5YP7

p62/SQSTM1 ZZ domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.424 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.187 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Insights into degradation mechanism of N-end rule substrates by p62/SQSTM1 autophagy adapter.

Kwon, D.H.Park, O.H.Kim, L.Jung, Y.O.Park, Y.Jeong, H.Hyun, J.Kim, Y.K.Song, H.K.

(2018) Nat Commun 9: 3291-3291

  • DOI: 10.1038/s41467-018-05825-x
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • p62/SQSTM1 is the key autophagy adapter protein and the hub of multi-cellular signaling. It was recently reported that autophagy and N-end rule pathways are linked via p62. However, the exact recognition mode of degrading substrates and regulation of ...

    p62/SQSTM1 is the key autophagy adapter protein and the hub of multi-cellular signaling. It was recently reported that autophagy and N-end rule pathways are linked via p62. However, the exact recognition mode of degrading substrates and regulation of p62 in the autophagic pathway remain unknown. Here, we present the complex structures between the ZZ-domain of p62 and various type-1 and type-2 N-degrons. The binding mode employed in the interaction of the ZZ-domain with N-degrons differs from that employed by classic N-recognins. It was also determined that oligomerization via the PB1 domain can control functional affinity to the R-BiP substrate. Unexpectedly, we found that self-oligomerization and disassembly of p62 are pH-dependent. These findings broaden our understanding of the functional repertoire of the N-end rule pathway and provide an insight into the regulation of p62 during the autophagic pathway.


    Organizational Affiliation

    Department of Life Sciences, Korea University, Seoul, 02841, Korea.,Electron Microscopy Research Center, Korea Basic Science Institute, Chungcheongbuk-do, 28119, Korea.,Department of Life Sciences, Korea University, Seoul, 02841, Korea. hksong@korea.ac.kr.,Creative Research Initiatives, Center for Molecular Biology of Translation, Korea University, Seoul, 02841, Korea.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Sequestosome-1
A, D
55Homo sapiensMutation(s): 0 
Gene Names: SQSTM1 (ORCA, OSIL)
Find proteins for Q13501 (Homo sapiens)
Go to Gene View: SQSTM1
Go to UniProtKB:  Q13501
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.424 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.187 
  • Space Group: P 2 21 21
Unit Cell:
Length (Å)Angle (°)
a = 34.749α = 90.00
b = 43.345β = 90.00
c = 54.070γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
PHASERphasing
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-08-29
    Type: Initial release
  • Version 1.1: 2018-10-03
    Type: Data collection, Structure summary