The first DEP domain of the RhoGEF P-Rex1 autoinhibits activity andcontributes to membrane binding.

Ravala SK, Hopkins JB, Plescia CB, Allgood SR, Kane MA, Cash JN, Stahelin RV, Tesmer JJG, J Biol Chem (2020) Europe PMC

SASDHY9 – Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein (amino acids 38-408): DHPH

Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein
MWexperimental 48 kDa
MWexpected 43 kDa
VPorod 64 nm3
log I(s) 3.09×10-3 3.09×10-4 3.09×10-5 3.09×10-6
Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein small angle scattering data  s, nm-1
ln I(s)
Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein Guinier plot ln 3.10×10-3 Rg: 2.8 nm 0 (2.8 nm)-2 s2
(sRg)2I(s)/I(0)
Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein Kratky plot 1.104 0 3 sRg
p(r)
Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein pair distance distribution function Rg: 2.9 nm 0 Dmax: 10.5 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein (amino acids 38-408): DHPH Rg histogram Rg, nm
Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein EOM/RANCH model
Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein EOM/RANCH model
Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein EOM/RANCH model
Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein EOM/RANCH model
Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein EOM/RANCH model
Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein EOM/RANCH model

Synchrotron SAXS data from solutions of Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein (amino acids 38-408): DHPH in 20 mM HEPES, 300mM NaCl, pH 8 were collected on the BioCAT 18ID beam line at the Advanced Photon Source (APS), Argonne National Laboratory storage ring (Lemont, IL, USA) using a Pilatus3 X 1M detector at a sample-detector distance of 3.7 m and at a wavelength of λ = 0.1033 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). One solute concentration of 5.00 mg/ml was measured at 22°C. 1900 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.

Phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein (PREX1 - DHPH)
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Monomer
Mon. MW   43.0 kDa
 
UniProt   Q8TCU6 (38-408)
Sequence   FASTA