Cell wall synthesis protein Wag31: Polymer tbWag31 T73A
Data type: SASBDB experimental dataStatus: PublishedCurve type: Single concentrationLast updated: 2020-08-13T15:33:49.909979+02:00
The cell wall synthesis protein Wag31: Polymer tbWag31 T73A forms a large super-macromolecular assembly (supported by atomic force microscopy, AFM) and as a result there is a very limited angular range to estimate the radius of gyration, Rg, using the Guinier approximation. In addition, the quoted monomer molecular weight does not apply to this sample. The probable distribution of real-space scattering pair vector lengths (p(r) vs r profile or PDDF) represents the cross-sectional pair distribution function for rod-like particle (option 4 in GNOM) and the subsequent data validation tools for this entry are based on the corresponding cross section parameters (Rg of cross section and Dmax of cross section). The I(s) is recorded in a relative scale in kDa units assuming a 1 mg/ml sample concentration. However the experimental concentration was found to be 2.7 mg/ml (assessed using a Bradford assay).
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1. Samples, Components and Experimental Conditions Sample & Experiment
2. Measurements Reported by SASBDB Reported Results
Metric
Method
Value
Uncertainty
Unit
dmax
P(r)
13.55
—
nm
i0
Guinier
990.33
17.9
arbitrary
i0
P(r)
34.66
0.08
arbitrary
mw
Experimental
29.9
—
kDa
rg
Guinier
21.8
0.409
nm
rg
P(r)
3.32
0.021
nm
These values are reported by SASBDB; SAXSdb did not recalculate them from the experimental curve.
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3. Source Fits and Models Source Fits & Models
This entry has no source fit record.
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4. Source File Index Source Files
Category
Path
Download status
Size
curve
sasbdb/entries/c2/sasdec2/source/SASDEC2.dat
downloaded
59076
full_entry_zip
sasbdb/entries/c2/sasdec2/source/SASDEC2.zip
downloaded
26264
pddf
sasbdb/entries/c2/sasdec2/source/SASDEC2.out
downloaded
32828
sascif
sasbdb/entries/c2/sasdec2/source/SASDEC2.sascif
downloaded
87643
summary
sasbdb/entries/c2/sasdec2/source/summary.json
downloaded
7411
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5. Experiment Description and Publication Experiment & Publication
Original Experiment Description
Synchrotron SAXS data from solutions of the polymeric form of Wag31 T73A in 50mM Tris, 300mM NaCl, 10% glycerol, 1mM EDTA (ethylene diamine tetra acetic acid), 5mM β-mercaptoethanol (BME), pH 7.5 were collected on the BM29 beam line at the ESRF (Grenoble, France) using a Pilatus 1M detector at a sample-detector distance of 2.9 m and at a wavelength of λ = 0.1 nm (l(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). One solute concentration of 2.70 mg/ml was measured at 4°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.
Related Publication
Title
Higher order assembling of the mycobacterial polar growth factor DivIVA/Wag31.
Authors
Choukate K, Gupta A, Basu B, Virk K, Ganguli M, Chaudhuri B
DOI / PMID
10.1016/j.jsb.2019.107429 / 31778770
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6. Complete Source Record Complete Source Record
The following content comes directly from the SASBDB entry. Missing values are shown as “—”; SAXSdb does not infer undeclared units.
The cell wall synthesis protein Wag31: Polymer tbWag31 T73A forms a large super-macromolecular assembly (supported by atomic force microscopy, AFM) and as a result there is a very limited angular range to estimate the radius of gyration, Rg, using the Guinier approximation. In addition, the quoted monomer molecular weight does not apply to this sample. The probable distribution of real-space scattering pair vector lengths (p(r) vs r profile or PDDF) represents the cross-sectional pair distribution function for rod-like particle (option 4 in GNOM) and the subsequent data validation tools for this entry are based on the corresponding cross section parameters (Rg of cross section and Dmax of cross section). The I(s) is recorded in a relative scale in kDa units assuming a 1 mg/ml sample concentration. However the experimental concentration was found to be 2.7 mg/ml (assessed using a Bradford assay).
experiment_description
Synchrotron SAXS data from solutions of the polymeric form of Wag31 T73A in 50mM Tris, 300mM NaCl, 10% glycerol, 1mM EDTA (ethylene diamine tetra acetic acid), 5mM β-mercaptoethanol (BME), pH 7.5 were collected on the BM29 beam line at the ESRF (Grenoble, France) using a Pilatus 1M detector at a sample-detector distance of 2.9 m and at a wavelength of λ = 0.1 nm (l(s) vs s, where s = 4πsinθ/λ, and 2θ is the scattering angle). One solute concentration of 2.70 mg/ml was measured at 4°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.