Structural Characterization of Full-Length Human Dehydrodolichyl Diphosphate Synthase Using an Integrative Computational and Experimental Approach.

Lisnyansky Bar-El M, Lee SY, Ki AY, Kapelushnik N, Loewenstein A, Chung KY, Schneidman-Duhovny D, Giladi M, Newman H, Haitin Y, Biomolecules 9(11) (2019) Europe PMC

SASDHX2 – Dehydrodolichyl diphosphate synthase complex subunit DHDDS

Dehydrodolichyl diphosphate synthase complex subunit DHDDS
MWexperimental 78 kDa
MWexpected 78 kDa
VPorod 122 nm3
log I(s) 3.09×100 3.09×10-1 3.09×10-2 3.09×10-3
Dehydrodolichyl diphosphate synthase complex subunit DHDDS small angle scattering data  s, nm-1
ln I(s)
Dehydrodolichyl diphosphate synthase complex subunit DHDDS Guinier plot ln 3.09×100 Rg: 3.2 nm 0 (3.2 nm)-2 s2
(sRg)2I(s)/I(0)
Dehydrodolichyl diphosphate synthase complex subunit DHDDS Kratky plot 1.104 0 3 sRg
Dmax: 13 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Dehydrodolichyl diphosphate synthase complex subunit DHDDS MODELLER model

Synchrotron SAXS data from solutions of DHDDS in Tris-HCl, 150 mM NaCl, 20 mM 2-mercaptoethanol and 0.02% Triton-X100, pH 7.5 were collected on the BM29 beam line at the ESRF (Grenoble, France) using a Pilatus 1M detector at a sample-detector distance of 2.9 m and 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 50.00 μl sample at 8 mg/ml was injected onto a GE Superdex 200 Increase 10/300 column at 20°C. 2000 successive 1 second frames were collected through the SEC-elution profile. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted from the scattering data measured from the sample elution peak.

Flow rate = UNKNOWN

Dehydrodolichyl diphosphate synthase complex subunit DHDDS (DHDDS)
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Dimer
Mon. MW   39.1 kDa
 
UniProt   Q86SQ9 (1-333)
Sequence   FASTA