4J87

Crystal structure of alpha-COP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.67 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.167 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Rules for the recognition of dilysine retrieval motifs by coatomer.

Ma, W.Goldberg, J.

(2013) Embo J. 32: 926-937

  • DOI: 10.1038/emboj.2013.41
  • Primary Citation of Related Structures:  4J73, 4J77, 4J78, 4J79, 4J81, 4J82, 4J84, 4J86, 4J8B, 4J8G

  • PubMed Abstract: 
  • Cytoplasmic dilysine motifs on transmembrane proteins are captured by coatomer α-COP and β'-COP subunits and packaged into COPI-coated vesicles for Golgi-to-ER retrieval. Numerous ER/Golgi proteins contain K(x)Kxx motifs, but the rules for their reco ...

    Cytoplasmic dilysine motifs on transmembrane proteins are captured by coatomer α-COP and β'-COP subunits and packaged into COPI-coated vesicles for Golgi-to-ER retrieval. Numerous ER/Golgi proteins contain K(x)Kxx motifs, but the rules for their recognition are unclear. We present crystal structures of α-COP and β'-COP bound to a series of naturally occurring retrieval motifs-encompassing KKxx, KxKxx and non-canonical RKxx and viral KxHxx sequences. Binding experiments show that α-COP and β'-COP have generally the same specificity for KKxx and KxKxx, but only β'-COP recognizes the RKxx signal. Dilysine motif recognition involves lysine side-chain interactions with two acidic patches. Surprisingly, however, KKxx and KxKxx motifs bind differently, with their lysine residues transposed at the binding patches. We derive rules for retrieval motif recognition from key structural features: the reversed binding modes, the recognition of the C-terminal carboxylate group which enforces lysine positional context, and the tolerance of the acidic patches for non-lysine residues.


    Organizational Affiliation

    Memorial Sloan-Kettering Cancer Center, Howard Hughes Medical Institute and the Structural Biology Program, New York, NY, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
coatomer subunit alpha
A
327Schizosaccharomyces pombe (strain 972 / ATCC 24843)N/A
Find proteins for Q96WV5 (Schizosaccharomyces pombe (strain 972 / ATCC 24843))
Go to UniProtKB:  Q96WV5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.67 Å
  • R-Value Free: 0.192 
  • R-Value Work: 0.167 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 37.432α = 90.00
b = 53.614β = 90.00
c = 157.961γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2013-02-14 
  • Released Date: 2013-03-27 
  • Deposition Author(s): Ma, W., Goldberg, J.

Revision History 

  • Version 1.0: 2013-03-27
    Type: Initial release
  • Version 1.1: 2013-04-17
    Type: Database references