An intrinsically disordered transcription activation domain increases the DNA binding affinity and reduces the specificity of NFκB p50/RelA.

Baughman HER, Narang D, Chen W, Villagrán Suárez AC, Lee J, Bachochin MJ, Gunther TR, Wolynes PG, Komives EA, J Biol Chem :102349 (2022) Europe PMC

SASDHD5 – Transactivation domain of RelA

Transcription factor p65 340-549
MWexperimental 39 kDa
MWexpected 23 kDa
VPorod 59 nm3
log I(s) 1.69×100 1.69×10-1 1.69×10-2 1.69×10-3
Transcription factor p65 340-549 small angle scattering data  s, nm-1
ln I(s)
Transcription factor p65 340-549 Guinier plot ln 1.69×100 Rg: 2.7 nm 0 (2.7 nm)-2 s2
(sRg)2I(s)/I(0)
Transcription factor p65 340-549 Kratky plot 1.104 0 3 sRg
p(r)
Transcription factor p65 340-549 pair distance distribution function Rg: 2.7 nm 0 Dmax: 8.2 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Transcription factor p65 340-549 MULTIFOXS model

Synchrotron SAXS data from solutions of the Nuclear factor kB RelA transactivation domain in 25 mM Tris.Cl, 150 mM NaCl, 1 mM DTT, 0.5 mM EDTA, pH 7.5 were collected on the 12.3.1 (SIBYLS) beam line at the Advanced Light Source (ALS; Berkeley, CA, USA) using a Pilatus3 X 2M detector at a sample-detector distance of 2 m and at a wavelength of λ = 0.127 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). One solute concentration of 1.25 mg/ml was measured at 10°C. 32 successive 10 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. 32 successive 10 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.

Storage temperature = UNKNOWN

Transcription factor p65 340-549 (Rela)
Mol. type   Protein
Organism   Mus musculus
Olig. state   Monomer
Mon. MW   22.9 kDa
 
UniProt   Q04207 (340-549)
Sequence   FASTA