Tau preaggregation conformation of trunctated tau proteins

Ondrej Cehlar.

SASD2E7 – SEC-SAXS of Human microtubule-associated protein tau dGAE fragment (2N4R residues 297–391)

Microtubule-associated protein tau
MWexperimental 1 kDa
MWexpected 10 kDa
log I(s) 1.23×102 1.23×101 1.23×100 1.23×10-1
Microtubule-associated protein tau small angle scattering data  s, nm-1
ln I(s)
Microtubule-associated protein tau Guinier plot ln 1.24×102 Rg: 2.7 nm 0 (2.7 nm)-2 s2
(sRg)2I(s)/I(0)
Microtubule-associated protein tau Kratky plot 1.104 0 √3 sRg

Data validation


There are no models related to this curve.

Synchrotron SAXS data from solutions of SEC-SAXS of Human microtubule-associated protein tau dGAE fragment (2N4R residues 297–391) in PBS, pH 7.4 were collected on the EMBL P12 beam line at the PETRA III storage ring (DESY; Hamburg, Germany) using a Pilatus 6M detector at a sample-detector distance of 3 m and at a wavelength of λ = 0.123987 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 40.00 μl sample at 7.1 mg/ml was injected at a 0.70 ml/min flow rate onto a GE Superdex 200 Increase 10/300 column at 20°C. 2100 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.

Funding: This research was funded by the EU NextGenerationEU through the Recovery and Resilience Plan for Slovakia under the project No. 09I03-03-V04-00623. CAUTION: The SEC-SAXS chromatogram exhibits a pronounced, non-stationary baseline across the elution region. Because a unique stable background could not be defined, multiple scattering profiles obtained by subtraction using alternative background regions are provided in an additional ZIP file. These profiles represent alternative processing of the same SEC-SAXS measurement. The derived Rg, I(0), molecular mass, Dmax and P(r) should therefore be interpreted with caution.

Microtubule-associated protein tau (dGAE)
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Monomer
Mon. MW   10.2 kDa
 
UniProt   P10636 (614-708)
Sequence   FASTA