2ASQ

Solution Structure of SUMO-1 in Complex with a SUMO-binding Motif (SBM)


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 10 
  • Conformers Submitted: 10 
  • Selection Criteria: all calculated structures submitted 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Small Ubiquitin-like Modifier (SUMO) Recognition of a SUMO Binding Motif: A reversal of the bound orientation

Song, J.Zhang, Z.Hu, W.Chen, Y.

(2005) J.Biol.Chem. 280: 40122-40129

  • DOI: 10.1074/jbc.M507059200

  • PubMed Abstract: 
  • Sumoylation has recently been identified as an important mechanism that regulates protein interactions and localization in essential cellular functions, such as gene transcription, subnuclear structure formation, viral infection, and cell cycle progr ...

    Sumoylation has recently been identified as an important mechanism that regulates protein interactions and localization in essential cellular functions, such as gene transcription, subnuclear structure formation, viral infection, and cell cycle progression. A SUMO binding amino acid sequence motif (SBM), which recognizes the SUMO moiety of modified proteins in sumoylation-dependent cellular functions, has been consistently identified by several recent studies. To understand the mechanism of SUMO recognition by the SBM, we have solved the solution structure of SUMO-1 in complex with a peptide containing the SBM derived from the protein PIASX (KVDVIDLTIESSSDEEEDPPAKR). Surprisingly, the structure reveals that the bound orientation of the SBM can reverse depending on the sequence context. The structure also reveals a novel mechanism of recognizing target sequences by a ubiquitin-like module. Unlike ubiquitin binding motifs, which all form helices and bind to the main beta-sheet of ubiquitin, the SBM forms an extended structure that binds between the alpha-helix and a beta-strand of SUMO-1. This study provides a clear mechanism of the SBM sequence variations and its recognition of the SUMO moiety in sumoylated proteins.


    Organizational Affiliation

    Division of Immunology and Graduate School of Biological Sciences, Beckman Research Institute of the City of Hope, Duarte, California 91010, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Small ubiquitin-related modifier 1
A
97Homo sapiensMutation(s): 0 
Gene Names: SUMO1 (SMT3C, SMT3H3, UBL1)
Find proteins for P63165 (Homo sapiens)
Go to Gene View: SUMO1
Go to UniProtKB:  P63165
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Protein inhibitor of activated STAT2
B
25Homo sapiensMutation(s): 0 
Gene Names: PIAS2 (PIASX)
EC: 2.3.2.-
Find proteins for O75928 (Homo sapiens)
Go to Gene View: PIAS2
Go to UniProtKB:  O75928
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 10 
  • Conformers Submitted: 10 
  • Selection Criteria: all calculated structures submitted 
  • Olderado: 2ASQ Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-10-11
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance