1Y8Q

SUMO E1 ACTIVATING ENZYME SAE1-SAE2-MG-ATP COMPLEX

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.208 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

Structures of the SUMO E1 provide mechanistic insights into SUMO activation and E2 recruitment to E1

Lois, L.M., Lima, C.D.

(2005) EMBO J 24: 439-451

  • DOI: 10.1038/sj.emboj.7600552
  • Primary Citation of Related Structures:  
    1Y8R, 1Y8Q

  • PubMed Abstract: 

    • E1 enzymes facilitate conjugation of ubiquitin and ubiquitin-like proteins through adenylation, thioester transfer within E1, and thioester transfer from E1 to E2 conjugating proteins. Structures of human heterodimeric Sae1/Sae2-Mg.ATP and Sae1/Sae2-SUMO-1-Mg ...

    E1 enzymes facilitate conjugation of ubiquitin and ubiquitin-like proteins through adenylation, thioester transfer within E1, and thioester transfer from E1 to E2 conjugating proteins. Structures of human heterodimeric Sae1/Sae2-Mg.ATP and Sae1/Sae2-SUMO-1-Mg.ATP complexes were determined at 2.2 and 2.75 A resolution, respectively. Despite the presence of Mg.ATP, the Sae1/Sae2-SUMO-1-Mg.ATP structure reveals a substrate complex insomuch as the SUMO C-terminus remains unmodified within the adenylation site and 35 A from the catalytic cysteine, suggesting that additional changes within the adenylation site may be required to facilitate chemistry prior to adenylation and thioester transfer. A mechanism for E2 recruitment to E1 is suggested by biochemical and genetic data, each of which supports a direct role for the E1 C-terminal ubiquitin-like domain for E2 recruitment during conjugation.

    Organizational Affiliation: 

    Structural Biology Program, Sloan-Kettering Institute, New York, NY 10021, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ubiquitin-like 1 activating enzyme E1A A, C346Homo sapiensMutation(s): 0 
Gene Names: UBLE1A, SAE1, AOS1, SUA1
Find proteins for Q9UBE0 (Homo sapiens)
Explore Q9UBE0 
Go to UniProtKB:  Q9UBE0
NIH Common Fund Data Resources
PHAROS:  Q9UBE0
GTEx:  ENSG00000142230
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Ubiquitin-like 2 activating enzyme E1B B, D640Homo sapiensMutation(s): 1 
Gene Names: UBLE1B, SAE2, UBA2, HRIHFB2115
EC: 2.3.2
Find proteins for Q9UBT2 (Homo sapiens)
Explore Q9UBT2 
Go to UniProtKB:  Q9UBT2
NIH Common Fund Data Resources
PHAROS:  Q9UBT2
GTEx:  ENSG00000126261
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.248 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.208 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 101.245α = 90
b = 116.667β = 112.67
c = 106.078γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing
CNSrefinement

Structure Validation

View Full Validation Report


View more in-depth experimental data

Entry History 

Deposition Data

  • Deposited Date: 2004-12-13 
  • Released Date: 2005-01-25 
    • Deposition Author(s): Lois, L.M., Lima, C.D.

Revision History  (Full details and data files)

  • Version 1.0: 2005-01-25
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance