Conformational dynamics, RNA binding, and phase separation regulate the multifunctionality of rabies virus P protein.

Rawlinson SM, Chakraborty S, Sethi A, David CT, Harrison AR, Bird LE, Rozario AM, Uthishtran S, Ardipradja K, Zhao T, Oksayan S, Jans DA, Ang CS, Lu ZH, Yan F, Williamson NA, Arumugam S, Sundaramoorthy V, Bell TDM, Gooley PR, Moseley GW, Nat Commun 16(1):9491 (2025) Europe PMC

SASDRZ4 – K214/R260 mutant of Rabies virus CVS Phosphoprotein Isoform 3 (KRm CVS P3)

Phosphoprotein (Isoform P3; K214A, R260A, D289N, C297S)
MWexperimental 66 kDa
MWexpected 55 kDa
VPorod 180 nm3
log I(s) 2.60×10-2 2.60×10-3 2.60×10-4 2.60×10-5
Phosphoprotein (Isoform P3; K214A, R260A, D289N, C297S) small angle scattering data  s, nm-1
ln I(s)
Phosphoprotein (Isoform P3; K214A, R260A, D289N, C297S) Guinier plot ln 2.60×10-2 Rg: 4.6 nm 0 (4.6 nm)-2 s2
(sRg)2I(s)/I(0)
Phosphoprotein (Isoform P3; K214A, R260A, D289N, C297S) Kratky plot 1.104 0 3 sRg
Dmax: 22.5 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Phosphoprotein (Isoform P3; K214A, R260A, D289N, C297S) EOM/RANCH model
Phosphoprotein (Isoform P3; K214A, R260A, D289N, C297S) EOM/RANCH model
Phosphoprotein (Isoform P3; K214A, R260A, D289N, C297S) EOM/RANCH model
Phosphoprotein (Isoform P3; K214A, R260A, D289N, C297S) EOM/RANCH model

log I(s)
 s, nm-1
Phosphoprotein (Isoform P3; K214A, R260A, D289N, C297S) CORAL model

Synchrotron SAXS data from solutions of the K214/R260 mutant of rabies virus CVS Phosphoprotein Isoform 3 in 25 mM HEPES, 150 mM NaCl, 1 mM TCEP, pH 7.4 were collected on the SAXS/WAXS beam line at the Australian Synchrotron (Melbourne, Australia) using a Pilatus3 S 2M detector at a sample-detector distance of 3.3 m and at a wavelength of λ = 0.1033 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). In-line size-exclusion chromatography (SEC) co-flow (sheath) SAS was employed. The SEC parameters were as follows: A 50.00 μl sample at 5 mg/ml was injected at a 0.40 ml/min flow rate onto a GE Superose 6 Increase 5/150 column at 22°C. One 1 second frame was collected. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.

Phosphoprotein (Isoform P3; K214A, R260A, D289N, C297S) (KRm CVS P3)
Mol. type   Protein
Organism   Rabies virus (strain CVS-11)
Olig. state   Dimer
Mon. MW   27.7 kDa
 
UniProt   P22363 (53-297)
Sequence   FASTA