Staphylococcus aureus thiaminase II: oligomerization warrants proteolytic protection against serine proteases.

Begum A, Drebes J, Kikhney A, Müller IB, Perbandt M, Svergun D, Wrenger C, Betzel C, Acta Crystallogr D Biol Crystallogr 69(Pt 12):2320-9 (2013) Europe PMC

SASDB35 – Staphylococcus aureus thiaminase II

Thiaminase type II enzyme
MWexperimental 105 kDa
MWexpected 107 kDa
VPorod 168 nm3
log I(s) 8.41×101 8.41×100 8.41×10-1 8.41×10-2
Thiaminase type II enzyme small angle scattering data  s, nm-1
ln I(s)
Thiaminase type II enzyme Guinier plot ln 8.41×101 Rg: 3.4 nm 0 (3.4 nm)-2 s2
(sRg)2I(s)/I(0)
Thiaminase type II enzyme Kratky plot 1.104 0 3 sRg
p(r)
Thiaminase type II enzyme pair distance distribution function Rg: 3.3 nm 0 Dmax: 11 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Thiaminase type II enzyme PDB (PROTEIN DATA BANK) model

Synchrotron SAXS data from solutions of Staphylococcus aureus thiaminase II in 100 mM Tris-HCl, pH 7.5 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 1.2 and 7.2 mg/ml were measured at 5°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 concentrations were extrapolated to infinite dilution and merged with the higher concentration data to yield the final composite scattering curve.

Storage temperature = UNKNOWN

Tags: X33
Thiaminase type II enzyme (SaTenA)
Mol. type   Protein
Organism   Staphylococcus aureus
Olig. state   Tetramer
Mon. MW   26.8 kDa
 
UniProt   Q6GEY1
Sequence   FASTA
 
PDB ID   4FN6