1KOO

THE CRYSTAL STRUCTURE AND MUTATIONAL ANALYSIS OF A NOVEL RNA-BINDING DOMAIN FOUND IN THE HUMAN TAP NUCLEAR MRNA EXPORT FACTOR

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.80 Å
  • R-Value Free: 0.395 
  • R-Value Work: 0.317 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

The crystal structure and mutational analysis of a novel RNA-binding domain found in the human Tap nuclear mRNA export factor.

Ho, D.N., Coburn, G.A., Kang, Y., Cullen, B.R., Georgiadis, M.M.

(2002) Proc Natl Acad Sci U S A 99: 1888-1893

  • DOI: 10.1073/pnas.042698599
  • Primary Citation of Related Structures:  
    1KOH, 1KOO

  • PubMed Abstract: 

    • The Tap protein mediates the sequence nonspecific nuclear export of cellular mRNAs as well as the sequence-specific export of retroviral mRNAs bearing the constitutive transport element (CTE). Previously, the structures of individual Tap subdomains, incl ...

    The Tap protein mediates the sequence nonspecific nuclear export of cellular mRNAs as well as the sequence-specific export of retroviral mRNAs bearing the constitutive transport element (CTE). Previously, the structures of individual Tap subdomains, including ribonucleoprotein and leucine-rich repeat domains, have been described. Here, we report the crystal structure of a functional CTE RNA-binding domain of human Tap, including the N-terminal arm of the ribonucleoprotein domain and interdomain linking polypeptide. To identify residues that interact with the CTE, we have introduced 38 alanine substitutions for surface residues in the Tap CTE-binding domain and tested these mutants for their ability to support CTE-dependent nuclear RNA export and CTE binding. Four residues that cluster on a concave surface in the leucine-rich repeat domain were found to be critical for CTE binding and define a CTE-interacting surface on this domain. The second critical CTE-interacting surface on Tap is defined by three previously identified residues on the surface of the ribonucleoprotein domain. The structural and mutational data define a novel RNA-binding site on the Tap protein.

    Related Citations: 
    • Using viral species specificity to define a critical protein/RNA interaction surface
      Coburn, G.A., Wiegand, H.L., Kang, Y., Ho, D.N., Georgiadis, M.M., Cullen, B.R.
      (2001) Genes Dev 15: 1194
    • THE STRUCTURE OF THE MRNA EXPORT FACTOR TAP REVEALS A CIS ARRANGEMENT OF A NON-CANONICAL RNP DOMAIN AND AN LRR DOMAIN
      Liker, E., Fernandez, E., Izaurralde, E., Conti, E.
      (2000) EMBO J 19: 5587
    Organizational Affiliation: 

    Waksman Institute and Department of Chemistry, Rutgers University, Piscataway, NJ 08854, USA.



Macromolecules
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(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
TIP ASSOCIATING PROTEIN A, B, C, D277Homo sapiensMutation(s): 1 
Gene Names: NXF1, TAP
Find proteins for Q9UBU9 (Homo sapiens)
Explore Q9UBU9 
Go to UniProtKB:  Q9UBU9
NIH Common Fund Data Resources
PHAROS:  Q9UBU9
GTEx:  ENSG00000162231
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.80 Å
  • R-Value Free: 0.395 
  • R-Value Work: 0.317 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 138.245α = 90
b = 138.245β = 90
c = 204.998γ = 90
Software Package:
Software NamePurpose
AMoREphasing
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-02-27
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance