5YT6

Crystal structure of TAX1BP1 UBZ2 in complex with mono-ubiquitin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 

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
  • Primary Citation of Related Structures:  
    5YT6

  • 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 also s ...

    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; Collaborative Innovation Center of Chemistry for Life Sciences, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China. Electronic address: panlf@sioc.ac.cn.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ubiquitin ACEG78Homo sapiensMutation(s): 0 
Gene Names: UBB
Find proteins for P0CG47 (Homo sapiens)
Explore P0CG47 
Go to UniProtKB:  P0CG47
NIH Common Fund Data Resources
PHAROS:  P0CG47
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Tax1-binding protein 1 BDFH35Homo sapiensMutation(s): 0 
Gene Names: TAX1BP1T6BPPRO0105
Find proteins for Q86VP1 (Homo sapiens)
Explore Q86VP1 
Go to UniProtKB:  Q86VP1
NIH Common Fund Data Resources
PHAROS:  Q86VP1
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.50 Å
  • R-Value Free: 0.225 
  • R-Value Work: 0.193 
  • R-Value Observed: 0.195 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 48.709α = 90
b = 72.938β = 90
c = 119.879γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data scaling
PDB_EXTRACTdata extraction
HKL-2000data reduction
PHASERphasing

Structure Validation

View Full Validation Report



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
    Changes: Data collection, Database references