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Synchrotron SAXS
data from solutions of
Mammalian cell entry protein 1A (Mce1A38-454)
in
50 mM Tris, 500 mM NaCl, 10% Glycerol, 5mM DDM, 1 mM β-ME, pH 8
were collected
on the
B21 beam line
at the Diamond Light Source storage ring
(Didcot, UK)
using a Pilatus 2M detector
at a wavelength of λ = 0.1 nm
(I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle).
In-line size-exclusion chromatography (SEC) SAS was employed. The SEC parameters were as follows: A 55.00 μl sample
at 5 mg/ml was injected at a 0.08 ml/min flow rate
onto a GE Superdex 200 Increase 3.2/300 column
.
The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.
Synchrotron SAXS data of the Mce+Helical+Tail domain of Mammalian cell entry protein (Mce) 1A collected at DLS beamline B21 using SEC-SAXS. The molecular mass (MW) of the protein-detergent complex was determined using Size exclusion chromatography-multi angle light scattering (SEC-MALS) coupled to refractive index measurements. The model files contain the protein-detergent molecules. The protein models generated using iTasser were fitted against the SAXS data using the in-house program, also taking in account the micelle contribution. The aggregation number for the extended model (220) is provided with the sample data and the aggregation number for the coiled-coil model is 200.
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s, nm-1
