3ZNX

Crystal structure of the OTU domain of OTULIN D336A mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.159 
  • R-Value Work: 0.122 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Otulin Antagonizes Lubac Signaling by Specifically Hydrolyzing met1-Linked Polyubiquitin.

Keusekotten, K.Elliott, P.R.Glockner, L.Fiil, B.K.Damgaard, R.B.Kulathu, Y.Wauer, T.Hospenthal, M.K.Gyrd-Hansen, M.Krappmann, D.Hofmann, K.Komander, D.

(2013) Cell 153: 1312

  • DOI: 10.1016/j.cell.2013.05.014
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The linear ubiquitin (Ub) chain assembly complex (LUBAC) is an E3 ligase that specifically assembles Met1-linked (also known as linear) Ub chains that regulate nuclear factor κB (NF-κB) signaling. Deubiquitinases (DUBs) are key regulators of Ub signa ...

    The linear ubiquitin (Ub) chain assembly complex (LUBAC) is an E3 ligase that specifically assembles Met1-linked (also known as linear) Ub chains that regulate nuclear factor κB (NF-κB) signaling. Deubiquitinases (DUBs) are key regulators of Ub signaling, but a dedicated DUB for Met1 linkages has not been identified. Here, we reveal a previously unannotated human DUB, OTULIN (also known as FAM105B), which is exquisitely specific for Met1 linkages. Crystal structures of the OTULIN catalytic domain in complex with diubiquitin reveal Met1-specific Ub-binding sites and a mechanism of substrate-assisted catalysis in which the proximal Ub activates the catalytic triad of the protease. Mutation of Ub Glu16 inhibits OTULIN activity by reducing kcat 240-fold. OTULIN overexpression or knockdown affects NF-κB responses to LUBAC, TNFα, and poly(I:C) and sensitizes cells to TNFα-induced cell death. We show that OTULIN binds LUBAC and that overexpression of OTULIN prevents TNFα-induced NEMO association with ubiquitinated RIPK1. Our data suggest that OTULIN regulates Met1-polyUb signaling.


    Organizational Affiliation

    Medical Research Council Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge, CB2 0QH, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN FAM105B
A
275Homo sapiensMutation(s): 1 
Gene Names: OTULIN (FAM105B)
EC: 3.4.19.12
Find proteins for Q96BN8 (Homo sapiens)
Go to Gene View: OTULIN
Go to UniProtKB:  Q96BN8
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
GOL
Query on GOL

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

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.159 
  • R-Value Work: 0.122 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 43.807α = 90.00
b = 72.197β = 90.00
c = 94.843γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-06-26
    Type: Initial release