1Z5S

Crystal structure of a complex between UBC9, SUMO-1, RANGAP1 and NUP358/RANBP2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.01 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.247 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Insights into E3 ligase activity revealed by a SUMO-RanGAP1-Ubc9-Nup358 complex.

Reverter, D.Lima, C.D.

(2005) Nature 435: 687-692

  • DOI: 10.1038/nature03588

  • PubMed Abstract: 
  • SUMO-1 (for small ubiquitin-related modifier) belongs to the ubiquitin (Ub) and ubiquitin-like (Ubl) protein family. SUMO conjugation occurs on specific lysine residues within protein targets, regulating pathways involved in differentiation, apoptosi ...

    SUMO-1 (for small ubiquitin-related modifier) belongs to the ubiquitin (Ub) and ubiquitin-like (Ubl) protein family. SUMO conjugation occurs on specific lysine residues within protein targets, regulating pathways involved in differentiation, apoptosis, the cell cycle and responses to stress by altering protein function through changes in activity or cellular localization or by protecting substrates from ubiquitination. Ub/Ubl conjugation occurs in sequential steps and requires the concerted action of E2 conjugating proteins and E3 ligases. In addition to being a SUMO E3, the nucleoporin Nup358/RanBP2 localizes SUMO-conjugated RanGAP1 to the cytoplasmic face of the nuclear pore complex by means of interactions in a complex that also includes Ubc9, the SUMO E2 conjugating protein. Here we describe the 3.0-A crystal structure of a four-protein complex of Ubc9, a Nup358/RanBP2 E3 ligase domain (IR1-M) and SUMO-1 conjugated to the carboxy-terminal domain of RanGAP1. Structural insights, combined with biochemical and kinetic data obtained with additional substrates, support a model in which Nup358/RanBP2 acts as an E3 by binding both SUMO and Ubc9 to position the SUMO-E2-thioester in an optimal orientation to enhance conjugation.


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin-conjugating enzyme E2 I
A
158Homo sapiensGene Names: UBE2I (UBC9, UBCE9)
EC: 2.3.2.-
Find proteins for P63279 (Homo sapiens)
Go to Gene View: UBE2I
Go to UniProtKB:  P63279
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin-like protein SMT3C
B
82Homo sapiensGene Names: SUMO1 (SMT3C, SMT3H3, UBL1)
Find proteins for P63165 (Homo sapiens)
Go to Gene View: SUMO1
Go to UniProtKB:  P63165
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Ran GTPase-activating protein 1
C
172Homo sapiensGene Names: RANGAP1 (KIAA1835, SD)
Find proteins for P46060 (Homo sapiens)
Go to Gene View: RANGAP1
Go to UniProtKB:  P46060
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetails
Ran-binding protein 2
D
83Homo sapiensGene Names: RANBP2 (NUP358)
EC: 2.3.2.-
Find proteins for P49792 (Homo sapiens)
Go to Gene View: RANBP2
Go to UniProtKB:  P49792
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.01 Å
  • R-Value Free: 0.290 
  • R-Value Work: 0.247 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 157.123α = 90.00
b = 157.123β = 90.00
c = 59.613γ = 120.00
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
CNSrefinement
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-06-07
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance