Structural insights into the formation of repulsive netrin guidance complexes.

Priest JM, Nichols EL, Smock RG, Hopkins JB, Mendoza JL, Meijers R, Shen K, Özkan E, Sci Adv 10(7):eadj8083 (2024) Europe PMC

SASDQK9 – An assembly between C-terminal truncated Netrin UNC-6, the extracellular domains of Netrin receptor UNC-5 and UNC-40 with porcine intestinal mucosa heparin (UNC-6ΔC-heparin-UNC-5 ECD-UNC-40 ECD complex)

Netrin unc-6
Isoform a of Netrin receptor unc-5
Heparin, porcine intestinal mucosa
Netrin receptor unc-40
MWexperimental 1590 kDa
MWexpected 223 kDa
VPorod 3410 nm3
log I(s) 3.08×10-2 3.08×10-3 3.08×10-4 3.08×10-5
Netrin unc-6 Isoform a of Netrin receptor unc-5 Heparin, porcine intestinal mucosa Netrin receptor unc-40 small angle scattering data  s, nm-1
ln I(s)
Netrin unc-6 Isoform a of Netrin receptor unc-5 Heparin, porcine intestinal mucosa Netrin receptor unc-40 Guinier plot ln 3.09×10-2 Rg: 10.6 nm 0 (10.6 nm)-2 s2
(sRg)2I(s)/I(0)
Netrin unc-6 Isoform a of Netrin receptor unc-5 Heparin, porcine intestinal mucosa Netrin receptor unc-40 Kratky plot 1.104 0 3 sRg
p(r)
Netrin unc-6 Isoform a of Netrin receptor unc-5 Heparin, porcine intestinal mucosa Netrin receptor unc-40 pair distance distribution function Rg: 10.7 nm 0 Dmax: 36.5 nm

Data validation


There are no models related to this curve.

Synchrotron SAXS data from solutions of the UNC-6ΔC-heparin-UNC-5 ECD-UNC-40 ECD complex in 10 mM HEPES pH 7.2, 150 mM NaCl, 100 mM MgSO4 were collected on the BioCAT 18ID beam line at the Advanced Photon Source (APS), Argonne National Laboratory (Argonne, USA) using a Eiger2 XE 9M (Dectris) detector at a sample-detector distance of 3.7 m and at a wavelength of λ = 0.1033 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 300.00 μl sample at 3 mg/ml was injected at a 0.60 ml/min flow rate onto a GE Superose 6 Increase 10/300 column at 22°C. 2700 successive 0.500 second frames were collected over 45 minutes. The data were normalized to the intensity of the transmitted beam and radially averaged; the scattering of the solvent-blank was subtracted.

Netrin unc-6 (UNC-6)
Mol. type   Protein
Organism   Caenorhabditis elegans
Olig. state   Monomer
Mon. MW   51.9 kDa
 
UniProt   P34710 (22-461)
Sequence   FASTA
 
Isoform a of Netrin receptor unc-5 (UNC-5 ECD)
Mol. type   Protein
Organism   Caenorhabditis elegans
Olig. state   Monomer
Mon. MW   37.9 kDa
 
UniProt   Q26261-1 (1-331)
Sequence   FASTA
 
Heparin, porcine intestinal mucosa (Heparin)
Mol. type   Other
Organism   Sus scrofa domesticus
Olig. state   Monomer
Mon. MW   15 kDa
Netrin receptor unc-40 (UNC-40 ECD)
Mol. type   Protein
Organism   Caenorhabditis elegans
Olig. state   Monomer
Mon. MW   118.1 kDa
 
UniProt   G5EF96 (23-1082)
Sequence   FASTA