7B6R

Drosophila melanogaster TRAPPIII partial complex: core plus C8 and C11 attached region


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 2.2 of the entry. See complete history


Literature

Cryo-EM structure of metazoan TRAPPIII, the multi-subunit complex that activates the GTPase Rab1.

Galindo, A.Planelles-Herrero, V.J.Degliesposti, G.Munro, S.

(2021) EMBO J 40: e107608-e107608

  • DOI: 10.15252/embj.2020107608
  • Primary Citation of Related Structures:  
    7B6D, 7B6E, 7B6H, 7B70, 7B6R

  • PubMed Abstract: 
  • The TRAPP complexes are nucleotide exchange factors that play essential roles in membrane traffic and autophagy. TRAPPII activates Rab11, and TRAPPIII activates Rab1, with the two complexes sharing a core of small subunits that affect nucleotide exchange but being distinguished by specific large subunits that are essential for activity in vivo ...

    The TRAPP complexes are nucleotide exchange factors that play essential roles in membrane traffic and autophagy. TRAPPII activates Rab11, and TRAPPIII activates Rab1, with the two complexes sharing a core of small subunits that affect nucleotide exchange but being distinguished by specific large subunits that are essential for activity in vivo. Crystal structures of core subunits have revealed the mechanism of Rab activation, but how the core and the large subunits assemble to form the complexes is unknown. We report a cryo-EM structure of the entire Drosophila TRAPPIII complex. The TRAPPIII-specific subunits TRAPPC8 and TRAPPC11 hold the catalytic core like a pair of tongs, with TRAPPC12 and TRAPPC13 positioned at the joint between them. TRAPPC2 and TRAPPC2L link the core to the two large arms, with the interfaces containing residues affected by disease-causing mutations. The TRAPPC8 arm is positioned such that it would contact Rab1 that is bound to the core, indicating how the arm could determine the specificity of the complex. A lower resolution structure of TRAPPII shows a similar architecture and suggests that the TRAPP complexes evolved from a single ur-TRAPP.


    Organizational Affiliation

    MRC Laboratory of Molecular Biology, Cambridge, UK.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
FI18195p1A307Drosophila melanogasterMutation(s): 0 
Gene Names: l(3)76BDmDmel\CG8793l(3)76BDm-RAl(3)L3809TRAPPC8CG8793Dmel_CG8793
UniProt
Find proteins for Q9VW22 (Drosophila melanogaster)
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Trafficking protein particle complex subunit 11B718Drosophila melanogasterMutation(s): 0 
Gene Names: gryDmel\CG17569gryzl(3)63BdTRAPPC11CG17569Dmel_CG17569
UniProt
Find proteins for Q8IRE3 (Drosophila melanogaster)
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Trafficking protein particle complex subunitC, I178Drosophila melanogasterMutation(s): 0 
Gene Names: BET3Bet3pdBet3Dmel\CG3911TRAPPC3CG3911Dmel_CG3911Bet3
UniProt
Find proteins for Q9VSY8 (Drosophila melanogaster)
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
GEO08327p1D152Drosophila melanogasterMutation(s): 0 
Gene Names: Trs33BcDNA:RH37427Dmel\CG6196dTrs33TRAPPC6Trs33pCG6196Dmel_CG6196
UniProt
Find proteins for Q9VF82 (Drosophila melanogaster)
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Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
Trafficking protein particle complex subunitE145Drosophila melanogasterMutation(s): 0 
Gene Names: BET5Bet5pCG1359-RADmel\CG1359TRAPPC1CG1359Dmel_CG1359Bet5
UniProt
Find proteins for Q9VA95 (Drosophila melanogaster)
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Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
Trafficking protein particle complex subunitF219Drosophila melanogasterMutation(s): 0 
Gene Names: TRS23CG9298-RADmel\CG9298TRAPPC4Trs23pCG9298Dmel_CG9298Trs23
UniProt
Find proteins for Q9VLI9 (Drosophila melanogaster)
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Entity ID: 7
MoleculeChainsSequence LengthOrganismDetailsImage
Probable trafficking protein particle complex subunit 2G139Drosophila melanogasterMutation(s): 0 
Gene Names: Trs20l(3)72DhCG5161
UniProt
Find proteins for Q9VUZ1 (Drosophila melanogaster)
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Entity ID: 8
MoleculeChainsSequence LengthOrganismDetailsImage
Trafficking protein particle complex subunit 5H194Drosophila melanogasterMutation(s): 0 
Gene Names: Trs31Dmel\CG10153TRAPPC5Trs31pCG10153Dmel_CG10153
UniProt
Find proteins for Q7K2Q8 (Drosophila melanogaster)
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Entity ID: 9
MoleculeChainsSequence LengthOrganismDetailsImage
TRAPPC2LJ138Drosophila melanogasterMutation(s): 0 
Gene Names: Dmel\CG9067Tca17TRAPPC2LCG9067Dmel_CG9067
UniProt
Find proteins for A1Z8I0 (Drosophila melanogaster)
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Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 5.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-06-09
    Type: Initial release
  • Version 1.1: 2021-06-16
    Changes: Database references
  • Version 2.0: 2021-06-23
    Changes: Advisory, Atomic model, Database references, Derived calculations, Polymer sequence, Source and taxonomy, Structure summary
  • Version 2.1: 2021-07-07
    Changes: Database references
  • Version 2.2: 2021-07-28
    Changes: Database references