Macromolecule Content

• Total Structure Weight: 23.97 kDa 
• Atom Count: 1673 
• Residue Count: 209 
• Unique protein chains: 1

1BY1

DBL homology domain from beta-PIX

• DOI: 10.2210/pdb1BY1/pdb

• Classification: TRANSPORT PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 1998-10-22 Released: 1999-10-24 
• Deposition Author(s): Aghazadeh, B., Zhu, K., Kubiseski, T.J., Liu, G.A., Pawson, T., Zheng, Y., Rosen, M.K.

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Experimental Data Snapshot

• Method: SOLUTION NMR
• Conformers Calculated: 80 
• Conformers Submitted: 20 
• Selection Criteria: LEAST RESTRAINT VIOLATION 

Literature

Structure and Mutagenesis of the Dbl Homology Domain

Aghazadeh, B., Zhu, K., Kubiseski, T.J., Liu, G.A., Pawson, T., Zheng, Y., Rosen, M.K.

(1998) Nat Struct Biol 5: 1098-1107

• PubMed: 9846881 
• DOI: 10.1038/4209
• Primary Citation of Related Structures:  
  1BY1


• PubMed Abstract: 
  

Guanine nucleotide exchange factors in the Dbl family activate Rho GTPases by accelerating dissociation of bound GDP, promoting acquisition of the GTP-bound state. Dbl proteins possess a approximately 200 residue catalytic Dbl-homology (DH) domain, that is arranged in tandem with a C-terminal pleckstrin homology (PH) domain in nearly all cases. Here we report the solution structure of the DH domain of human PAK-interacting exchange protein (betaPIX). The domain is composed of 11 alpha-helices that form a flattened, elongated bundle. The structure explains a large body of mutagenesis data, which, along with sequence comparisons, identify the GTPase interaction site as a surface formed by three conserved helices near the center of one face of the domain. Proximity of the site to the DH C-terminus suggests a means by which PH-ligand interactions may be coupled to DH-GTPase interactions to regulate signaling through the Dbl proteins in vivo.

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Organizational Affiliation: 

Cellular Biochemistry and Biophysics Program, Memorial Sloan-Kettering Cancer Center, New York, New York 10021, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (PIX)	A	209	Homo sapiens	Mutation(s): 0  Gene Names: ARHGEF7, COOL1, KIAA0142, P85SPR, PAK3BP, PIXB, Nbla10314
Find proteins for Q14155 (Homo sapiens) Explore Q14155  Go to UniProtKB:  Q14155
NIH Common Fund Data Resources
PHAROS:  Q14155 GTEx:  ENSG00000102606

Experimental Data & Validation

Experimental Data

• Method: SOLUTION NMR
• Conformers Calculated: 80 
• Conformers Submitted: 20 
• Selection Criteria: LEAST RESTRAINT VIOLATION 
• OLDERADO: 1BY1 Olderado

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1998-10-22 
• Released Date: 1999-10-24 
Deposition Author(s): Aghazadeh, B., Zhu, K., Kubiseski, T.J., Liu, G.A., Pawson, T., Zheng, Y., Rosen, M.K.

Revision History 

• Version 1.0: 1999-10-24
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance