9YIC | pdb_00009yic

Crystal structure of human IL-17A in complex with Compound 1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.15 Å
  • R-Value Free: 
    0.242 (Depositor), 0.257 (DCC) 
  • R-Value Work: 
    0.215 (Depositor), 0.231 (DCC) 
  • R-Value Observed: 
    0.216 (Depositor) 

Starting Model: experimental
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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

A Novel Small Molecule Allosteric Inhibitor of IL-17A from a DNA-Encoded Library.

Milla, M.E.Blevitt, J.M.Goldberg, S.D.Armstrong, A.A.Blain, K.Y.Herman, K.L.Liu, A.X.Luna, R.Milligan, C.M.Patrick, A.N.Steele, R.A.Bembenek, S.D.Centrella, P.Clark, M.A.Cuozzo, J.W.Disch, J.S.Domingo, D.Hunt, A.Hupp, C.D.Keefe, A.D.Luo, J.Mirzadegan, T.Nelen, M.I.Resnicow, D.I.Sigel, E.A.Soutter, H.H.Troast, D.M.Xue, X.Yi, F.Zhang, Y.Jackson, P.F.Edwards, J.P.Lumb, K.J.

(2025) ACS Med Chem Lett 16: 2301-2308

  • DOI: https://doi.org/10.1021/acsmedchemlett.5c00502
  • Primary Citation of Related Structures:  
    9YIC

  • PubMed Abstract: 

    A novel series of inhibitors of the interaction of IL-17A with its cognate receptor has been discovered using DNA-encoded library (DEL) technology. The lead compound (JNJ627, Compound 1 ) of the series occupies the interior interface of the IL-17A homodimer and disables receptor binding. The mechanism of action involves allosteric disruption of the IL-17A quaternary structure to prevent adoption of the receptor-binding conformation, rather than direct orthosteric inhibition at the receptor-binding site. Molecules of this series exhibit remarkably slow on-rate kinetics and potent inhibition of IL-17A signaling in human primary cells.


  • Organizational Affiliation
    • Johnson & Johnson Innovative Medicine, 3210 Merryfield Row, La Jolla, California 92121, United States.

Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Interleukin-17A
A, B, C, D
122Homo sapiensMutation(s): 3 
Gene Names: IL17ACTLA8IL17
UniProt & NIH Common Fund Data Resources
Find proteins for Q16552 (Homo sapiens)
Explore Q16552 
Go to UniProtKB:  Q16552
PHAROS:  Q16552
GTEx:  ENSG00000112115 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ16552
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
A1CXF (Subject of Investigation/LOI)
Query on A1CXF

Download Ideal Coordinates CCD File 
E [auth A],
F [auth C]
(3S)-N-[(3-{[(1S)-2-anilino-1-cyclohexyl-2-oxoethyl]carbamoyl}phenyl)methyl]-2,2-dimethylthiomorpholine-3-carboxamide
C29 H38 N4 O3 S
FFWQWZAOWMZJCB-DQEYMECFSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.15 Å
  • R-Value Free:  0.242 (Depositor), 0.257 (DCC) 
  • R-Value Work:  0.215 (Depositor), 0.231 (DCC) 
  • R-Value Observed: 0.216 (Depositor) 
Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 167.93α = 90
b = 122.69β = 93.82
c = 52.84γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
PHASERphasing
PHENIXrefinement

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Not funded--

Revision History  (Full details and data files)

  • Version 1.0: 2025-10-15
    Type: Initial release
  • Version 1.1: 2025-12-03
    Changes: Database references