8SH2

KLHDC2 in complex with EloB and EloC


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.74 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Starting Models: experimental, in silico
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wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Co-opting the E3 ligase KLHDC2 for targeted protein degradation by small molecules.

Hickey, C.M.Digianantonio, K.M.Zimmermann, K.Harbin, A.Quinn, C.Patel, A.Gareiss, P.Chapman, A.Tiberi, B.Dobrodziej, J.Corradi, J.Cacace, A.M.Langley, D.R.Bekes, M.

(2024) Nat Struct Mol Biol 31: 311-322

  • DOI: https://doi.org/10.1038/s41594-023-01146-w
  • Primary Citation of Related Structures:  
    8SGE, 8SGF, 8SH2

  • PubMed Abstract: 

    Targeted protein degradation (TPD) by PROTAC (proteolysis-targeting chimera) and molecular glue small molecules is an emerging therapeutic strategy. To expand the roster of E3 ligases that can be utilized for TPD, we describe the discovery and biochemical characterization of small-molecule ligands targeting the E3 ligase KLHDC2. Furthermore, we functionalize these KLHDC2-targeting ligands into KLHDC2-based BET-family and AR PROTAC degraders and demonstrate KLHDC2-dependent target-protein degradation. Additionally, we offer insight into the assembly of the KLHDC2 E3 ligase complex. Using biochemical binding studies, X-ray crystallography and cryo-EM, we show that the KLHDC2 E3 ligase assembles into a dynamic tetramer held together via its own C terminus, and that this assembly can be modulated by substrate and ligand engagement.


  • Organizational Affiliation

    Arvinas, Inc, New Haven, CT, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Kelch domain-containing protein 2A [auth B],
J [auth C],
K [auth A],
L [auth D]
412Homo sapiensMutation(s): 0 
Gene Names: KLHDC2HCA33
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y2U9 (Homo sapiens)
Explore Q9Y2U9 
Go to UniProtKB:  Q9Y2U9
PHAROS:  Q9Y2U9
GTEx:  ENSG00000165516 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9Y2U9
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Elongin-BB [auth E],
D [auth G],
F [auth I],
H [auth K]
104Homo sapiensMutation(s): 0 
Gene Names: ELOBTCEB2
UniProt & NIH Common Fund Data Resources
Find proteins for Q15370 (Homo sapiens)
Explore Q15370 
Go to UniProtKB:  Q15370
PHAROS:  Q15370
GTEx:  ENSG00000103363 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ15370
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
Elongin-CC [auth F],
E [auth H],
G [auth J],
I [auth L]
96Homo sapiensMutation(s): 0 
Gene Names: ELOCTCEB1
UniProt & NIH Common Fund Data Resources
Find proteins for Q15369 (Homo sapiens)
Explore Q15369 
Go to UniProtKB:  Q15369
PHAROS:  Q15369
GTEx:  ENSG00000154582 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ15369
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.74 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONcryoSPARC4.1.1
MODEL REFINEMENTPHENIX1.20.1

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Other privateUnited States--

Revision History  (Full details and data files)

  • Version 1.0: 2024-01-03
    Type: Initial release
  • Version 1.1: 2024-01-17
    Changes: Database references
  • Version 1.2: 2024-02-28
    Changes: Database references