Use of biomolecular emulator for characterizing flexible proteins by small-angle x-ray scattering.

Haitin Y, Manori B, Giladi M Protein Sci 35(6):e70646 (2026) Europe PMC

SASDZD3 – Double C2-like domain-containing protein beta (DOC2B) C2AB domains from , apo state

Double C2-like domain-containing protein beta
MWexperimental 32 kDa
MWexpected 33 kDa
log I(s) 3.02×101 3.02×100 3.02×10-1 3.02×10-2
Double C2-like domain-containing protein beta small angle scattering data  s, nm-1
ln I(s)
Double C2-like domain-containing protein beta Guinier plot ln 3.03×101 Rg: 2.6 nm 0 (2.6 nm)-2 s2
(sRg)2I(s)/I(0)
Double C2-like domain-containing protein beta Kratky plot 1.104 0 3 sRg

Data validation


Fits and models


log I(s)
 s, nm-1
Double C2-like domain-containing protein beta (DOC2B) C2AB domains from , apo state Rg histogram Rg, nm
Double C2-like domain-containing protein beta OTHER model
Double C2-like domain-containing protein beta OTHER model
Double C2-like domain-containing protein beta OTHER model

Synchrotron SAXS data from solutions of Double C2-like domain-containing protein beta (DOC2B) C2AB domains from , apo state in 20 mM Tris–HCl, 200 mM NaCl, 20 mM β-mercaptoethanol, 10 mM EDTA, pH 6.8 were collected on the EMBL X33 beam line at the DORIS III, DESY storage ring (Hamburg, Germany) using a Pilatus 1M-W detector at a sample-detector distance of 2.7 m and at a wavelength of λ = 0.15 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). Solute concentrations ranging between 2 and 10 mg/ml were measured at 5°C. 10 successive 2 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. The low angle data collected at lower concentration were merged with the highest concentration high angle data to yield the final composite scattering curve.

Tags: X33
Double C2-like domain-containing protein beta
Mol. type   Protein
Organism   Rattus norvegicus
Olig. state   Monomer
Mon. MW   33.3 kDa
 
UniProt   P70610 (125-412)
Sequence   FASTA