4QHU | pdb_00004qhu

Crystal Structure of IL-17A/Fab6785 complex

• PDB DOI: https://doi.org/10.2210/pdb4QHU/pdb

• Classification: IMMUNE SYSTEM
• Organism(s): Homo sapiens
• Expression System: Homo sapiens, Escherichia coli
• Mutation(s): Yes 


• Deposited: 2014-05-29 Released: 2015-08-05 
• Deposition Author(s): Luo, J., Gilliland, G.L., Malia, T., Obmolova, G., Teplyakov, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 
  0.216 (Depositor), 0.219 (DCC) 
• R-Value Work: 
  0.171 (Depositor), 0.174 (DCC) 
• R-Value Observed: 
  0.173 (Depositor) 

Literature

IL-17A Asymmetry in a Complex with a Neutralizing Antibody Fab6785 Reveals a Potential Mechanism of Receptor Differentiation

Luo, J., Gilliland, G.L., Malia, T., Obmolova, G., Teplyakov, A.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 6-mer - A2B2C2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 124.65 kDa 
• Atom Count: 9,238 
• Modeled Residue Count: 1,058 
• Deposited Residue Count: 1,140 
• Unique protein chains: 3

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Fab6785 light chain	A [auth L], C [auth A]	214	Homo sapiens	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Fab6785 heavy chain	B [auth H], D [auth B]	224	Homo sapiens	Mutation(s): 0

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Interleukin-17A	E [auth C], F [auth D]	132	Homo sapiens	Mutation(s): 1  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 GTEx:  ENSG00000112115

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	J [auth H], N [auth B], O [auth C], P [auth C], Q [auth D]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
GOL	G [auth L], H [auth L], K [auth H], L [auth A], M [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
CL	I [auth L]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free:  0.216 (Depositor), 0.219 (DCC) 
• R-Value Work:  0.171 (Depositor), 0.174 (DCC) 
• R-Value Observed: 0.173 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 73.21	α = 90
b = 64	β = 95.64
c = 145.6	γ = 90

Software Package:

Software Name	Purpose
StructureStudio	data collection
PHASER	phasing
PHENIX	refinement
XDS	data reduction
XDS	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-08-05 
Deposition Author(s): Luo, J., Gilliland, G.L., Malia, T., Obmolova, G., Teplyakov, A.

Revision History  

• Version 1.0: 2015-08-05
  Type: Initial release
  
• Version 1.1: 2024-10-16
  Changes: Data collection, Database references, Derived calculations, Structure summary