6V7S

Crystal structure of K37-acetylated SUMO1 in complex with phosphorylated PIAS-SIM2

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.47 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.172 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history. 


Literature

Characterization of a C-Terminal SUMO-Interacting Motif Present in Select PIAS-Family Proteins.

Lussier-Price, M., Mascle, X.H., Cappadocia, L., Kamada, R., Sakaguchi, K., Wahba, H.M., Omichinski, J.G.

(2020) Structure 28: 573-585.e5

  • DOI: 10.1016/j.str.2020.04.002
  • Primary Citation of Related Structures:  
    6V7P, 6V7Q, 6V7R, 6V7S

  • PubMed Abstract: 

    • The human PIAS proteins are small ubiquitin-like modifier (SUMO) E3 ligases that participate in important cellular functions. Several of these functions depend on a conserved SUMO-interacting motif (SIM) located in the central region of all PIAS proteins (SIM1) ...

    The human PIAS proteins are small ubiquitin-like modifier (SUMO) E3 ligases that participate in important cellular functions. Several of these functions depend on a conserved SUMO-interacting motif (SIM) located in the central region of all PIAS proteins (SIM1). Recently, it was determined that Siz2, a yeast homolog of PIAS proteins, possesses a second SIM at its C terminus (SIM2). Sequence alignment indicates that a SIM2 is also present in PIAS1-3, but not PIAS4. Using biochemical and structural studies, we demonstrate PIAS-SIM2 binds to SUMO1, but that phosphorylation of the PIAS-SIM2 or acetylation of SUMO1 alter this interaction in a manner distinct from what is observed for the PIAS-SIM1. We also show that the PIAS-SIM2 plays a key role in formation of a UBC9-PIAS1-SUMO1 complex. These results provide insights into how post-translational modifications selectively regulate the specificity of multiple SIMs found in the PIAS proteins by exploiting the plasticity built into the SUMO-SIM binding interface.

    Organizational Affiliation: 

    Département de Biochimie et Médicine Moléculaire, Université de Montréal, C.P. 6128 Succursale Centre-Ville, Montréal, QC H3C 3J7, Canada. Electronic address: jg.omichinski@umontreal.ca.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Small ubiquitin-related modifier 1C [auth A],
A [auth C]		83Homo sapiensMutation(s): 1 
Gene Names: SUMO1, SMT3C, SMT3H3, UBL1, OK/SW-cl.43
UniProt & NIH Common Fund Data Resources
Find proteins for P63165 (Homo sapiens)
Explore P63165 
Go to UniProtKB:  P63165
PHAROS:  P63165
GTEx:  ENSG00000116030 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP63165
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Protein PIASD [auth B],
B [auth D]		13Homo sapiensMutation(s): 0 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
ALY
Query on ALY		A [auth C],
C [auth A]		L-PEPTIDE LINKINGC8 H16 N2 O3LYS
SEP
Query on SEP		B [auth D],
D [auth B]		L-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.47 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.172 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 38.294α = 90
b = 38.457β = 90
c = 120.947γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Canadian Institutes of Health ResearchCanada74739
Canadian Institutes of Health ResearchCanada130414

Revision History  (Full details and data files)

  • Version 1.0: 2020-04-01
    Type: Initial release
  • Version 1.1: 2020-05-27
    Changes: Database references