2XNS

Crystal Structure Of Human G alpha i1 Bound To A Designed Helical Peptide Derived From The Goloco Motif Of RGS14


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.41 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Computational Design of the Sequence and Structure of a Protein-Binding Peptide.

Sammond, D.W.Bosch, D.E.Butterfoss, G.L.Purbeck, C.Machius, M.Siderovski, D.P.Kuhlman, B.

(2011) J.Am.Chem.Soc. 133: 4190

  • DOI: 10.1021/ja110296z

  • PubMed Abstract: 
  • The de novo design of protein-binding peptides is challenging because it requires the identification of both a sequence and a backbone conformation favorable for binding. We used a computational strategy that iterates between structure and sequence o ...

    The de novo design of protein-binding peptides is challenging because it requires the identification of both a sequence and a backbone conformation favorable for binding. We used a computational strategy that iterates between structure and sequence optimization to redesign the C-terminal portion of the RGS14 GoLoco motif peptide so that it adopts a new conformation when bound to Gα(i1). An X-ray crystal structure of the redesigned complex closely matches the computational model, with a backbone root-mean-square deviation of 1.1 Å.


    Related Citations: 
    • Structure-Based Protocol for Identifying Mutations that Enhance Protein-Protein Binding Affinities.
      Sammond, D.W.,Eletr, Z.M.,Purbeck, C.,Kimple, R.J.,Siderovski, D.P.,Kuhlman, B.
      (2007) J.Mol.Biol. 371: 1392
    • Structural Determinants for Goloco-Induced Inhibition of Nucleotide Release by Galpha Subunits.
      Kimple, R.J.,Kimple, M.E.,Betts, L.,Sondek, J.,Siderovski, D.P.
      (2002) Nature 416: 878


    Organizational Affiliation

    Department of Biochemistry and Biophysics, University of North Carolina, Chapel Hill, North Carolina 27599-7260, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GUANINE NUCLEOTIDE-BINDING PROTEIN G(I) SUBUNIT ALPHA-1
A, B
327Homo sapiensMutation(s): 0 
Gene Names: GNAI1
Find proteins for P63096 (Homo sapiens)
Go to Gene View: GNAI1
Go to UniProtKB:  P63096
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
REGULATOR OF G-PROTEIN SIGNALING 14
C, D
40Homo sapiensMutation(s): 0 
Gene Names: RGS14
Find proteins for O43566 (Homo sapiens)
Go to Gene View: RGS14
Go to UniProtKB:  O43566
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

Download SDF File 
Download CCD File 
A, B
GUANOSINE-5'-DIPHOSPHATE
C10 H15 N5 O11 P2
QGWNDRXFNXRZMB-UUOKFMHZSA-N
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
C, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
SRT
Query on SRT

Download SDF File 
Download CCD File 
A, B
S,R MESO-TARTARIC ACID
C4 H6 O6
FEWJPZIEWOKRBE-XIXRPRMCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.41 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.223 
  • Space Group: I 2 3
Unit Cell:
Length (Å)Angle (°)
a = 265.261α = 90.00
b = 265.261β = 90.00
c = 265.261γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-06-08
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance