Structural and biochemical characterization of the C‐terminal region of the human RTEL 1 helicase

Cortone G, Graewert M, Kanade M, Longo A, Hegde R, González‐Magaña A, Chaves‐Arquero B, Blanco F, Napolitano L, Onesti S, Protein Science 33(9) (2024) DOI

SASDRW9 – Regulator of telomere elongation helicase 1, HHD1-HHD2 fragment

Regulator of telomere elongation helicase 1 (Isoform 6, 889-1147)
MWexperimental 32 kDa
MWexpected 28 kDa
VPorod 36 nm3
log I(s) 2.05×102 2.05×101 2.05×100 2.05×10-1
Regulator of telomere elongation helicase 1 (Isoform 6, 889-1147) small angle scattering data  s, nm-1
ln I(s)
Regulator of telomere elongation helicase 1 (Isoform 6, 889-1147) Guinier plot ln 2.05×102 Rg: 3.4 nm 0 (3.4 nm)-2 s2
(sRg)2I(s)/I(0)
Regulator of telomere elongation helicase 1 (Isoform 6, 889-1147) Kratky plot 1.104 0 3 sRg
p(r)
Regulator of telomere elongation helicase 1 (Isoform 6, 889-1147) pair distance distribution function Rg: 3.3 nm 0 Dmax: 10.1 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Regulator of telomere elongation helicase 1, HHD1-HHD2 fragment Rg histogram Rg, nm
Regulator of telomere elongation helicase 1 (Isoform 6, 889-1147) EOM/RANCH model

Synchrotron SAXS data from solutions of Regulator of telomere elongation helicase 1, HHD1-HHD2 fragment in 50 mM Hepes, 150 mM NaCl,10 (v/v)% glycerol, 1 mM TCEP, pH 7 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 4 m and at a wavelength of λ = 0.154 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 7.2 mg/ml was injected at a 0.20 ml/min flow rate onto a GE Superdex 75 Increase 5/150 column at 20°C. 2400 successive 0.500 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.

Dmax appears underestimated. Additional EOM .pdb coordinate/model files are provided in the full entry zip archive.

Regulator of telomere elongation helicase 1 (Isoform 6, 889-1147) (HHD1-2)
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Monomer
Mon. MW   28.3 kDa
 
UniProt   Q9NZ71-6 (889-1147)
Sequence   FASTA