The basic keratin 10-binding domain of the virulence-associated pneumococcal serine-rich protein PsrP adopts a novel MSCRAMM fold.

Schulte T, Löfling J, Mikaelsson C, Kikhney A, Hentrich K, Diamante A, Ebel C, Normark S, Svergun D, Henriques-Normark B, Achour A, Open Biol 4:130090 (2014) Europe PMC

SASDAR3 – PsrP functional binding region

Functional binding region (187-385) of the pneumococcal serine-rich repeat protein
MWexperimental 18 kDa
MWexpected 22 kDa
VPorod 37 nm3
log I(s) 1.67×101 1.67×100 1.67×10-1 1.67×10-2
Functional binding region (187-385) of the pneumococcal serine-rich repeat protein small angle scattering data  s, nm-1
ln I(s)
Functional binding region (187-385) of the pneumococcal serine-rich repeat protein Guinier plot ln 1.67×101 Rg: 2.3 nm 0 (2.3 nm)-2 s2
(sRg)2I(s)/I(0)
Functional binding region (187-385) of the pneumococcal serine-rich repeat protein Kratky plot 1.104 0 3 sRg
p(r)
Functional binding region (187-385) of the pneumococcal serine-rich repeat protein pair distance distribution function Rg: 2.3 nm 0 Dmax: 7.7 nm

Data validation


Fits and models


log I(s)
 s, nm-1
PsrP functional binding region Rg histogram Rg, nm
Functional binding region (187-385) of the pneumococcal serine-rich repeat protein EOM/RANCH model
Functional binding region (187-385) of the pneumococcal serine-rich repeat protein EOM/RANCH model
Functional binding region (187-385) of the pneumococcal serine-rich repeat protein EOM/RANCH model
Functional binding region (187-385) of the pneumococcal serine-rich repeat protein EOM/RANCH model
Functional binding region (187-385) of the pneumococcal serine-rich repeat protein EOM/RANCH model

Synchrotron SAXS data from solutions of PsrP functional binding region in 20 mM sodium citrate 250 mM NaCl 2.5 % Glycerol, pH 5.5 were collected on the EMBL X33 beam line at the DORIS III, DESY storage ring (Hamburg, Germany) using a Pilatus 1M-W detector at a sample-detector distance of 2.7 m and at a wavelength of λ = 0.15 nm (I(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). Solute concentrations ranging between 1.1 and 8.7 mg/ml were measured at 10°C. Eight successive 15 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. The low angle data collected at lower concentration were merged with the highest concentration high angle data to yield the final composite scattering curve.

Tags: X33
Functional binding region (187-385) of the pneumococcal serine-rich repeat protein (PsrP BR(187-385))
Mol. type   Protein
Organism   Streptococcus pneumoniae
Olig. state   Monomer
Mon. MW   22.1 kDa
 
UniProt   A0A0H2URK1 (187-385)
Sequence   FASTA