5X0W

Molecular mechanism for the binding between Sharpin and HOIP

  • Classification: LIGASE/PROTEIN BINDING
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli

  • Deposited: 2017-01-23 Released: 2017-10-18 
  • Deposition Author(s): Liu, J., Li, F., Cheng, X., Pan, L.
  • Funding Organization(s): National Basic Research Program of China; Science and Technology Commission of Shanghai Municipality; Strategic Priority Research Program of the Chinese Academy of Sciences; National Natural Science Foundation of China 

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.261 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structural Insights into SHARPIN-Mediated Activation of HOIP for the Linear Ubiquitin Chain Assembly

Liu, J.Wang, Y.Gong, Y.Fu, T.Hu, S.Zhou, Z.Pan, L.

(2017) Cell Rep 21: 27-36

  • DOI: 10.1016/j.celrep.2017.09.031

  • PubMed Abstract: 
  • The linear ubiquitin chain assembly complex (LUBAC) is the sole identified E3 ligase complex that catalyzes the formation of linear ubiquitin chain, and it is composed of HOIP, HOIL-1L, and SHARPIN. The E3 activity of HOIP can be effectively activate ...

    The linear ubiquitin chain assembly complex (LUBAC) is the sole identified E3 ligase complex that catalyzes the formation of linear ubiquitin chain, and it is composed of HOIP, HOIL-1L, and SHARPIN. The E3 activity of HOIP can be effectively activated by HOIL-1L or SHARPIN, deficiency of which leads to severe immune system disorders. However, the underlying mechanism governing the HOIP-SHARPIN interaction and the SHARPIN-mediated activation of HOIP remains elusive. Here, we biochemically and structurally demonstrate that the UBL domain of SHARPIN specifically binds to the UBA domain of HOIP and thereby associates with and activates HOIP. We further uncover that SHARPIN and HOIL-1L can separately or synergistically bind to distinct sites of HOIP UBA with induced allosteric effects and thereby facilitate the E2 loading of HOIP for its activation. Thus, our findings provide mechanistic insights into the assembly and activation of LUBAC.


    Organizational Affiliation

    State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People's Republic of China. Electronic address: panlf@sioc.ac.cn.,State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, People's Republic of China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
E3 ubiquitin-protein ligase RNF31
A, C, E, G
166Homo sapiensMutation(s): 0 
Gene Names: RNF31 (ZIBRA)
EC: 2.3.2.31
Find proteins for Q96EP0 (Homo sapiens)
Go to Gene View: RNF31
Go to UniProtKB:  Q96EP0
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Sharpin
B, D, F, H
108Homo sapiensMutation(s): 0 
Gene Names: SHARPIN (SIPL1)
Find proteins for Q9H0F6 (Homo sapiens)
Go to Gene View: SHARPIN
Go to UniProtKB:  Q9H0F6
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, C, E, G
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.261 
  • Space Group: P 32
Unit Cell:
Length (Å)Angle (°)
a = 101.347α = 90.00
b = 101.347β = 90.00
c = 146.982γ = 120.00
Software Package:
Software NamePurpose
HKL-2000data scaling
HKL-2000data reduction
PHENIXphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Basic Research Program of ChinaChina2013CB836900
Science and Technology Commission of Shanghai MunicipalityChina15JC1400400
Strategic Priority Research Program of the Chinese Academy of SciencesChinaXDB20000000
National Natural Science Foundation of ChinaChina31500597
Science and Technology Commission of Shanghai MunicipalityChina15ZR1449100

Revision History 

  • Version 1.0: 2017-10-18
    Type: Initial release