Structural analyses of an RNA stability element interacting with poly(A)

Torabi S, Chen Y Zhang K, Wang J, DeGregorio S, Vaidya A, Su Z, Pabit S, Chiu W, Pollack L, Steitz J, Proceedings of the National Academy of Sciences 118(14):e2026656118 (2021) DOI

SASDK23 – double Element for Nuclear Expression (dENE) Mutant A + Poly(A)30

A dENE + Poly(A)30
MWexperimental 38 kDa
MWexpected 37 kDa
log I(s) 1.22×101 1.22×100 1.22×10-1 1.22×10-2
A dENE + Poly(A)30 small angle scattering data  s, nm-1
ln I(s)
A dENE + Poly(A)30 Guinier plot ln 1.23×101 Rg: 3.3 nm 0 (3.3 nm)-2 s2
(sRg)2I(s)/I(0)
A dENE + Poly(A)30 Kratky plot 1.104 0 √3 sRg
p(r)
A dENE + Poly(A)30 pair distance distribution function Rg: 3.5 nm 0 Dmax: 13.3 nm

Data validation

There are no models related to this curve.

Synchrotron SAXS data from solutions of double Element for Nuclear Expression (dENE) Mutant A + Poly(A)30 in 50 mM KCl, 1.0 mM MgCl2, 10 mM MOPS, 25 uM EDTA, pH 7 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 detector at a sample-detector distance of 3.0 m and at a wavelength of λ = 0.092 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). One solute concentration of 0.74 mg/ml was measured at 10°C. 15 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.

A dENE + Poly(A)30 (A dENE + Poly(A)30)
Mol. type   RNA
Olig. state   Monomer
Mon. MW   37.3 kDa
Sequence   FASTA