5HI5

Binding site elucidation and structure guided design of macrocyclic IL-17A antagonists

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 

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Literature

Binding site elucidation and structure guided design of macrocyclic IL-17A antagonists.

Liu, S., Dakin, L.A., Xing, L., Withka, J.M., Sahasrabudhe, P.V., Li, W., Banker, M.E., Balbo, P., Shanker, S., Chrunyk, B.A., Guo, Z., Chen, J.M., Young, J.A., Bai, G., Starr, J.T., Wright, S.W., Bussenius, J., Tan, S., Gopalsamy, A., Lefker, B.A., Vincent, F., Jones, L.H., Xu, H., Hoth, L.R., Geoghegan, K.F., Qiu, X., Bunnage, M.E., Thorarensen, A.

(2016) Sci Rep 6: 30859-30859

  • DOI: 10.1038/srep30859
  • Primary Citation of Related Structures:  
    5HI3, 5HI4, 5HI5

  • PubMed Abstract: 

    • Interleukin-17A (IL-17A) is a principal driver of multiple inflammatory and immune disorders. Antibodies that neutralize IL-17A or its receptor (IL-17RA) deliver efficacy in autoimmune diseases, but no small-molecule IL-17A antagonists have yet progressed into clinical trials ...

    Interleukin-17A (IL-17A) is a principal driver of multiple inflammatory and immune disorders. Antibodies that neutralize IL-17A or its receptor (IL-17RA) deliver efficacy in autoimmune diseases, but no small-molecule IL-17A antagonists have yet progressed into clinical trials. Investigation of a series of linear peptide ligands to IL-17A and characterization of their binding site has enabled the design of novel macrocyclic ligands that are themselves potent IL-17A antagonists.

    Organizational Affiliation: 

    Worldwide Medicinal Chemistry, Pfizer Worldwide R&D, 610 Main Street, Cambridge, MA 02139, USA.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Interleukin-17AA, B132Homo sapiensMutation(s): 0 
Gene Names: IL17A, CTLA8, IL17
UniProt & NIH Common Fund Data Resources
Find proteins for Q16552 (Homo sapiens)
Explore Q16552 
Go to UniProtKB:  Q16552
PHAROS:  Q16552
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UniProt GroupQ16552
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
CAT-2000 FAB heavy chainC,
E [auth H]		237Homo sapiensMutation(s): 0 
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
CAT-2000 light chainD,
G [auth L]		214Homo sapiensMutation(s): 0 
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Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
synthetic IL-17A inhibitorF [auth I]16synthetic constructMutation(s): 0 
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
63Q
Query on 63Q
Download Ideal Coordinates CCD File 
H [auth B](4S,20R)-7-chloro-N-methyl-4-{[(1-methyl-1H-pyrazol-5-yl)carbonyl]amino}-3,18-dioxo-2,19-diazatetracyclo[20.2.2.1~6,10~.1~11,15~]octacosa-1(24),6(28),7,9,11(27),12,14,22,25-nonaene-20-carboxamide
C33 H33 Cl N6 O4
CEFRORFLEYHRHI-IZLXSDGUSA-N		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
63Q Binding MOAD:  5HI5 IC50: 9 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 91.32α = 90
b = 68.68β = 90.65
c = 100.53γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
AutoPROCdata scaling
Aimlessdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

  • Released Date: 2016-08-31 
    • Deposition Author(s): Liu, S.

Revision History  (Full details and data files)

  • Version 1.0: 2016-08-31
    Type: Initial release
  • Version 1.1: 2017-11-22
    Changes: Derived calculations, Refinement description