3VHL

Crystal structure of the DHR-2 domain of DOCK8 in complex with Cdc42 (T17N mutant)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.085 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.178 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

DOCK8 is a Cdc42 activator critical for interstitial dendritic cell migration during immune responses.

Harada, Y.Tanaka, Y.Terasawa, M.Pieczyk, M.Habiro, K.Katakai, T.Hanawa-Suetsugu, K.Kukimoto-Niino, M.Nishizaki, T.Shirouzu, M.Duan, X.Uruno, T.Nishikimi, A.Sanematsu, F.Yokoyama, S.Stein, J.V.Kinashi, T.Fukui, Y.

(2012) Blood 119: 4451-4461

  • DOI: 10.1182/blood-2012-01-407098

  • PubMed Abstract: 
  • To migrate efficiently through the interstitium, dendritic cells (DCs) constantly adapt their shape to the given structure of the extracellular matrix and follow the path of least resistance. It is known that this amoeboid migration of DCs requires C ...

    To migrate efficiently through the interstitium, dendritic cells (DCs) constantly adapt their shape to the given structure of the extracellular matrix and follow the path of least resistance. It is known that this amoeboid migration of DCs requires Cdc42, yet the upstream regulators critical for localization and activation of Cdc42 remain to be determined. Mutations of DOCK8, a member of the atypical guanine nucleotide exchange factor family, causes combined immunodeficiency in humans. In the present study, we show that DOCK8 is a Cdc42-specific guanine nucleotide exchange factor that is critical for interstitial DC migration. By generating the knockout mice, we found that in the absence of DOCK8, DCs failed to accumulate in the lymph node parenchyma for T-cell priming. Although DOCK8-deficient DCs migrated normally on 2-dimensional surfaces, DOCK8 was required for DCs to crawl within 3-dimensional fibrillar networks and to transmigrate through the subcapsular sinus floor. This function of DOCK8 depended on the DHR-2 domain mediating Cdc42 activation. DOCK8 deficiency did not affect global Cdc42 activity. However, Cdc42 activation at the leading edge membrane was impaired in DOCK8-deficient DCs, resulting in a severe defect in amoeboid polarization and migration. Therefore, DOCK8 regulates interstitial DC migration by controlling Cdc42 activity spatially.


    Organizational Affiliation

    Division of Immunogenetics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Dedicator of cytokinesis protein 8
A
288Mus musculusMutation(s): 0 
Gene Names: Dock8
Find proteins for Q8C147 (Mus musculus)
Go to UniProtKB:  Q8C147
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Cell division control protein 42 homolog
B
195Homo sapiensMutation(s): 2 
Gene Names: CDC42
Find proteins for P60953 (Homo sapiens)
Go to Gene View: CDC42
Go to UniProtKB:  P60953
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
PO4
Query on PO4

Download SDF File 
Download CCD File 
A, B
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.085 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.178 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 104.185α = 90.00
b = 73.279β = 104.82
c = 65.031γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PHENIXmodel building
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-06-20
    Type: Initial release