2MXP

Solution structure of NDP52 ubiquitin-binding zinc finger


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Molecular basis of ubiquitin recognition by the autophagy receptor CALCOCO2

Xie, X.Li, F.Wang, Y.Wang, Y.Lin, Z.Cheng, X.Liu, J.Chen, C.Pan, L.

(2015) Autophagy 11: 1775-1789

  • DOI: 10.1080/15548627.2015.1082025
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The autophagy receptor CALCOCO2/NDP52 functions as a bridging adaptor and plays an essential role in the selective autophagic degradation of invading pathogens by specifically recognizing ubiquitin-coated intracellular pathogens and subsequently targ ...

    The autophagy receptor CALCOCO2/NDP52 functions as a bridging adaptor and plays an essential role in the selective autophagic degradation of invading pathogens by specifically recognizing ubiquitin-coated intracellular pathogens and subsequently targeting them to the autophagic machinery; thereby it is required for innate immune defense against a range of infectious pathogens in mammals. However, the mechanistic basis underlying CALCOCO2-mediated specific recognition of ubiqutinated pathogens is still unknown. Here, using biochemical and structural analyses, we demonstrated that the cargo-binding region of CALCOCO2 contains a dynamic unconventional zinc finger as well as a C2H2-type zinc-finger, and only the C2H2-type zinc finger specifically recognizes mono-ubiquitin or poly-ubiquitin chains. In addition to elucidating the specific ubiquitin recognition mechanism of CALCOCO2, the structure of the CALCOCO2 C2H2-type zinc finger in complex with mono-ubiquitin also uncovers a unique zinc finger-binding mode for ubiquitin. Our findings provide mechanistic insight into how CALCOCO2 targets ubiquitin-decorated pathogens for autophagic degradations.


    Organizational Affiliation

    a State Key Laboratory of Bioorganic and Natural Products Chemistry.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Calcium-binding and coiled-coil domain-containing protein 2
A
33Homo sapiensMutation(s): 0 
Gene Names: CALCOCO2 (NDP52)
Find proteins for Q13137 (Homo sapiens)
Go to Gene View: CALCOCO2
Go to UniProtKB:  Q13137
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2015-01-12 
  • Released Date: 2015-11-11 
  • Deposition Author(s): Pan, L., Xie, X.

Revision History 

  • Version 1.0: 2015-11-11
    Type: Initial release