4BZK

The structure of the COPII coat assembled on membranes


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SUBTOMOGRAM AVERAGING 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

The Structure of the Copii Transport-Vesicle Coat Assembled on Membranes

Zanetti, G.Prinz, S.Daum, S.Meister, A.Schekman, R.Bacia, K.Briggs, J.A.G.

(2013) Elife 2: 00951

  • DOI: 10.7554/eLife.00951
  • Primary Citation of Related Structures:  4BZI, 4BZJ

  • PubMed Abstract: 
  • Coat protein complex II (COPII) mediates formation of the membrane vesicles that export newly synthesised proteins from the endoplasmic reticulum. The inner COPII proteins bind to cargo and membrane, linking them to the outer COPII components that fo ...

    Coat protein complex II (COPII) mediates formation of the membrane vesicles that export newly synthesised proteins from the endoplasmic reticulum. The inner COPII proteins bind to cargo and membrane, linking them to the outer COPII components that form a cage around the vesicle. Regulated flexibility in coat architecture is essential for transport of a variety of differently sized cargoes, but structural data on the assembled coat has not been available. We have used cryo-electron tomography and subtomogram averaging to determine the structure of the complete, membrane-assembled COPII coat. We describe a novel arrangement of the outer coat and find that the inner coat can assemble into regular lattices. The data reveal how coat subunits interact with one another and with the membrane, suggesting how coordinated assembly of inner and outer coats can mediate and regulate packaging of vesicles ranging from small spheres to large tubular carriers. DOI:http://dx.doi.org/10.7554/eLife.00951.001.


    Organizational Affiliation

    Department of Molecular and Cell Biology , University of California, Berkeley , Berkeley , United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN TRANSPORT PROTEIN SEC31
A, C
1273Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Gene Names: SEC31 (WEB1)
Find proteins for P38968 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P38968
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
PROTEIN TRANSPORT PROTEIN SEC13
B
297Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Gene Names: SEC13 (ANU3)
Find proteins for Q04491 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: SEC13
Go to UniProtKB:  Q04491
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
PROTEIN TRANSPORT PROTEIN SEC13
F
297Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Gene Names: SEC13 (ANU3)
Find proteins for Q04491 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: SEC13
Go to UniProtKB:  Q04491
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 40 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SUBTOMOGRAM AVERAGING 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-09-18
    Type: Initial release
  • Version 1.1: 2013-10-09
    Type: Database references
  • Version 1.2: 2017-08-30
    Type: Data collection, Experimental preparation, Refinement description