1PBW

STRUCTURE OF BCR-HOMOLOGY (BH) DOMAIN

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.184 

wwPDB Validation 3D Report Full Report


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

Literature

Crystal structure of the breakpoint cluster region-homology domain from phosphoinositide 3-kinase p85 alpha subunit.

Musacchio, A., Cantley, L.C., Harrison, S.C.

(1996) Proc.Natl.Acad.Sci.USA 93: 14373-14378


  • PubMed Abstract: 

    • Proteins such as the product of the break-point cluster region, chimaerin, and the Src homology 3-binding protein 3BP1, are GTPase activating proteins (GAPs) for members of the Rho subfamily of small GTP-binding proteins (G proteins or GTPases). A 20 ...

    Proteins such as the product of the break-point cluster region, chimaerin, and the Src homology 3-binding protein 3BP1, are GTPase activating proteins (GAPs) for members of the Rho subfamily of small GTP-binding proteins (G proteins or GTPases). A 200-residue region, named the breakpoint cluster region-homology (BH) domain, is responsible for the GAP activity. We describe here the crystal structure of the BH domain from the p85 subunit of phosphatidylinositol 3-kinase at 2.0 A resolution. The domain is composed of seven helices, having a previously unobserved arrangement. A core of four helices contains most residues that are conserved in the BH family. Their packing suggests the location of a G-protein binding site. This structure of a GAP-like domain for small GTP-binding proteins provides a framework for analyzing the function of this class of molecules.

    Related Citations: 
    • Cloning of Pi3 Kinase-Associated P85 Utilizing a Novel Method for Expression/Cloning of Target Proteins for Receptor Tyrosine Kinases
      Skolnik, E.Y.,Margolis, B.,Mohammadi, M.,Lowenstein, E.,Fischer, R.,Drepps, A.,Ullrich, A.,Schlessinger, J.
      (1991) Cell 65: 83

    Organizational Affiliation: 

    Laboratory of Molecular Medicine, Children's Hospital, Boston, MA 02115, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PHOSPHATIDYLINOSITOL 3-KINASE
A, B
216Homo sapiensMutation(s): 0 
Gene Names: PIK3R1 (GRB1)
Find proteins for P27986 (Homo sapiens)
Go to Gene View: PIK3R1
Go to UniProtKB:  P27986
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.184 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 39.051α = 90.00
b = 90.513β = 97.19
c = 69.280γ = 90.00
Software Package:
Software NamePurpose
ARP/wARPmodel building
DENZOdata reduction
X-PLORphasing
X-PLORmodel building
X-PLORrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-03-12
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance