Structures of the interleukin 11 signalling complex reveal gp130 dynamics and the inhibitory mechanism of a cytokine variant

Metcalfe R Hanssen E, Fung K, Aizel K, Kosasih C, Zlatic C, Doughty L, Morton C, Leis A, Parker M, Gooley P, Putoczki T, Griffin M, Nature Communications 14(1) (2023) DOI

SASDLS3 – Interleukin 11 Mutein, complex with gp130 (domains 1-3) and IL-11Rα

Interleukin-11 receptor subunit alpha
Interleukin 11 Mutein
Interleukin-6 receptor subunit beta
MWexperimental 88 kDa
MWexpected 85 kDa
VPorod 160 nm3
log I(s) 3.28×10-2 3.28×10-3 3.28×10-4 3.28×10-5
Interleukin-11 receptor subunit alpha Interleukin 11 Mutein Interleukin-6 receptor subunit beta small angle scattering data  s, nm-1
ln I(s)
Interleukin-11 receptor subunit alpha Interleukin 11 Mutein Interleukin-6 receptor subunit beta Guinier plot ln 3.29×10-2 Rg: 4.4 nm 0 (4.4 nm)-2 s2
(sRg)2I(s)/I(0)
Interleukin-11 receptor subunit alpha Interleukin 11 Mutein Interleukin-6 receptor subunit beta Kratky plot 1.104 0 3 sRg
p(r)
Interleukin-11 receptor subunit alpha Interleukin 11 Mutein Interleukin-6 receptor subunit beta pair distance distribution function Rg: 4.5 nm 0 Dmax: 15.6 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Interleukin-11 receptor subunit alpha Interleukin 11 Mutein Interleukin-6 receptor subunit beta DAMMIN model

log I(s)
 s, nm-1
Interleukin-11 receptor subunit alpha Interleukin 11 Mutein Interleukin-6 receptor subunit beta OTHER model

Synchrotron SAXS data from solutions of Interleukin 11 Mutein, complex with gp130 (domains 1-3) and IL-11Rα in 20 mM Tris, 150 mM NaCl, 0.2% sodium azide, pH 8.5 were collected on the SAXS/WAXS beam line at the Australian Synchrotron storage ring (Melbourne, Australia) using a Pilatus3 S 2M detector at a sample-detector distance of 3.5 m and at a wavelength of λ = 0.108 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). In-line size-exclusion chromatography (SEC) SAS was employed. The SEC parameters were as follows: A sample at 2 mg/ml was injected at a 45.00 ml/min flow rate onto a GE Superdex 200 Increase 10/300 column at 20°C. 13 successive 1 second frames were collected. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.

Sample injection volume = UNKNOWN

Interleukin-11 receptor subunit alpha (IL11RA)
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Monomer
Mon. MW   32.2 kDa
 
UniProt   Q14626 (23-319)
Sequence   FASTA
 
Interleukin 11 Mutein
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Monomer
Mon. MW   18.3 kDa
Sequence   FASTA
 
Interleukin-6 receptor subunit beta
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Monomer
Mon. MW   34.5 kDa
 
UniProt   P40189 (22-324)
Sequence   FASTA
 
PDB ID   8DPT