2VPJ

Crystal structure of the Kelch domain of human KLHL12


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.161 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Structural Basis for Cul3 Assembly with the Btb-Kelch Family of E3 Ubiquitin Ligases.

Canning, P.Cooper, C.D.O.Krojer, T.Murray, J.W.Pike, A.C.W.Chaikuad, A.Keates, T.Thangaratnarajah, C.Hojzan, V.Marsden, B.D.Gileadi, O.Knapp, S.von Delft, F.Bullock, A.N.

(2013) J.Biol.Chem. 288: 7803

  • DOI: 10.1074/jbc.M112.437996
  • Primary Citation of Related Structures:  3II7, 2XN4, 4AP2, 4APF, 4ASC

  • PubMed Abstract: 
  • Cullin-RING ligases are multisubunit E3 ubiquitin ligases that recruit substrate-specific adaptors to catalyze protein ubiquitylation. Cul3-based Cullin-RING ligases are uniquely associated with BTB adaptors that incorporate homodimerization, Cul3 as ...

    Cullin-RING ligases are multisubunit E3 ubiquitin ligases that recruit substrate-specific adaptors to catalyze protein ubiquitylation. Cul3-based Cullin-RING ligases are uniquely associated with BTB adaptors that incorporate homodimerization, Cul3 assembly, and substrate recognition into a single multidomain protein, of which the best known are BTB-BACK-Kelch domain proteins, including KEAP1. Cul3 assembly requires a BTB protein "3-box" motif, analogous to the F-box and SOCS box motifs of other Cullin-based E3s. To define the molecular basis for this assembly and the overall architecture of the E3, we determined the crystal structures of the BTB-BACK domains of KLHL11 both alone and in complex with Cul3, along with the Kelch domain structures of KLHL2 (Mayven), KLHL7, KLHL12, and KBTBD5. We show that Cul3 interaction is dependent on a unique N-terminal extension sequence that packs against the 3-box in a hydrophobic groove centrally located between the BTB and BACK domains. Deletion of this N-terminal region results in a 30-fold loss in affinity. The presented data offer a model for the quaternary assembly of this E3 class that supports the bivalent capture of Nrf2 and reveals potential new sites for E3 inhibitor design.


    Organizational Affiliation

    Structural Genomics Consortium, University of Oxford, Oxford OX3 7DQ, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
KELCH-LIKE PROTEIN 12
A
301Homo sapiensGene Names: KLHL12 (C3IP1)
Find proteins for Q53G59 (Homo sapiens)
Go to Gene View: KLHL12
Go to UniProtKB:  Q53G59
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACT
Query on ACT

Download SDF File 
Download CCD File 
A
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.161 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 44.637α = 90.00
b = 61.546β = 111.75
c = 45.523γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
PHASERphasing
REFMACrefinement
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-03-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance
  • Version 1.2: 2013-02-06
    Type: Database references, Derived calculations, Structure summary
  • Version 1.3: 2013-03-27
    Type: Database references
  • Version 1.4: 2018-01-24
    Type: Database references