4FK5

Structure of the SAGA Ubp8(S144N)/Sgf11/Sus1/Sgf73 DUB module


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.03 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.177 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

A Role for Intersubunit Interactions in Maintaining SAGA Deubiquitinating Module Structure and Activity.

Samara, N.L.Ringel, A.E.Wolberger, C.

(2012) Structure 20: 1414-1424

  • DOI: 10.1016/j.str.2012.05.015
  • Primary Citation of Related Structures:  
    4FIP, 4FJC, 4FK5

  • PubMed Abstract: 
  • The deubiquitinating module (DUBm) of the SAGA coactivator contains the Ubp8 isopeptidase, Sgf11, Sus1, and Sgf73, which form a highly interconnected complex. Although Ubp8 contains a canonical USP catalytic domain, it is only active when in complex with the other DUBm subunits ...

    The deubiquitinating module (DUBm) of the SAGA coactivator contains the Ubp8 isopeptidase, Sgf11, Sus1, and Sgf73, which form a highly interconnected complex. Although Ubp8 contains a canonical USP catalytic domain, it is only active when in complex with the other DUBm subunits. The Sgf11 zinc finger (Sgf11-ZnF) binds near the Ubp8 active site and is essential for full activity, suggesting that the Sgf11-ZnF helps maintain the active conformation of Ubp8. We report structural and solution studies showing that deletion of the Sgf11-ZnF destabilizes incorporation of Ubp8 within the DUBm, giving rise to domain swapping with a second complex and misaligning active site residues. Activating mutations in Ubp8 that partially restore activity in the absence of the Sgf11-ZnF promote the monomeric form of the DUBm. Our data suggest an unexpected role for Sgf11 in compensating for the absence of structural features that maintain the active conformation of Ubp8.


    Organizational Affiliation

    Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, 725 N. Wolfe Street, Baltimore, MD 21205-2185, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ubiquitin carboxyl-terminal hydrolase 8A476Saccharomyces cerevisiae S288CMutation(s): 1 
Gene Names: UBP8YM9959.05YMR223W
EC: 3.4.19.12
UniProt
Find proteins for P50102 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P50102 
Go to UniProtKB:  P50102
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP50102
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Protein SUS1B96Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SUS1YBR111W-A
UniProt
Find proteins for Q6WNK7 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q6WNK7 
Go to UniProtKB:  Q6WNK7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ6WNK7
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
SAGA-associated factor 11C99Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SGF11YPL047W
UniProt
Find proteins for Q03067 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore Q03067 
Go to UniProtKB:  Q03067
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ03067
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
SAGA-associated factor 73D [auth E]96Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: SGF73YGL066W
UniProt
Find proteins for P53165 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P53165 
Go to UniProtKB:  P53165
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP53165
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.03 Å
  • R-Value Free: 0.212 
  • R-Value Work: 0.175 
  • R-Value Observed: 0.177 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 83.528α = 90
b = 104.775β = 90
c = 107.018γ = 90
Software Package:
Software NamePurpose
Locallydata collection
MOLREPphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-07-25
    Type: Initial release
  • Version 1.1: 2012-08-29
    Changes: Database references