Mass: 18.015 Da / Num. of mol.: 460 / Source method: isolated from a natural source / Formula: H2O
Sequence details
1. THE CONSTRUCT WAS EXPRESSED WITH AN N-TERMINAL PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS ...1. THE CONSTRUCT WAS EXPRESSED WITH AN N-TERMINAL PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS REMOVED WITH TEV PROTEASE LEAVING ONLY A GLYCINE (0) FOLLOWED BY RESIDUES 30-225 THE TARGET SEQUENCE. 2. THE STRAIN CLONED (ATCC 19115 / 4B / LI 2) DIFFERS FROM THE STRAIN SEQUENCED IN THE DATABASE REFERENCE (SEROTYPE 4B STR. F2365). DNA SEQUENCING OF THE CLONED CONSTRUCT SHOWS AN ASPARAGINE AT POSITION 72 INSTEAD OF AN ASPARTATE AND A LYSINE AT POSITION 126 INSTEAD OF A THREONINE.
-
Experimental details
-
Experiment
Experiment
Method: X-RAY DIFFRACTION / Number of used crystals: 1
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Sample preparation
Crystal
Density Matthews: 2.33 Å3/Da / Density % sol: 47.24 %
Crystal grow
Temperature: 277 K / Method: vapor diffusion, sitting drop Details: 0.17M ammonium sulfate, 15.00% Glycerol, 25.50% polyethylene glycol 4000, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Monochromator: double crystal Si(111) / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelength
Wavelength: 0.9793 Å / Relative weight: 1
Reflection
Resolution: 1.5→28.754 Å / Num. obs: 64777 / % possible obs: 98 % / Observed criterion σ(I): -3 / Biso Wilson estimate: 18.318 Å2 / Rmerge(I) obs: 0.046 / Net I/σ(I): 13.87
Reflection shell
Resolution (Å)
Rmerge(I) obs
Mean I/σ(I) obs
Num. measured obs
Num. unique obs
Diffraction-ID
% possible all
1.5-1.55
0.63
2
31478
11354
1
97.5
1.55-1.62
0.456
2.6
38388
13824
1
98.1
1.62-1.69
0.339
3.6
34332
11681
1
99
1.69-1.78
0.24
4.8
35899
12423
1
98.5
1.78-1.89
0.155
7.1
32827
12065
1
97.7
1.89-2.04
0.098
11.5
37015
12592
1
98.4
2.04-2.24
0.065
16.2
34754
11965
1
98.4
2.24-2.56
0.045
21.6
34152
12045
1
97
2.56-3.23
0.032
29.6
36720
12447
1
98.6
3.23-28.754
0.022
40.1
35039
12122
1
96.4
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Phasing
Phasing
Method: SAD
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Processing
Software
Name
Version
Classification
NB
MolProbity
3beta29
modelbuilding
PDB_EXTRACT
3.1
dataextraction
SHELX
phasing
SHARP
phasing
XSCALE
December29, 2011
datascaling
PHENIX
1.7.3
refinement
XDS
datareduction
SHELXD
phasing
Refinement
Method to determine structure: SAD / Resolution: 1.5→28.754 Å / Occupancy max: 1 / Occupancy min: 0.21 / SU ML: 0.21 / σ(F): 1.35 / Phase error: 16.79 / Stereochemistry target values: MLHL Details: 1. ATOM RECORD CONTAINS SUM OF TLS AND RESIDUAL B FACTORS. ANISOU RECORD CONTAINS SUM OF TLS AND RESIDUAL U FACTORS. 2. WATERS WERE EXCLUDED FROM AUTOMATIC TLS ASSIGNMENT. 3. A MET- ...Details: 1. ATOM RECORD CONTAINS SUM OF TLS AND RESIDUAL B FACTORS. ANISOU RECORD CONTAINS SUM OF TLS AND RESIDUAL U FACTORS. 2. WATERS WERE EXCLUDED FROM AUTOMATIC TLS ASSIGNMENT. 3. A MET-INHIBITION PROTOCOL WAS USED FOR SELENOMETHIONINE INCORPORATION DURING PROTEIN EXPRESSION. THE OCCUPANCY OF THE SE ATOMS IN THE MSE RESIDUES WAS REDUCED TO 0.75 FOR THE REDUCED SCATTERING POWER DUE TO PARTIAL S-MET I INCORPORATION. 4. A SULFATE (SO4) FROM THE CRYSTALLIZATION SOLUTION WAS MODELED INTO THE STRUCTURE. 5. THE PROGARM QFIT THAT AUTOMATICALLY IDENTIFIES AND MODELS DISCRETE HETEROGENEITY IN ELECTRON DENSITY MAPS WITH A A CONVEX OPTIMIZATION ALGORITHM WAS IMPLEMENTED DURING REFINEMENT TO MODEL SOME OF THE ALTERNATE CONFORMATIONS.
Rfactor
Num. reflection
% reflection
Rfree
0.1929
3257
5.03 %
Rwork
0.1706
-
-
obs
0.1717
64700
98.95 %
Solvent computation
Shrinkage radii: 0.98 Å / VDW probe radii: 1.2 Å / Solvent model: FLAT BULK SOLVENT MODEL / Bsol: 38.902 Å2 / ksol: 0.359 e/Å3
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