Molecular Insights on the Assembling of ParB1 and ParB1- parS1 Partition Complex

Anu A, Lata S, Chaudhuri B, ACS Bio & Med Chem Au (2026) DOI

SASDVP3 – Probable chromosome-partitioning protein ParB linker triple mutant (vcParB1-linker) at 6 mg/ml

Probable chromosome-partitioning protein ParB (P235G, D237G, K239A)
MWexperimental 91 kDa
MWexpected 68 kDa
VPorod 206 nm3
log I(s) 6.12×102 6.12×101 6.12×100 6.12×10-1
Probable chromosome-partitioning protein ParB (P235G, D237G, K239A) small angle scattering data  s, nm-1
ln I(s)
Probable chromosome-partitioning protein ParB (P235G, D237G, K239A) Guinier plot ln 6.13×102 Rg: 4.8 nm 0 (4.8 nm)-2 s2
(sRg)2I(s)/I(0)
Probable chromosome-partitioning protein ParB (P235G, D237G, K239A) Kratky plot 1.104 0 3 sRg
p(r)
Probable chromosome-partitioning protein ParB (P235G, D237G, K239A) pair distance distribution function Rg: 5.2 nm 0 Dmax: 22 nm

Data validation


There are no models related to this curve.

Synchrotron SAXS data from solutions of Probable chromosome-partitioning protein ParB linker triple mutant (vcParB1-linker) at 6 mg/ml in 20 mM Tris pH 7.5, 100 mM NaCl, 5% glycerol, 1 mM EDTA, 5 mM BME, 5 mM MgCl2 were collected on the BM29 beam line at the ESRF storage ring (Grenoble, France) using a Pilatus 1M detector at a sample-detector distance of 2.8 m and at a wavelength of λ = 0.0999 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). One solute concentration of 6.00 mg/ml was measured at 20°C. 10 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.

Probable chromosome-partitioning protein ParB (P235G, D237G, K239A) (vcParB1-linker)
Mol. type   Protein
Organism   Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)
Olig. state   Dimer
Mon. MW   34.1 kDa
 
UniProt   Q9KNG7 (2-293)
Sequence   FASTA