Human PARP14 (ARTD8), catalytic fragment in complex with RBN012042

Experimental Data Snapshot

  • Resolution: 2.25 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.266 
  • R-Value Observed: 0.268 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


Targeted Degradation of PARP14 Using a Heterobifunctional Small Molecule.

Wigle, T.J.Ren, Y.Molina, J.R.Blackwell, D.J.Schenkel, L.B.Swinger, K.K.Kuplast-Barr, K.Majer, C.R.Church, W.D.Lu, A.Z.Mo, J.Abo, R.Cheung, A.Dorsey, B.W.Niepel, M.Perl, N.R.Vasbinder, M.M.Keilhack, H.Kuntz, K.W.

(2021) Chembiochem 22: 2107-2110

  • DOI: https://doi.org/10.1002/cbic.202100047
  • Primary Citation of Related Structures:  
    7L9Y, 7LUN

  • PubMed Abstract: 

    PARP14 is an interferon-stimulated gene that is overexpressed in multiple tumor types, influencing pro-tumor macrophage polarization as well as suppressing the antitumor inflammation response by modulating IFN-γ and IL-4 signaling. PARP14 is a 203 kDa protein that possesses a catalytic domain responsible for the transfer of mono-ADP-ribose to its substrates. PARP14 also contains three macrodomains and a WWE domain which are binding modules for mono-ADP-ribose and poly-ADP-ribose, respectively, in addition to two RNA recognition motifs. Catalytic inhibitors of PARP14 have been shown to reverse IL-4 driven pro-tumor gene expression in macrophages, however it is not clear what roles the non-enzymatic biomolecular recognition motifs play in PARP14-driven immunology and inflammation. To further understand this, we have discovered a heterobifunctional small molecule designed based on a catalytic inhibitor of PARP14 that binds in the enzyme's NAD + -binding site and recruits cereblon to ubiquitinate it and selectively target it for degradation.

  • Organizational Affiliation

    Ribon Therapeutics, 35 Cambridgepark Dr., Suite 300, Cambridge, MA 02140, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Protein mono-ADP-ribosyltransferase PARP14
A, B, C, D
194Homo sapiensMutation(s): 0 
Gene Names: PARP14BAL2KIAA1268
EC: 2.4.2
UniProt & NIH Common Fund Data Resources
Find proteins for Q460N5 (Homo sapiens)
Explore Q460N5 
Go to UniProtKB:  Q460N5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ460N5
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
XRM (Subject of Investigation/LOI)
Query on XRM

Download Ideal Coordinates CCD File 
E [auth A],
I [auth B],
M [auth C],
O [auth D]
C19 H25 F N4 O S
Query on EDO

Download Ideal Coordinates CCD File 
H [auth A],
K [auth B],
L [auth B],
Q [auth D]
C2 H6 O2
Query on CL

Download Ideal Coordinates CCD File 
F [auth A],
G [auth A],
J [auth B],
N [auth C],
P [auth D]
Experimental Data & Validation

Experimental Data

  • Resolution: 2.25 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.266 
  • R-Value Observed: 0.268 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 72.65α = 90
b = 92.23β = 90
c = 144.54γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
XDSdata reduction
XDSdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2021-04-21
    Type: Initial release
  • Version 1.1: 2021-06-23
    Changes: Database references
  • Version 1.2: 2023-10-18
    Changes: Data collection, Database references, Refinement description