6TGC

CryoEM structure of the ternary DOCK2-ELMO1-RAC1 complex.


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure of the DOCK2-ELMO1 complex provides insights into regulation of the auto-inhibited state.

Chang, L.Yang, J.Jo, C.H.Boland, A.Zhang, Z.McLaughlin, S.H.Abu-Thuraia, A.Killoran, R.C.Smith, M.J.Cote, J.F.Barford, D.

(2020) Nat Commun 11: 3464-3464

  • DOI: https://doi.org/10.1038/s41467-020-17271-9
  • Primary Citation of Related Structures:  
    6TGB, 6TGC, 6UKA

  • PubMed Abstract: 

    DOCK (dedicator of cytokinesis) proteins are multidomain guanine nucleotide exchange factors (GEFs) for RHO GTPases that regulate intracellular actin dynamics. DOCK proteins share catalytic (DOCK DHR2 ) and membrane-associated (DOCK DHR1 ) domains. The structurally-related DOCK1 and DOCK2 GEFs are specific for RAC, and require ELMO (engulfment and cell motility) proteins for function. The N-terminal RAS-binding domain (RBD) of ELMO (ELMO RBD ) interacts with RHOG to modulate DOCK1/2 activity. Here, we determine the cryo-EM structures of DOCK2-ELMO1 alone, and as a ternary complex with RAC1, together with the crystal structure of a RHOG-ELMO2 RBD complex. The binary DOCK2-ELMO1 complex adopts a closed, auto-inhibited conformation. Relief of auto-inhibition to an active, open state, due to a conformational change of the ELMO1 subunit, exposes binding sites for RAC1 on DOCK2 DHR2 , and RHOG and BAI GPCRs on ELMO1. Our structure explains how up-stream effectors, including DOCK2 and ELMO1 phosphorylation, destabilise the auto-inhibited state to promote an active GEF.


  • Organizational Affiliation

    MRC Laboratory of Molecular Biology, Cambridge, CB2 0QH, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Dedicator of cytokinesis protein 2
A, D
1,830Homo sapiensMutation(s): 0 
Gene Names: DOCK2KIAA0209
UniProt & NIH Common Fund Data Resources
Find proteins for Q92608 (Homo sapiens)
Explore Q92608 
Go to UniProtKB:  Q92608
PHAROS:  Q92608
GTEx:  ENSG00000134516 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ92608
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Engulfment and cell motility protein 1
B, E
727Homo sapiensMutation(s): 0 
Gene Names: ELMO1KIAA0281
UniProt & NIH Common Fund Data Resources
Find proteins for Q92556 (Homo sapiens)
Explore Q92556 
Go to UniProtKB:  Q92556
PHAROS:  Q92556
GTEx:  ENSG00000155849 
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UniProt GroupQ92556
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  • Reference Sequence
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Ras-related C3 botulinum toxin substrate 1
C, F
192Homo sapiensMutation(s): 0 
Gene Names: RAC1TC25MIG5
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 Groups  
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UniProt GroupP63000
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 4.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONRELION1.4

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Medical Research Council (United Kingdom)United KingdomMC_UP_1201/6
Cancer Research UKUnited KingdomC576/A14109
Marie Sklodowska-Curie Actions, FragNET ITNEuropean Union657725

Revision History  (Full details and data files)

  • Version 1.0: 2020-07-29
    Type: Initial release
  • Version 1.1: 2023-05-24
    Changes: Database references, Structure summary
  • Version 1.2: 2023-07-26
    Changes: Author supporting evidence, Other
  • Version 1.3: 2024-07-10
    Changes: Data collection