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 
  • R-Value Observed: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.2 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
  • Structures With Same Primary Citation

  • 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-1A, B327Homo sapiensMutation(s): 0 
Gene Names: GNAI1
EC: 3.6.5.1
Find proteins for P63096 (Homo sapiens)
Explore P63096 
Go to UniProtKB:  P63096
NIH Common Fund Data Resources
PHAROS  P63096
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
REGULATOR OF G-PROTEIN SIGNALING 14C, D40Homo sapiensMutation(s): 0 
Gene Names: RGS14
Find proteins for O43566 (Homo sapiens)
Explore O43566 
Go to UniProtKB:  O43566
NIH Common Fund Data Resources
PHAROS  O43566
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GDP
Query on GDP

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

Download CCD File 
A, B
S,R MESO-TARTARIC ACID
C4 H6 O6
FEWJPZIEWOKRBE-XIXRPRMCSA-N
 Ligand Interaction
SO4
Query on SO4

Download CCD File 
C, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 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 
  • R-Value Observed: 0.223 
  • Space Group: I 2 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 265.261α = 90
b = 265.261β = 90
c = 265.261γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-06-08
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2019-05-08
    Changes: Data collection, Experimental preparation, Other