Phosphorylation Toggles the SARS-CoV-2 Nucleocapsid Protein Between Two Membrane-Associated Condensate States

Bruna Favetta.

SASDX66 – Phosphorylated SARS-CoV-2 Nucleocapsid protein 1.5 mg/mL

Nucleoprotein
MWexperimental 96 kDa
MWexpected 95 kDa
log I(s) 6.25×100 6.25×10-1 6.25×10-2 6.25×10-3
Nucleoprotein small angle scattering data  s, nm-1
ln I(s)
Nucleoprotein Guinier plot ln 6.25×100 Rg: 5.6 nm 0 (5.6 nm)-2 s2
(sRg)2I(s)/I(0)
Nucleoprotein Kratky plot 1.104 0 3 sRg
Dmax: 19.3 nm

Data validation


There are no models related to this curve.

Synchrotron SAXS data from solutions of Phosphorylated SARS-CoV-2 Nucleocapsid protein 1.5 mg/mL in 20 mM Tris, 150 mM NaCl, pH 7.5 were collected on the 16-ID (LiX) beam line at the National Synchrotron Light Source II (NSLS-II) storage ring (Upton, NY, USA) using a Pilatus3 S 1M, Pilatus3 900 K detector at a sample-detector distance of 3.6 m and at a wavelength of λ = 0.08189 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). One solute concentration of 1.50 mg/ml was measured at 25°C. 10 successive 0.500 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.

Phosphorylated SARS-Cov-2 Nucleocapsid protein dimers at 1.5 mg/mL concentration in 150mM NaCl, 20mM Tris. Phosphorylation carried out in vitro using GSK3b and SRPK1 kinases. SAXS data was collected over a s range of 0.05 - 31.3 nm-1 and analyzed within a range of 0.05 - 2.55 nm-1. λ = 0.08189 nm. Sample to detector distance for small angles was 3.560 m and 0.317 m for wide angles using Pilatus3X 1M and Pilatus3X 900k detectors. Background subtraction was performed for each profile from its buffer. Data collected at NSLS2 at Upton, NY.

Nucleoprotein
Mol. type   Protein
Organism   Severe acute respiratory syndrome coronavirus 2
Olig. state   Dimer
Mon. MW   47.3 kDa
 
UniProt   P0DTC9 (2-419)
Sequence   FASTA