Molecular and cellular insight into Escherichia coli SslE and its role during biofilm maturation

Corsini P, Wang S, Rehman S, Fenn K, Sagar A, Sirovica S, Cleaver L, Edwards-Gayle C, Mastroianni G, Dorgan B, Sewell L, Lynham S, Iuga D, Franks W, Jarvis J, Carpenter G, Curtis M, Bernadó P, Darbari V, Garnett J, npj Biofilms and Microbiomes 8(1) (2022) DOI

SASDMU6 – The N1 domain of accessory colonization factor SslE

Accessory colonization factor
MWI(0) 17 kDa
MWexpected 17 kDa
VPorod 28 nm3
log I(s) 5.75×10-3 5.75×10-4 5.75×10-5 5.75×10-6
Accessory colonization factor small angle scattering data  s, nm-1
ln I(s)
Accessory colonization factor Guinier plot ln 5.76×10-3 Rg: 2.0 nm 0 (2.0 nm)-2 s2
(sRg)2I(s)/I(0)
Accessory colonization factor Kratky plot 1.104 0 3 sRg
p(r)
Accessory colonization factor pair distance distribution function Rg: 2.1 nm 0 Dmax: 7.0 nm

Data validation


Fits and models


log I(s)
 s, nm-1
Accessory colonization factor DAMFILT model
Accessory colonization factor DAMMIN model

Synchrotron SAXS data from solutions of the SslE N1 domain in 20 mM Tris, 200 mM NaCl, pH 8 were collected on the B21 beam line at the Diamond Light Source (Didcot, UK) using a Pilatus 2M detector at a wavelength of λ = 0.1 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 60.00 μl sample at 10 mg/ml was injected at a 0.16 ml/min flow rate onto a Shodex KW403 column at 25°C. 620 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.

The bead models displayed in this entry show: Top, a bead-occupancy and volume corrected spatial representation of the protein calculated from the alignment of several individual models (DAMFILT model). Bottom, an individual DAMMIN model representative from the model cohort (with the corresponding individual model fit displayed to the left).

Accessory colonization factor
Mol. type   Protein
Organism   Escherichia coli (strain ATCC 9637 / CCM 2024 / DSM 1116 / LMG 11080 / NBRC 13500 / NCIMB 8666 / NRRL B-766 / W)
Olig. state   Monomer
Mon. MW   16.9 kDa
 
UniProt   E0IW31 (90-234)
Sequence   FASTA