A SEC-SAXS analysis of SARS-CoV-2 nsp14 apo or in complex with vhh and/or nsp10

Pierre Gauffre.

SASDVW8 – nsp14 and nsp10 from SARS-CoV-2 with vhh

Replicase polyprotein 1ab (Guanine-N7 methyltransferase nsp14)
Replicase polyprotein 1ab (Non-structural protein 10)
vhh anti-nsp14 SARS-CoV-2
MWI(0) 81 kDa
MWexpected 91 kDa
VPorod 147 nm3
log I(s) 1.45×10-3 1.45×10-4 1.45×10-5 1.45×10-6
Replicase polyprotein 1ab (Guanine-N7 methyltransferase nsp14) Replicase polyprotein 1ab (Non-structural protein 10) vhh anti-nsp14 SARS-CoV-2 small angle scattering data  s, nm-1
ln I(s)
Replicase polyprotein 1ab (Guanine-N7 methyltransferase nsp14) Replicase polyprotein 1ab (Non-structural protein 10) vhh anti-nsp14 SARS-CoV-2 Guinier plot ln 1.46×10-3 Rg: 3.8 nm 0 (3.8 nm)-2 s2
(sRg)2I(s)/I(0)
Replicase polyprotein 1ab (Guanine-N7 methyltransferase nsp14) Replicase polyprotein 1ab (Non-structural protein 10) vhh anti-nsp14 SARS-CoV-2 Kratky plot 1.104 0 √3 sRg
p(r)
Replicase polyprotein 1ab (Guanine-N7 methyltransferase nsp14) Replicase polyprotein 1ab (Non-structural protein 10) vhh anti-nsp14 SARS-CoV-2 pair distance distribution function Rg: 4.1 nm 0 Dmax: 19.7 nm

Data validation


There are no models related to this curve.

Synchrotron SAXS data from solutions of nsp14 and nsp10 from SARS-CoV-2 with vhh in 25 mM HEPES, 300 mM NaCl, 5 mM CaCl2, pH 8 were collected on the SWING beam line at SOLEIL (Saint-Aubin, France) using a Eiger 4M detector at a sample-detector distance of 2 m and at a wavelength of λ = 0.103317 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 100.00 μl sample at 17.4 mg/ml was injected at a 0.30 ml/min flow rate onto a Agilent Bio SEC-3, 300 Å column at 20°C. 800 successive 0.990 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.

For display purposes, the primary SAXS data of this entry has been scaled by 10000. The original unscaled data are made available in the full entry zip archive.

Replicase polyprotein 1ab (Guanine-N7 methyltransferase nsp14) (Nsp14)
Mol. type   Protein
Organism   Severe acute respiratory syndrome coronavirus 2
Olig. state   Monomer
Mon. MW   59.8 kDa
 
UniProt   P0DTD1 (5926-6452)
Sequence   FASTA
 
Replicase polyprotein 1ab (Non-structural protein 10) (Nsp10)
Mol. type   Protein
Organism   Severe acute respiratory syndrome coronavirus 2
Olig. state   Monomer
Mon. MW   17.2 kDa
 
UniProt   P0DTD1 (4254-4392)
Sequence   FASTA
 
vhh anti-nsp14 SARS-CoV-2 (vhh)
Mol. type   Protein
Olig. state   Monomer
Mon. MW   14.3 kDa
Sequence   FASTA