Characterization of synthetic antigen binding fragments targeting Toc75 for the isolation of TOC in A. thaliana and P. sativum

Srinivasan K, Erramilli S, Chakravarthy S, Gonzalez A, Kossiakoff A, Noinaj N, Structure (2023) DOI

SASDRX5 – Arabidopsis thaliana Toc75 Potra domains bound to synthetic antigen binding fragment sAB tc1

Protein TOC75-3, chloroplastic
synthetic antigen binding fragment tc1
MWexperimental 83 kDa
MWexpected 83 kDa
VPorod 125 nm3
log I(s) 3.48×10-2 3.48×10-3 3.48×10-4 3.48×10-5
Protein TOC75-3, chloroplastic synthetic antigen binding fragment tc1 small angle scattering data  s, nm-1
ln I(s)
Protein TOC75-3, chloroplastic synthetic antigen binding fragment tc1 Guinier plot ln 3.49×10-2 Rg: 3.8 nm 0 (3.8 nm)-2 s2
(sRg)2I(s)/I(0)
Protein TOC75-3, chloroplastic synthetic antigen binding fragment tc1 Kratky plot 1.104 0 √3 sRg
p(r)
Protein TOC75-3, chloroplastic synthetic antigen binding fragment tc1 pair distance distribution function Rg: 3.9 nm 0 Dmax: 14 nm

Data validation

There are no models related to this curve.

Synchrotron SAXS data from solutions of Arabidopsis thaliana Toc75 Potra domains bound to synthetic antigen binding fragment sAB tc1 in phosphate buffered saline, pH 7.5 were collected on the BioCAT 18ID beam line at the Advanced Photon Source (APS), Argonne National Laboratory storage ring (Lemont, IL, USA) using a Pilatus3 X 1M detector at a sample-detector distance of 3.7 m and at a wavelength of λ = 0.103 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 sample was injected onto a GE Superdex 200 Increase 10/300 column at 25°C. 10 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.

Sample injection volume = UNKNOWN. Flow rate = UNKNOWN

Protein TOC75-3, chloroplastic (atToc75)
Mol. type   Protein
Organism   Arabidopsis thaliana
Olig. state   Monomer
Mon. MW   35.3 kDa
 
UniProt   Q9STE8 (141-449)
Sequence   FASTA
 
synthetic antigen binding fragment tc1 (sAB tc1)
Mol. type   Protein
Organism   synthetic construct
Olig. state   Monomer
Mon. MW   47.8 kDa
Sequence   FASTA