5YT6

Crystal structure of TAX1BP1 UBZ2 in complex with mono-ubiquitin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.501 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Mechanistic Insights into Recognitions of Ubiquitin and Myosin VI by Autophagy Receptor TAX1BP1.

Hu, S.Wang, Y.Gong, Y.Liu, J.Li, Y.Pan, L.

(2018) J. Mol. Biol. 430: 3283-3296

  • DOI: 10.1016/j.jmb.2018.06.030

  • PubMed Abstract: 
  • TAX1BP1, a ubiquitin-binding adaptor, plays critical roles in the innate immunity and selective autophagy. During autophagy, TAX1BP1 may not only function as an autophagy receptor to recruit ubiquitylated substrates for autophagic degradation, but al ...

    TAX1BP1, a ubiquitin-binding adaptor, plays critical roles in the innate immunity and selective autophagy. During autophagy, TAX1BP1 may not only function as an autophagy receptor to recruit ubiquitylated substrates for autophagic degradation, but also serve as a Myosin VI cargo adaptor protein for mediating the maturation of autophagosome. However, the mechanistic basis underlying the specific interactions of TAX1BP1 with ubiquitin and Myosin VI remains elusive. Here, using biochemical, NMR and structural analyses, we elucidate the detailed binding mechanism and uncover the key determinants for the interaction between TAX1BP1 and ubiquitin. In addition, we reveal that both tandem zinc-fingers of TAX1BP1 and the conformational rigidity between them are required for the Myosin VI binding of TAX1BP1, and ubiquitin and Myosin VI are mutually exclusive in binding to TAX1BP1. Collectively, our findings provide mechanistic insights into the dual functions of TAX1BP1 in selective autophagy.


    Organizational Affiliation

    State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin
E, A, C, G
78Homo sapiensMutation(s): 0 
Gene Names: UBB
Find proteins for P0CG47 (Homo sapiens)
Go to Gene View: UBB
Go to UniProtKB:  P0CG47
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Tax1-binding protein 1
F, B, D, H
35Homo sapiensMutation(s): 0 
Gene Names: TAX1BP1 (T6BP)
Find proteins for Q86VP1 (Homo sapiens)
Go to Gene View: TAX1BP1
Go to UniProtKB:  Q86VP1
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
B, D, F, H
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, D
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download SDF File 
Download CCD File 
G
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

Download SDF File 
Download CCD File 
H
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.501 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.193 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 48.709α = 90.00
b = 72.938β = 90.00
c = 119.879γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
HKL-2000data scaling
HKL-2000data reduction
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2017-11-17 
  • Released Date: 2018-07-11 
  • Deposition Author(s): Pan, L., Hu, S.

Funding OrganizationLocationGrant Number
National Natural Science Foundation of ChinaChina31470749
National Key R&D Program of ChinaChina2016YFA0501903

Revision History 

  • Version 1.0: 2018-07-11
    Type: Initial release
  • Version 1.1: 2018-09-05
    Type: Data collection, Database references