4FIP

Structure of the SAGA Ubp8(S144N)/Sgf11(1-72, Delta-ZnF)/Sus1/Sgf73 DUB module


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.686 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.183 

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:  

  • 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 ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin carboxyl-terminal hydrolase 8
A, E
476Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 1 
Gene Names: UBP8
EC: 3.4.19.12
Find proteins for P50102 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P50102
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Protein SUS1
B, F
96Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: SUS1
Find proteins for Q6WNK7 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  Q6WNK7
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
SAGA-associated factor 11
C, G
72Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: SGF11
Find proteins for Q03067 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  Q03067
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
SAGA-associated factor 73
D, H
96Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: SGF73
Find proteins for P53165 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P53165
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, D, E, H
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.686 Å
  • R-Value Free: 0.264 
  • R-Value Work: 0.183 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 75.973α = 90.00
b = 79.975β = 90.00
c = 274.259γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
HKL-2000data scaling
Locallydata collection
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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