3ONL

yeast Ent3_ENTH-Vti1p_Habc complex structure


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Epsin N-terminal homology domains bind on opposite sides of two SNAREs

Wang, J.Gossing, M.Fang, P.Zimmermann, J.Li, X.von Mollard, G.F.Niu, L.Teng, M.

(2011) Proc.Natl.Acad.Sci.USA 108: 12277-12282

  • DOI: 10.1073/pnas.1013101108
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • SNARE proteins are crucial for membrane fusion in vesicular transport. To ensure efficient and accurate fusion, SNAREs need to be sorted into different budding vesicles. This process is usually regulated by specific recognition between SNAREs and the ...

    SNARE proteins are crucial for membrane fusion in vesicular transport. To ensure efficient and accurate fusion, SNAREs need to be sorted into different budding vesicles. This process is usually regulated by specific recognition between SNAREs and their adaptor proteins. How different pairs of SNAREs and adaptors achieve their recognition is unclear. Here, we report the recognition between yeast SNARE Vti1p and its adaptor Ent3p derived from three crystal structures. Surprisingly, this yeast pair Vti1p/Ent3p interacts through a distinct binding site compared to their homologues vti1b/epsinR in mammals. An opposite surface on Vti1p_Habc domain binds to a conserved area on the epsin N-terminal homology (ENTH) domain of Ent3p. Two-hybrid, in vitro pull-down and in vivo experiments indicate this binding interface is important for correct localization of Vti1p in the cell. This previously undescribed discovery that a cargo and adaptor pair uses different binding sites across species suggests the diversity of SNARE-adaptor recognition in vesicular transport.


    Organizational Affiliation

    University of Science and Technology of China, Hefei, Anhui 230026, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Epsin-3
A, B
150Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: ENT3
Find proteins for P47160 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P47160
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
t-SNARE VTI1
C
97Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: VTI1
Find proteins for Q04338 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  Q04338
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.269 
  • R-Value Work: 0.223 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 58.683α = 90.00
b = 82.351β = 90.00
c = 95.953γ = 90.00
Software Package:
Software NamePurpose
MAR345dtbdata collection
REFMACrefinement
MOLREPphasing
HKL-2000data scaling
HKL-2000data reduction
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-07-20
    Type: Initial release
  • Version 1.1: 2011-12-21
    Type: Database references
  • Version 1.2: 2014-04-02
    Type: Derived calculations