5UDH

HHARI/ARIH1-UBCH7~Ubiquitin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.24 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.222 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structural Studies of HHARI/UbcH7Ub Reveal Unique E2Ub Conformational Restriction by RBR RING1.

Dove, K.K.Olszewski, J.L.Martino, L.Duda, D.M.Wu, X.S.Miller, D.J.Reiter, K.H.Rittinger, K.Schulman, B.A.Klevit, R.E.

(2017) Structure 25: 890-900.e5

  • DOI: 10.1016/j.str.2017.04.013

  • PubMed Abstract: 
  • RING-between-RING (RBR) E3s contain RING1 domains that are structurally similar yet mechanistically distinct from canonical RING domains. Both types of E3 bind E2∼ubiquitin (E2∼Ub) via their RINGs but canonical RING E3s promote closed E2∼Ub conformat ...

    RING-between-RING (RBR) E3s contain RING1 domains that are structurally similar yet mechanistically distinct from canonical RING domains. Both types of E3 bind E2∼ubiquitin (E2∼Ub) via their RINGs but canonical RING E3s promote closed E2∼Ub conformations required for direct Ub transfer from the E2 to substrate, while RBR RING1s promote open E2∼Ub to favor Ub transfer to the E3 active site. This different RING/E2∼Ub conformation determines its direct target, which for canonical RING E3s is typically a substrate or substrate-linked Ub, but is the E3 active-site cysteine in the case of RBR-type E3s. Here we show that a short extension of HHARI RING1, namely Zn2+-loop II, not present in any RING E3s, acts as a steric wedge to disrupt closed E2∼Ub, providing a structural explanation for the distinctive RING1-dependent conformational restriction mechanism utilized by RBR E3s.


    Organizational Affiliation

    Department of Biochemistry, University of Washington, 1705 Northeast Pacific Street, Seattle, WA 98195, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
E3 ubiquitin-protein ligase ARIH1
A, B
470Homo sapiensMutation(s): 0 
Gene Names: ARIH1 (ARI, MOP6, UBCH7BP)
EC: 2.3.2.31
Find proteins for Q9Y4X5 (Homo sapiens)
Go to Gene View: ARIH1
Go to UniProtKB:  Q9Y4X5
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin-conjugating enzyme E2 L3
C, D
156Homo sapiensMutation(s): 1 
Gene Names: UBE2L3 (UBCE7, UBCH7)
EC: 2.3.2.23
Find proteins for P68036 (Homo sapiens)
Go to Gene View: UBE2L3
Go to UniProtKB:  P68036
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin C variant
E
82Homo sapiensMutation(s): 0 
Gene Names: UBC
Find proteins for P0CG48 (Homo sapiens)
Go to Gene View: UBC
Go to UniProtKB:  P0CG48
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ZN
Query on ZN

Download SDF File 
Download CCD File 
A, B
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.24 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.222 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 184.571α = 90.00
b = 76.788β = 107.33
c = 147.724γ = 90.00
Software Package:
Software NamePurpose
CRANKphasing
XDSdata reduction
XDSdata scaling
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-06-14
    Type: Initial release
  • Version 1.1: 2017-06-21
    Type: Database references