1E96

Structure of the Rac/p67phox complex

• PDB DOI: https://doi.org/10.2210/pdb1E96/pdb
• BMRB: 5511

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


• Deposited: 2000-10-10 Released: 2000-11-17 
• Deposition Author(s): Lapouge, K., Smith, S.J.M., Walker, P.A., Gamblin, S.J., Smerdon, S.J., Rittinger, K.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.284 
• R-Value Work: 0.244 
• R-Value Observed: 0.248 

Starting Models: experimental

Literature

Structure of the TPR domain of p67phox in complex with Rac.GTP.

Lapouge, K., Smith, S.J., Walker, P.A., Gamblin, S.J., Smerdon, S.J., Rittinger, K.

(2000) Mol Cell 6: 899-907

• PubMed: 11090627 
• DOI: https://doi.org/10.1016/s1097-2765(05)00091-2
• Primary Citation of Related Structures:  
  1E96


• PubMed Abstract: 
  

  p67phox is an essential part of the NADPH oxidase, a multiprotein enzyme complex that produces superoxide ions in response to microbial infection. Binding of the small GTPase Rac to p67phox is a key step in the assembly of the active enzyme complex. The structure of Rac.GTP bound to the N-terminal TPR (tetratricopeptide repeat) domain of p67phox reveals a novel mode of Rho family/effector interaction and explains the basis of GTPase specificity. Complex formation is largely mediated by an insertion between two TPR motifs, suggesting an unsuspected versatility of TPR domains in target recognition and in their more general role as scaffolds for the assembly of multiprotein complexes.

---

Organizational Affiliation: 

Division of Protein Structure, National Institute for Medical Research, London, United Kingdom.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 45.47 kDa 
• Atom Count: 2,998 
• Modelled Residue Count: 363 
• Deposited Residue Count: 395 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
RAS-RELATED C3 BOTULINUM TOXIN SUBSTRATE 1	A	192	Homo sapiens	Mutation(s): 1  EC: 3.6.5.2
UniProt & NIH Common Fund Data Resources
Find proteins for P63000 (Homo sapiens) Explore P63000  Go to UniProtKB:  P63000
PHAROS:  P63000 GTEx:  ENSG00000136238

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
NEUTROPHIL CYTOSOL FACTOR 2 (NCF-2) TPR DOMAIN, RESIDUES 1-203	B	203	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P19878 (Homo sapiens) Explore P19878  Go to UniProtKB:  P19878
PHAROS:  P19878 GTEx:  ENSG00000116701

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GTP	C [auth A]	GUANOSINE-5'-TRIPHOSPHATE C10 H16 N5 O14 P3 XKMLYUALXHKNFT-UUOKFMHZSA-N
MG	D [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.284 
• R-Value Work: 0.244 
• R-Value Observed: 0.248 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 83.22	α = 90
b = 83.22	β = 90
c = 138.53	γ = 120

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2000-11-17 
Deposition Author(s): Lapouge, K., Smith, S.J.M., Walker, P.A., Gamblin, S.J., Smerdon, S.J., Rittinger, K.

Revision History  

• Version 1.0: 2000-11-17
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2019-10-09
  Changes: Data collection, Database references
• Version 1.4: 2023-12-13
  Changes: Data collection, Database references, Derived calculations, Refinement description