Stable Picodisc Assemblies from Saposin Proteins and Branched Detergents.

Kurgan KW, Chen B, Brown KA, Falco Cobra P, Ye X, Ge Y, Gellman SH, Biochemistry 60(14):1108-1119 (2021) Europe PMC

SASDJR9 – Saposin-B, R232W mutant, plus MNA C12 (1,2,5,6-tetra-β-D-glucopyranoside-3,4-O-Di-dodecyl-d-mannitol)

1,2,5,6-tetra-β-D-glucopyranoside-3,4-O-Di-dodecyl-d-mannitol
Prosaposin (Saposin-B, R232W mutant)
MWexperimental 25 kDa
MWexpected 30 kDa
log I(s) 7.42×10-2 7.42×10-3 7.42×10-4 7.42×10-5
1,2,5,6-tetra-β-D-glucopyranoside-3,4-O-Di-dodecyl-d-mannitol Prosaposin (Saposin-B, R232W mutant) small angle scattering data  s, nm-1
ln I(s)
1,2,5,6-tetra-β-D-glucopyranoside-3,4-O-Di-dodecyl-d-mannitol Prosaposin (Saposin-B, R232W mutant) Guinier plot ln 7.42×10-2 Rg: 2.3 nm 0 (2.3 nm)-2 s2
(sRg)2I(s)/I(0)
1,2,5,6-tetra-β-D-glucopyranoside-3,4-O-Di-dodecyl-d-mannitol Prosaposin (Saposin-B, R232W mutant) Kratky plot 1.104 0 3 sRg
p(r)
1,2,5,6-tetra-β-D-glucopyranoside-3,4-O-Di-dodecyl-d-mannitol Prosaposin (Saposin-B, R232W mutant) pair distance distribution function Rg: 2.3 nm 0 Dmax: 6.9 nm

Data validation


There are no models related to this curve.

Synchrotron SAXS data from solutions of saposin-B, R232W mutant, plus MNA C12 in 25 mM Tris-HCl, 150 mM NaCl, pH 7.5 were collected on the 12ID-B SAXS/WAXS beam line at the Advanced Photon Source (APS), Argonne National Laboratory (Lemont, IL, USA) using a Pilatus 2M detector at a wavelength of λ = 0.0932 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 100.00 μl sample at 10 mg/ml was injected at a 0.20 ml/min flow rate onto a GE Superdex 75 Increase 5/150 column . 835 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.

Cell temperature = UNKNOWN. Storage temperature = UNKNOWN. Sample detector distance = UNKNOWN

1,2,5,6-tetra-β-D-glucopyranoside-3,4-O-Di-dodecyl-d-mannitol (MNA C12)
Mol. type   Other
Olig. state   Decamer
Mon. MW   1.2 kDa
Chemical formula
 
Prosaposin (Saposin-B, R232W mutant) (Sap-B, R232W)
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Dimer
Mon. MW   9.2 kDa
 
UniProt   P07602 (195-272)
Sequence   FASTA