1FGY

GRP1 PH DOMAIN WITH INS(1,3,4,5)P4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.213 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis of 3-phosphoinositide recognition by pleckstrin homology domains.

Lietzke, S.E.Bose, S.Cronin, T.Klarlund, J.Chawla, A.Czech, M.P.Lambright, D.G.

(2000) Mol Cell 6: 385-394

  • DOI: 10.1016/s1097-2765(00)00038-1
  • Primary Citation of Related Structures:  
    1FGY, 1FGZ

  • PubMed Abstract: 
  • Lipid second messengers generated by phosphoinositide (PI) 3-kinases regulate diverse cellular functions through interaction with pleckstrin homology (PH) domains in modular signaling proteins. The PH domain of Grp1, a PI 3-kinase-activated exchange fact ...

    Lipid second messengers generated by phosphoinositide (PI) 3-kinases regulate diverse cellular functions through interaction with pleckstrin homology (PH) domains in modular signaling proteins. The PH domain of Grp1, a PI 3-kinase-activated exchange factor for Arf GTPases, selectively binds phosphatidylinositol 3,4,5-trisphosphate with high affinity. We have determined the structure of the Grp1 PH domain in the unliganded form and bound to inositol 1,3,4,5-tetraphosphate. A novel mode of phosphoinositide recognition involving a 20-residue insertion within the beta6/beta7 loop explains the unusually high specificity of the Grp1 PH domain and the promiscuous 3-phosphoinositide binding typical of several PH domains including that of protein kinase B. When compared to other PH domains, general determinants of 3-phosphoinositide recognition and specificity can be deduced.


    Organizational Affiliation

    Program in Molecular Medicine, University of Massachusetts Medical Center, Worcester 01605, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
GRP1 A127Mus musculusMutation(s): 2 
Gene Names: Cyth3Grp1Pscd3
Find proteins for O08967 (Mus musculus)
Explore O08967 
Go to UniProtKB:  O08967
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
4IP
Query on 4IP

Download Ideal Coordinates CCD File 
A
INOSITOL-(1,3,4,5)-TETRAKISPHOSPHATE
C6 H16 O18 P4
CIPFCGZLFXVXBG-CNWJWELYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
AL-PEPTIDE LINKINGC5 H11 N O2 SeMET
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
4IPKd:  100   nM  BindingDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.213 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.3α = 90
b = 107β = 90
c = 36.9γ = 90
Software Package:
Software NamePurpose
SHARPphasing
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-08-23
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance