2CXL

RUN domain of Rap2 interacting protein x, crystallized in I422 space group


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.360 
  • R-Value Work: 0.280 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of the RUN Domain of the RAP2-interacting Protein x

Kukimoto-Niino, M.Takagi, T.Akasaka, R.Murayama, K.Uchikubo-Kamo, T.Terada, T.Inoue, M.Watanabe, S.Tanaka, A.Hayashizaki, Y.Kigawa, T.Shirouzu, M.Yokoyama, S.

(2006) J.Biol.Chem. 281: 31843-31853

  • DOI: 10.1074/jbc.M604960200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Rap2-interacting protein x (RPIPx) is a homolog of RPIP8, a specific effector of Rap2 GTPase. The N-terminal region of RPIP8, which contains the RUN domain, interacts with Rap2. Using cell-free synthesis and NMR, we determined that the region encompa ...

    Rap2-interacting protein x (RPIPx) is a homolog of RPIP8, a specific effector of Rap2 GTPase. The N-terminal region of RPIP8, which contains the RUN domain, interacts with Rap2. Using cell-free synthesis and NMR, we determined that the region encompassing residues 83-255 of mouse RPIPx, which is 40-residues larger than the predicted RUN domain (residues 113-245), is the minimum fragment that forms a correctly folded protein. This fragment, the RPIPx RUN domain, interacted specifically with Rap2B in vitro in a nucleotide-dependent manner. The crystal structure of the RPIPx RUN domain was determined at 2.0 A of resolution by the multiwavelength anomalous dispersion (MAD) method. The RPIPx RUN domain comprises eight anti-parallel alpha-helices, which form an extensive hydrophobic core, followed by an extended segment. The residues in the core region are highly conserved, suggesting the conservation of the RUN domain-fold among the RUN domain-containing proteins. The residues forming a positively charged surface are conserved between RPIP8 and its homologs, suggesting that this surface is important for Rap2 binding. In the crystal the putative Rap2 binding site of the RPIPx RUN domain interacts with the extended segment in a segment-swapping manner.


    Organizational Affiliation

    RIKEN Genomic Sciences Center, Yokohama 230-0045, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
rap2 interacting protein x
A
190Mus musculusMutation(s): 0 
Gene Names: Rufy3 (D5Bwg0860e, Ripx)
Find proteins for Q9D394 (Mus musculus)
Go to UniProtKB:  Q9D394
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.2 Å
  • R-Value Free: 0.360 
  • R-Value Work: 0.280 
  • Space Group: I 4 2 2
Unit Cell:
Length (Å)Angle (°)
a = 112.774α = 90.00
b = 112.774β = 90.00
c = 76.476γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
HKL-2000data reduction
MOLREPphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-12-30
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance