1IAP | pdb_00001iap

CRYSTAL STRUCTURE OF P115RHOGEF RGRGS DOMAIN

• PDB DOI: https://doi.org/10.2210/pdb1IAP/pdb

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


• Deposited: 2001-03-22 Released: 2001-09-05 
• Deposition Author(s): Sprang, S.R., Chen, Z.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.275 (Depositor) 
• R-Value Work: 
  0.219 (Depositor), 0.231 (DCC) 
• R-Value Observed: 
  0.219 (Depositor) 

Starting Model: experimental

Literature

Structure of the rgRGS domain of p115RhoGEF.

Chen, Z., Wells, C.D., Sternweis, P.C., Sprang, S.R.

(2001) Nat Struct Biol 8: 805-809

• PubMed: 11524686 
• DOI: https://doi.org/10.1038/nsb0901-805
• Primary Citation Related Structures: 
  1IAP


• PubMed Abstract: 
  

  p115RhoGEF, a guanine nucleotide exchange factor for Rho GTPase, is also a GTPase activating protein (GAP) for G(12) and G(13) heterotrimeric G alpha subunits. Near its N-terminus, p115RhoGEF contains a domain (rgRGS) with remote sequence identity to RGS (regulators of G protein signaling) domains. The rgRGS domain is necessary but not sufficient for the GAP activity of p115RhoGEF. The 1.9 A resolution crystal structure of the rgRGS domain shows structural similarity to RGS domains but possesses a C-terminal extension that folds into a layer of helices that pack against the hydrophobic core of the domain. Mutagenesis experiments show that rgRGS may form interactions with G alpha(13) that are analogous to those in complexes of RGS proteins with their G alpha substrates.

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Organizational Affiliation: 
• Department of Biochemistry, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas, Texas 75390-9050, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 24.28 kDa 
• Atom Count: 1,624 
• Modeled Residue Count: 190 
• Deposited Residue Count: 211 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
GUANINE NUCLEOTIDE EXCHANGE FACTOR P115RHOGEF	A	211	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for Q92888 (Homo sapiens) Explore Q92888  Go to UniProtKB:  Q92888
PHAROS:  Q92888 GTEx:  ENSG00000076928

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.275 (Depositor) 
• R-Value Work:  0.219 (Depositor), 0.231 (DCC) 
• R-Value Observed: 0.219 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 36.859	α = 90
b = 37.432	β = 90
c = 128.171	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2001-09-05 
Deposition Author(s): Sprang, S.R., Chen, Z.

Revision History  

• Version 1.0: 2001-09-05
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-07
  Changes: Data collection, Database references
• Version 1.4: 2024-04-03
  Changes: Refinement description