5EDV

Structure of the HOIP-RBR/UbcH5B~ubiquitin transfer complex

  • Classification: LIGASE/TRANSFERASE
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli
  • Mutation(s): Yes 

  • Deposited: 2015-10-22 Released: 2016-01-20 
  • Deposition Author(s): Lechtenberg, B.C., Mace, P.D., Sanishvili, R., Riedl, S.J.
  • Funding Organization(s): National Institutes of Health/National Institute on Alcohol Abuse and Alcoholism (NIH/NIAAA), National Institutes of Health/National Cancer Institute (NIH/NCI), National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.48 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.249 
  • R-Value Observed: 0.251 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Structure of a HOIP/E2~ubiquitin complex reveals RBR E3 ligase mechanism and regulation.

Lechtenberg, B.C.Rajput, A.Sanishvili, R.Dobaczewska, M.K.Ware, C.F.Mace, P.D.Riedl, S.J.

(2016) Nature 529: 546-550

  • DOI: 10.1038/nature16511
  • Primary Citation of Related Structures:  
    5EDV

  • PubMed Abstract: 
  • Ubiquitination is a central process affecting all facets of cellular signalling and function. A critical step in ubiquitination is the transfer of ubiquitin from an E2 ubiquitin-conjugating enzyme to a substrate or a growing ubiquitin chain, which is mediated by E3 ubiquitin ligases ...

    Ubiquitination is a central process affecting all facets of cellular signalling and function. A critical step in ubiquitination is the transfer of ubiquitin from an E2 ubiquitin-conjugating enzyme to a substrate or a growing ubiquitin chain, which is mediated by E3 ubiquitin ligases. RING-type E3 ligases typically facilitate the transfer of ubiquitin from the E2 directly to the substrate. The RING-between-RING (RBR) family of RING-type E3 ligases, however, breaks this paradigm by forming a covalent intermediate with ubiquitin similarly to HECT-type E3 ligases. The RBR family includes Parkin and HOIP, the central catalytic factor of the LUBAC (linear ubiquitin chain assembly complex). While structural insights into the RBR E3 ligases Parkin and HHARI in their overall auto-inhibited forms are available, no structures exist of intact fully active RBR E3 ligases or any of their complexes. Thus, the RBR mechanism of action has remained largely unknown. Here we present the first structure, to our knowledge, of the fully active human HOIP RBR in its transfer complex with an E2~ubiquitin conjugate, which elucidates the intricate nature of RBR E3 ligases. The active HOIP RBR adopts a conformation markedly different from that of auto-inhibited RBRs. HOIP RBR binds the E2~ubiquitin conjugate in an elongated fashion, with the E2 and E3 catalytic centres ideally aligned for ubiquitin transfer, which structurally both requires and enables a HECT-like mechanism. In addition, three distinct helix-IBR-fold motifs inherent to RBRs form ubiquitin-binding regions that engage the activated ubiquitin of the E2~ubiquitin conjugate and, surprisingly, an additional regulatory ubiquitin molecule. The features uncovered reveal critical states of the HOIP RBR E3 ligase cycle, and comparison with Parkin and HHARI suggests a general mechanism for RBR E3 ligases.


    Organizational Affiliation

    NCI-Designated Cancer Center, Sanford Burnham Prebys Medical Discovery Institute, 10901 North Torrey Pines Road, La Jolla, California 92037, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
E3 ubiquitin-protein ligase RNF31A, B380Homo sapiensMutation(s): 0 
Gene Names: RNF31ZIBRA
EC: 6.3.2 (PDB Primary Data), 2.3.2.31 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for Q96EP0 (Homo sapiens)
Explore Q96EP0 
Go to UniProtKB:  Q96EP0
PHAROS:  Q96EP0
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Ubiquitin-conjugating enzyme E2 D2C, D, I149Homo sapiensMutation(s): 2 
Gene Names: UBE2D2PUBC1UBC4UBC5BUBCH4UBCH5B
EC: 2.3.2.23 (PDB Primary Data), 2.3.2.24 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P62837 (Homo sapiens)
Explore P62837 
Go to UniProtKB:  P62837
PHAROS:  P62837
Protein Feature View
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
Polyubiquitin-BE, F, G, H76Homo sapiensMutation(s): 0 
Gene Names: UBB
UniProt & NIH Common Fund Data Resources
Find proteins for P0CG47 (Homo sapiens)
Explore P0CG47 
Go to UniProtKB:  P0CG47
PHAROS:  P0CG47
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.48 Å
  • R-Value Free: 0.303 
  • R-Value Work: 0.249 
  • R-Value Observed: 0.251 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 104.82α = 90
b = 75.74β = 95.56
c = 120.96γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
Aimlessdata scaling
XSCALEdata scaling
PHASERphasing
XDSdata scaling
Cootmodel building

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute on Alcohol Abuse and Alcoholism (NIH/NIAAA)United StatesR01AA017238
National Institutes of Health/National Cancer Institute (NIH/NCI)United StatesACB-12002
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesAGM-12006

Revision History  (Full details and data files)

  • Version 1.0: 2016-01-20
    Type: Initial release
  • Version 1.1: 2016-02-03
    Changes: Derived calculations
  • Version 1.2: 2016-02-10
    Changes: Database references
  • Version 1.3: 2017-09-27
    Changes: Author supporting evidence, Database references, Derived calculations, Refinement description
  • Version 1.4: 2019-12-04
    Changes: Author supporting evidence