The F1 loop of the talin head domain acts as a gatekeeper in integrin activation and clustering.

Kukkurainen S, Azizi L, Zhang P, Jacquier MC, Baikoghli M, von Essen M, Tuukkanen A, Laitaoja M, Liu X, Rahikainen R, Orłowski A, Jänis J, Määttä JAE, Varjosalo M, Vattulainen I, Róg T, Svergun D, Cheng RH, Wu J, Hytönen VP, Wehrle-Haller B, J Cell Sci 133(19) (2020) Europe PMC

SASDFT7 – Talin-1 head amino acids 1-405

Talin-1, human
MWI(0) 56 kDa
MWexpected 51 kDa
VPorod 94 nm3
log I(s) 3.76×103 3.76×102 3.76×101 3.76×100
Talin-1, human small angle scattering data  s, nm-1
ln I(s)
Talin-1, human Guinier plot ln 3.77×103 Rg: 3.4 nm 0 (3.4 nm)-2 s2
(sRg)2I(s)/I(0)
Talin-1, human Kratky plot 1.104 0 3 sRg
p(r)
Talin-1, human pair distance distribution function Rg: 3.5 nm 0 Dmax: 11.5 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Talin-1 head amino acids 1-405 Rg histogram Rg, nm
Talin-1, human EOM/RANCH model
Talin-1, human EOM/RANCH model
Talin-1, human EOM/RANCH model
Talin-1, human EOM/RANCH model

Synchrotron SAXS data from solutions of Talin-1 head amino acids 1-405 in 50 mM sodium phosphate, 150 mM NaCl, pH 7.2 were collected on the EMBL P12 beam line at the PETRA III storage ring (Hamburg, Germany) using a Pilatus 2M detector at a sample-detector distance of 3 m and at a wavelength of λ = 0.12399 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 10.3 mg/ml was injected at a 0.25 ml/min flow rate onto a column. 20 successive 0.995 second frames were collected through the sample peak (from a total of 2400) at 10°C. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.

Talin-1, human (TLN1)
Mol. type   Protein
Organism   Homo sapiens
Olig. state   Monomer
Mon. MW   51.3 kDa
 
UniProt   Q9Y490 (1-405)
Sequence   FASTA