Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A1B1C1D1 

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

Macromolecule Content

• Total Structure Weight: 96.61 kDa 
• Atom Count: 5,204 
• Modelled Residue Count: 748 
• Deposited Residue Count: 863 
• Unique protein chains: 4

 5DWU

Beta common receptor in complex with a Fab

• PDB DOI: 10.2210/pdb5DWU/pdb

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


• Deposited: 2015-09-23 Released: 2015-12-30 
• Deposition Author(s): Dhagat, U., Parker, M.W.
• Funding Organization(s): National Health and Medical Research Council (NHMRC, Australia)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.97 Å
• R-Value Free: 0.330 
• R-Value Work: 0.288 
• R-Value Observed: 0.290 

Literature

CSL311, a novel, potent, therapeutic monoclonal antibody for the treatment of diseases mediated by the common beta chain of the IL-3, GM-CSF and IL-5 receptors.

Panousis, C., Dhagat, U., Edwards, K.M., Rayzman, V., Hardy, M.P., Braley, H., Gauvreau, G.M., Hercus, T.R., Smith, S., Sehmi, R., McMillan, L., Dottore, M., McClure, B.J., Fabri, L.J., Vairo, G., Lopez, A.F., Parker, M.W., Nash, A.D., Wilson, N.J., Wilson, M.J., Owczarek, C.M.

(2016) MAbs 8: 436-453

• PubMed: 26651396 
• DOI: 10.1080/19420862.2015.1119352
• Primary Citation of Related Structures:  
  5DWU


• PubMed Abstract: 
  

The β common-signaling cytokines interleukin (IL)-3, granulocyte-macrophage colony stimulating factor (GM-CSF) and IL-5 stimulate pro-inflammatory activities of haematopoietic cells via a receptor complex incorporating cytokine-specific α and shared β common (βc, CD131) receptor. Evidence from animal models and recent clinical trials demonstrate that these cytokines are critical mediators of the pathogenesis of inflammatory airway disease such as asthma. However, no therapeutic agents, other than steroids, that specifically and effectively target inflammation mediated by all 3 of these cytokines exist. We employed phage display technology to identify and optimize a novel, human monoclonal antibody (CSL311) that binds to a unique epitope that is specific to the cytokine-binding site of the human βc receptor. The binding epitope of CSL311 on the βc receptor was defined by X-ray crystallography and site-directed mutagenesis. CSL311 has picomolar binding affinity for the human βc receptor, and at therapeutic concentrations is a highly potent antagonist of the combined activities of IL-3, GM-CSF and IL-5 on primary eosinophil survival in vitro. Importantly, CSL311 inhibited the survival of inflammatory cells present in induced sputum from human allergic asthmatic subjects undergoing allergen bronchoprovocation. Due to its high potency and ability to simultaneously suppress the activity of all 3 β common cytokines, CSL311 may provide a new strategy for the treatment of chronic inflammatory diseases where the human βc receptor is central to pathogenesis. The coordinates for the βc/CSL311 Fab complex structure have been deposited with the RCSB Protein Data Bank (PDB 5DWU).

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Organizational Affiliation: 

a Research and Development, CSL Limited; Bio21 Molecular Science and Biotechnology Institute , Parkville Victoria , 3010 , Australia.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cytokine receptor common subunit beta	A	224	Homo sapiens	Mutation(s): 0  Gene Names: CSF2RB, IL3RB, IL5RB
UniProt & NIH Common Fund Data Resources
Find proteins for P32927 (Homo sapiens) Explore P32927  Go to UniProtKB:  P32927
PHAROS:  P32927

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Cytokine receptor common subunit beta	B	203	Homo sapiens	Mutation(s): 1  Gene Names: CSF2RB, IL3RB, IL5RB
UniProt & NIH Common Fund Data Resources
Find proteins for P32927 (Homo sapiens) Explore P32927  Go to UniProtKB:  P32927
PHAROS:  P32927

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Fab - Heavy Chain	C [auth H]	222	Homo sapiens	Mutation(s): 0

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
Fab - Light Chain	D [auth L]	214	Homo sapiens	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	E [auth A], F [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.97 Å
• R-Value Free: 0.330 
• R-Value Work: 0.288 
• R-Value Observed: 0.290 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 99.953	α = 90
b = 71.289	β = 102.71
c = 221.234	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
Aimless	data scaling
PHASER	phasing
PDB_EXTRACT	data extraction
XDS	data reduction

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2015-12-30 
Deposition Author(s): Dhagat, U., Parker, M.W.

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Funding Organization	Location	Grant Number
National Health and Medical Research Council (NHMRC, Australia)	Australia	--

Revision History  

• Version 1.0: 2015-12-30
  Type: Initial release
  
• Version 1.1: 2016-02-10
  Changes: Database references
• Version 1.2: 2016-04-06
  Changes: Database references
• Version 1.3: 2017-09-20
  Changes: Author supporting evidence, Data collection, Derived calculations
• Version 1.4: 2020-01-08
  Changes: Author supporting evidence, Derived calculations
• Version 1.5: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Structure summary