Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 41.31 kDa 
• Atom Count: 2817 
• Modelled Residue Count: 340 
• Deposited Residue Count: 354 
• Unique protein chains: 1

1DBH

DBL AND PLECKSTRIN HOMOLOGY DOMAINS FROM HSOS1

• PDB DOI: 10.2210/pdb1DBH/pdb

• Classification: GENE REGULATION
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21
• Mutation(s): Yes 


• Deposited: 1998-12-17 Released: 1998-12-23 
• Deposition Author(s): Soisson, S.M., Kuriyan, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.269 
• R-Value Work: 0.229 
• R-Value Observed: 0.229 

Literature

Crystal structure of the Dbl and pleckstrin homology domains from the human Son of sevenless protein.

Soisson, S.M., Nimnual, A.S., Uy, M., Bar-Sagi, D., Kuriyan, J.

(1998) Cell 95: 259-268

• PubMed: 9790532 
• DOI: 10.1016/s0092-8674(00)81756-0
• Primary Citation of Related Structures:  
  1DBH


• PubMed Abstract: 
  

Proteins containing Dbl homology (DH) domains activate Rho-family GTPases by functioning as specific guanine nucleotide exchange factors. All known DH domains have associated C-terminal pleckstrin homology (PH) domains that are implicated in targeting and regulatory functions. The crystal structure of a fragment of the human Son of sevenless protein containing the DH and PH domains has been determined at 2.3 A resolution. The entirely alpha-helical DH domain is unrelated in architecture to other nucleotide exchange factors. The active site of the DH domain, identified on the basis of sequence conservation and structural features, lies near the interface between the DH and PH domains. The structure suggests that ligation of the PH domain will be coupled structurally to the GTPase binding site.

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Organizational Affiliation: 

Howard Hughes Medical Institute, The Rockefeller University, New York, New York 10021, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (HUMAN SOS 1)	A	354	Homo sapiens	Mutation(s): 9  Gene Names: SOS1
UniProt & NIH Common Fund Data Resources
Find proteins for Q07889 (Homo sapiens) Explore Q07889  Go to UniProtKB:  Q07889
PHAROS:  Q07889 GTEx:  ENSG00000115904

Small Molecules

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.269 
• R-Value Work: 0.229 
• R-Value Observed: 0.229 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 104.4	α = 90
b = 70.44	β = 96.29
c = 73.83	γ = 90

Software Package:

Software Name	Purpose
MLPHARE	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1998-12-17 
• Released Date: 1998-12-23 
Deposition Author(s): Soisson, S.M., Kuriyan, J.

Revision History  

• Version 1.0: 1998-12-23
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance