- PDB-3msw: Crystal structure of a Protein with unknown function (BF3112) fro... -
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Basic information
Entry
Database: PDB / ID: 3msw
Title
Crystal structure of a Protein with unknown function (BF3112) from Bacteroides fragilis NCTC 9343 at 1.90 A resolution
Components
uncharacterized protein
Keywords
STRUCTURAL GENOMICS / UNKNOWN FUNCTION / Joint Center for Structural Genomics / JCSG / Protein Structure Initiative / PSI-2
Function / homology
Lipocalin - #720 / Protein of unknown function DUF3836 / Family of unknown function (DUF3836) / Lipocalin / Beta Barrel / Mainly Beta / R-1,2-PROPANEDIOL / Exported protein
Function and homology information
Biological species
Bacteroides fragilis (bacteria)
Method
X-RAY DIFFRACTION / SYNCHROTRON / MAD / Resolution: 1.9 Å
Mass: 18.015 Da / Num. of mol.: 125 / Source method: isolated from a natural source / Formula: H2O
Has protein modification
Y
Sequence details
THE CONSTRUCT (RESIDUES 26-269) WAS EXPRESSED WITH A PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG ...THE CONSTRUCT (RESIDUES 26-269) WAS EXPRESSED WITH A PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS REMOVED WITH TEV PROTEASE LEAVING ONLY A GLYCINE (0) FOLLOWED BY THE TARGET SEQUENCE.
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Experimental details
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Experiment
Experiment
Method: X-RAY DIFFRACTION / Number of used crystals: 1
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Sample preparation
Crystal
Density Matthews: 2.48 Å3/Da / Density % sol: 50.33 %
Crystal grow
Temperature: 277 K / pH: 4.5 Details: 40.000000000% 1,2-propanediol, 0.1M Acetate pH 4.5, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Monochromator: SINGLE CRYSTAL SI(111) BENT MONOCHROMATOR (HORIZONTAL FOCUSING) Protocol: MAD / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelength
ID
Wavelength (Å)
Relative weight
1
0.91837
1
2
0.97925
1
3
0.97864
1
Reflection
Resolution: 1.9→28.31 Å / Num. obs: 13924 / % possible obs: 98.2 % / Observed criterion σ(I): -3 / Biso Wilson estimate: 25.367 Å2 / Rmerge(I) obs: 0.059 / Net I/σ(I): 9.47
Reflection shell
Resolution: 1.9→1.97 Å / Rmerge(I) obs: 0.584 / Mean I/σ(I) obs: 1.5 / % possible all: 95.6
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Phasing
Phasing
Method: MAD
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Processing
Software
Name
Version
Classification
NB
MolProbity
3beta29
modelbuilding
PHENIX
refinement
SHELX
phasing
XSCALE
datascaling
PDB_EXTRACT
3.006
dataextraction
XDS
datareduction
SHELXD
phasing
autoSHARP
phasing
BUSTER
2.8.0
refinement
Refinement
Method to determine structure: MAD / Resolution: 1.9→28.31 Å / Cor.coef. Fo:Fc: 0.9417 / Cor.coef. Fo:Fc free: 0.9115 / Occupancy max: 1 / Occupancy min: 0.37 / Cross valid method: THROUGHOUT / σ(F): 0 Details: 1. 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 ...Details: 1. 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 INCORPORATION. 2. 1,2-PROPANEDIOL (PGR) AND CHLORIDE MODELED ARE PRESENT CRYO OR PROTEIN SOLUTIONS. 3. THE DENSITY FOR RESIDUES 51-56 ARE POOR AND AMBIGUOUS, THE MODEL IN THIS REGION IS TENTATIVE AND MAY CONTAIN ERRORS.
Rfactor
Num. reflection
% reflection
Selection details
Rfree
0.2266
695
5 %
RANDOM
Rwork
0.1974
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obs
0.1987
13888
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Displacement parameters
Biso mean: 39.2 Å2
Baniso -1
Baniso -2
Baniso -3
1-
-0.0073 Å2
0 Å2
0 Å2
2-
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-3.9098 Å2
0 Å2
3-
-
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3.9171 Å2
Refinement step
Cycle: LAST / Resolution: 1.9→28.31 Å
Protein
Nucleic acid
Ligand
Solvent
Total
Num. atoms
1136
0
18
125
1279
Refine LS restraints
Refine-ID
Type
Dev ideal
Number
Restraint function
Weight
X-RAY DIFFRACTION
t_bond_d
0.01
1225
HARMONIC
2
X-RAY DIFFRACTION
t_angle_deg
1.04
1667
HARMONIC
2
X-RAY DIFFRACTION
t_dihedral_angle_d
446
SINUSOIDAL
2
X-RAY DIFFRACTION
t_incorr_chiral_ct
X-RAY DIFFRACTION
t_pseud_angle
X-RAY DIFFRACTION
t_trig_c_planes
42
HARMONIC
2
X-RAY DIFFRACTION
t_gen_planes
175
HARMONIC
5
X-RAY DIFFRACTION
t_it
1225
HARMONIC
20
X-RAY DIFFRACTION
t_nbd
1
SEMIHARMONIC
5
X-RAY DIFFRACTION
t_omega_torsion
X-RAY DIFFRACTION
t_other_torsion
X-RAY DIFFRACTION
t_improper_torsion
X-RAY DIFFRACTION
t_chiral_improper_torsion
X-RAY DIFFRACTION
t_sum_occupancies
X-RAY DIFFRACTION
t_utility_distance
X-RAY DIFFRACTION
t_utility_angle
X-RAY DIFFRACTION
t_utility_torsion
X-RAY DIFFRACTION
t_ideal_dist_contact
LS refinement shell
Resolution: 1.9→2.05 Å / Total num. of bins used: 7
Rfactor
Num. reflection
% reflection
Rfree
0.2187
150
5.42 %
Rwork
0.2088
2618
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all
0.2094
2768
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Refinement TLS params.
Method: refined / Origin x: 3.8887 Å / Origin y: 3.1692 Å / Origin z: 0.3572 Å
11
12
13
21
22
23
31
32
33
T
-0.1419 Å2
-0.0135 Å2
-0.0235 Å2
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0.1151 Å2
-0.0004 Å2
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-
-0.1257 Å2
L
1.2116 °2
-0.2725 °2
-0.8711 °2
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1.2949 °2
0.2617 °2
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-
1.4692 °2
S
-0.1818 Å °
0.0674 Å °
-0.0997 Å °
-0.0168 Å °
0.0705 Å °
0.0841 Å °
0.0814 Å °
-0.1493 Å °
0.1113 Å °
Refinement TLS group
Selection details: { A|* }
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