4Y1H

Crystal structure of K33 linked tri-Ubiquitin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.158 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Assembly and structure of Lys33-linked polyubiquitin reveals distinct conformations.

Kristariyanto, Y.A.Choi, S.Y.Rehman, S.A.Ritorto, M.S.Campbell, D.G.Morrice, N.A.Toth, R.Kulathu, Y.

(2015) Biochem.J. 467: 345-352

  • DOI: 10.1042/BJ20141502
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Ubiquitylation regulates a multitude of biological processes and this versatility stems from the ability of ubiquitin (Ub) to form topologically different polymers of eight different linkage types. Whereas some linkages have been studied in detail, o ...

    Ubiquitylation regulates a multitude of biological processes and this versatility stems from the ability of ubiquitin (Ub) to form topologically different polymers of eight different linkage types. Whereas some linkages have been studied in detail, other linkage types including Lys33-linked polyUb are poorly understood. In the present study, we identify an enzymatic system for the large-scale assembly of Lys33 chains by combining the HECT (homologous to the E6-AP C-terminus) E3 ligase AREL1 (apoptosis-resistant E3 Ub protein ligase 1) with linkage selective deubiquitinases (DUBs). Moreover, this first characterization of the chain selectivity of AREL1 indicates its preference for assembling Lys33- and Lys11-linked Ub chains. Intriguingly, the crystal structure of Lys33-linked diUb reveals that it adopts a compact conformation very similar to that observed for Lys11-linked diUb. In contrast, crystallographic analysis of Lys33-linked triUb reveals a more extended conformation. These two distinct conformational states of Lys33-linked polyUb may be selectively recognized by Ub-binding domains (UBD) and enzymes of the Ub system. Importantly, our work provides a method to assemble Lys33-linked polyUb that will allow further characterization of this atypical chain type.


    Organizational Affiliation

    *MRC Protein Phosphorylation and Ubiquitylation Unit, College of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, U.K.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin-40S ribosomal protein S27a
A
76Bos taurusMutation(s): 0 
Gene Names: RPS27A (UBA80, UBCEP1)
Find proteins for P62992 (Bos taurus)
Go to Gene View: RPS27A
Go to UniProtKB:  P62992
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EDO
Query on EDO

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.4 Å
  • R-Value Free: 0.194 
  • R-Value Work: 0.158 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 28.938α = 90.00
b = 41.831β = 90.00
c = 47.602γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
PHASERphasing
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-03-18
    Type: Initial release
  • Version 1.1: 2015-04-15
    Type: Database references
  • Version 1.2: 2019-05-08
    Type: Advisory, Data collection, Derived calculations