3KRM

Imp1 kh34


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.200 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

ZBP1 recognition of beta-actin zipcode induces RNA looping.

Chao, J.A.Patskovsky, Y.Patel, V.Levy, M.Almo, S.C.Singer, R.H.

(2010) Genes Dev 24: 148-158

  • DOI: 10.1101/gad.1862910
  • Primary Citation of Related Structures:  
    3KRM

  • PubMed Abstract: 
  • ZBP1 (zipcode-binding protein 1) was originally discovered as a trans-acting factor for the "zipcode" in the 3' untranslated region (UTR) of the beta-actin mRNA that is important for its localization and translational regulation. Subsequently, ZBP1 has been found to be a multifunctional regulator of RNA metabolism that controls aspects of localization, stability, and translation for many mRNAs ...

    ZBP1 (zipcode-binding protein 1) was originally discovered as a trans-acting factor for the "zipcode" in the 3' untranslated region (UTR) of the beta-actin mRNA that is important for its localization and translational regulation. Subsequently, ZBP1 has been found to be a multifunctional regulator of RNA metabolism that controls aspects of localization, stability, and translation for many mRNAs. To reveal how ZBP1 recognizes its RNA targets, we biochemically characterized the interaction between ZBP1 and the beta-actin zipcode. The third and fourth KH (hnRNP K homology) domains of ZBP1 specifically recognize a bipartite RNA element located within the first 28 nucleotides of the zipcode. The spacing between the RNA sequences is consistent with the structure of IMP1 KH34, the human ortholog of ZBP1, that we solved by X-ray crystallography. The tandem KH domains are arranged in an intramolecular anti-parallel pseudodimer conformation with the canonical RNA-binding surfaces at opposite ends of the molecule. This orientation of the KH domains requires that the RNA backbone must undergo an approximately 180 degrees change in direction in order for both KH domains to contact the RNA simultaneously. The RNA looping induced by ZBP1 binding provides a mechanism for specific recognition and may facilitate the assembly of post-transcriptional regulatory complexes by remodeling the bound transcript.


    Organizational Affiliation

    Department of Anatomy and Structural Biology, Albert Einstein College of Medicine, Bronx, New York 10461, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Insulin-like growth factor 2 mRNA-binding protein 1A, B, C163Homo sapiensMutation(s): 0 
Gene Names: IGF2BP1CRDBPVICKZ1ZBP1
Find proteins for Q9NZI8 (Homo sapiens)
Explore Q9NZI8 
Go to UniProtKB:  Q9NZI8
NIH Common Fund Data Resources
PHAROS:  Q9NZI8
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.200 
  • Space Group: P 65
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.53α = 90
b = 103.53β = 90
c = 131.6γ = 120
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-02-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Author supporting evidence