4DDI

Crystal structure of human OTUB1/UbcH5b~Ub/Ub


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.802 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.218 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

OTUB1 Co-opts Lys48-Linked Ubiquitin Recognition to Suppress E2 Enzyme Function.

Juang, Y.C.Landry, M.C.Sanches, M.Vittal, V.Leung, C.C.Ceccarelli, D.F.Mateo, A.R.Pruneda, J.N.Mao, D.Y.Szilard, R.K.Orlicky, S.Munro, M.Brzovic, P.S.Klevit, R.E.Sicheri, F.Durocher, D.

(2012) Mol.Cell 45: 384-397

  • DOI: 10.1016/j.molcel.2012.01.011
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Ubiquitylation entails the concerted action of E1, E2, and E3 enzymes. We recently reported that OTUB1, a deubiquitylase, inhibits the DNA damage response independently of its isopeptidase activity. OTUB1 does so by blocking ubiquitin transfer by UBC ...

    Ubiquitylation entails the concerted action of E1, E2, and E3 enzymes. We recently reported that OTUB1, a deubiquitylase, inhibits the DNA damage response independently of its isopeptidase activity. OTUB1 does so by blocking ubiquitin transfer by UBC13, the cognate E2 enzyme for RNF168. OTUB1 also inhibits E2s of the UBE2D and UBE2E families. Here we elucidate the structural mechanism by which OTUB1 binds E2s to inhibit ubiquitin transfer. OTUB1 recognizes ubiquitin-charged E2s through contacts with both donor ubiquitin and the E2 enzyme. Surprisingly, free ubiquitin associates with the canonical distal ubiquitin-binding site on OTUB1 to promote formation of the inhibited E2 complex. Lys48 of donor ubiquitin lies near the OTUB1 catalytic site and the C terminus of free ubiquitin, a configuration that mimics the products of Lys48-linked ubiquitin chain cleavage. OTUB1 therefore co-opts Lys48-linked ubiquitin chain recognition to suppress ubiquitin conjugation and the DNA damage response.


    Organizational Affiliation

    Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, ON M5G 1X5, Canada.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin-conjugating enzyme E2 D2, Ubiquitin thioesterase OTUB1
A, B, C
399Homo sapiensMutation(s): 0 
Gene Names: OTUB1 (OTB1, OTU1), UBE2D2 (PUBC1, UBC4, UBC5B, UBCH4, UBCH5B)
EC: 3.4.19.12 2.3.2.23
Find proteins for Q96FW1 (Homo sapiens)
Go to Gene View: OTUB1
Go to UniProtKB:  Q96FW1
Find proteins for P62837 (Homo sapiens)
Go to Gene View: UBE2D2
Go to UniProtKB:  P62837
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Polyubiquitin-C
D, E, F, G, H, I
76Homo sapiensMutation(s): 0 
Gene Names: UBC
Find proteins for P0CG48 (Homo sapiens)
Go to Gene View: UBC
Go to UniProtKB:  P0CG48
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.802 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.218 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 173.739α = 90.00
b = 106.225β = 123.74
c = 134.689γ = 90.00
Software Package:
Software NamePurpose
XDSdata scaling
ADSCdata collection
PHENIXrefinement
XDSdata reduction
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2012-02-22
    Type: Initial release
  • Version 1.1: 2012-05-23
    Type: Other
  • Version 1.2: 2017-08-02
    Type: Source and taxonomy
  • Version 1.3: 2017-11-15
    Type: Refinement description