallographic and NMR Studies of the Third KH Domain of hnRNP K in Complex with Single-Stranded Nucleic Acids

Backe, P.H.Messias, A.C.Ravelli, R.B.Sattler, M.Cusack, S.

(2005) STRUCTURE 13: 1055-1067

  • DOI: 10.1016/j.str.2005.04.008
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The heterogeneous nuclear ribonucleoprotein (hnRNP) K is implicated in multiple functions in the regulation of gene expression and acts as a hub at the intersection of signaling pathways and processes involving nucleic acids. Central to its function ...

    The heterogeneous nuclear ribonucleoprotein (hnRNP) K is implicated in multiple functions in the regulation of gene expression and acts as a hub at the intersection of signaling pathways and processes involving nucleic acids. Central to its function is its ability to bind both ssDNA and ssRNA via its KH (hnRNP K homology) domains. We determined crystal structures of hnRNP K KH3 domain complexed with 15-mer and 6-mer (CTC(4)) ssDNAs at 2.4 and 1.8 A resolution, respectively, and show that the KH3 domain binds specifically to both TCCC and CCCC sequences. In parallel, we used NMR to compare the binding affinity and mode of interaction of the KH3 domain with several ssRNA ligands and CTC(4) ssDNA. Based on a structure alignment of the KH3-CTC(4) complex with known structures of other KH domains in complex with ssRNA, we discuss recognition of tetranucleotide sequences by KH domains.


    Organizational Affiliation

    Grenoble Outstation, European Molecular Biology Laboratory, 6 rue Jules Horowitz, BP 181, F-38042 Grenoble Cedex 9, France.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Heterogeneous nuclear ribonucleoprotein K
A, B
82Homo sapiensMutation(s): 0 
Gene Names: HNRNPK (HNRPK)
Find proteins for P61978 (Homo sapiens)
Go to Gene View: HNRNPK
Go to UniProtKB:  P61978
Entity ID: 1
MoleculeChainsLengthOrganism
5'-D(*CP*TP*CP*CP*CP*C)-3'C,D6N/A
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.195 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 52.590α = 90.00
b = 52.590β = 90.00
c = 104.891γ = 120.00
Software Package:
Software NamePurpose
MOLREPphasing
MOSFLMdata reduction
REFMACrefinement
CCP4data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-08-09
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance