3SHQ

Crystal Structure of UBLCP1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

UBLCP1 is a 26S proteasome phosphatase that regulates nuclear proteasome activity.

Guo, X.Engel, J.L.Xiao, J.Tagliabracci, V.S.Wang, X.Huang, L.Dixon, J.E.

(2011) Proc Natl Acad Sci U S A 108: 18649-18654

  • DOI: 10.1073/pnas.1113170108
  • Primary Citation of Related Structures:  
    3SHQ

  • PubMed Abstract: 
  • Protein degradation by the 26S proteasome is a fundamental process involved in a broad range of cellular activities, yet how proteasome activity is regulated remains poorly understood. We report here that ubiquitin-like domain-containing C-terminal domain phosphatase 1 (UBLCP1) is a 26S proteasome phosphatase that regulates nuclear proteasome activity ...

    Protein degradation by the 26S proteasome is a fundamental process involved in a broad range of cellular activities, yet how proteasome activity is regulated remains poorly understood. We report here that ubiquitin-like domain-containing C-terminal domain phosphatase 1 (UBLCP1) is a 26S proteasome phosphatase that regulates nuclear proteasome activity. UBLCP1 directly interacts with the proteasome via its UBL domain and is exclusively localized in the nucleus. UBLCP1 dephosphorylates the 26S proteasome and inhibits proteasome activity in vitro. Knockdown of UBLCP1 in cells promotes 26S proteasome assembly and selectively enhances nuclear proteasome activity. Our results describe the first identified proteasome-specific phosphatase and uncover a unique mechanism for phosphoregulation of the proteasome.


    Organizational Affiliation

    Department of Pharmacology, University of California-San Diego, La Jolla, CA 92093-0721, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
UBLCP1A320Drosophila melanogasterMutation(s): 1 
Gene Names: CG6697Dmel_CG6697UBLCP1Ublcp14972728BcDNA:LD21504Dmel\CG6697DmUBLCP1
EC: 3.1.3.16
Find proteins for Q9XZ16 (Drosophila melanogaster)
Explore Q9XZ16 
Go to UniProtKB:  Q9XZ16
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download Ideal Coordinates CCD File 
B [auth A]MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.207 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 101.813α = 90
b = 101.813β = 90
c = 90.936γ = 90
Software Package:
Software NamePurpose
SCALEPACKdata scaling
SOLVEphasing
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 2011-06-16 
  • Released Date: 2011-10-12 
  • Deposition Author(s): Xiao, J., Engel, J.L.

Revision History  (Full details and data files)

  • Version 1.0: 2011-10-12
    Type: Initial release
  • Version 1.1: 2011-11-30
    Changes: Database references