A: ketosteroid isomerase-like protein B: ketosteroid isomerase-like protein C: ketosteroid isomerase-like protein D: ketosteroid isomerase-like protein hetero molecules
Mass: 18.015 Da / Num. of mol.: 215 / Source method: isolated from a natural source / Formula: H2O
Has protein modification
Y
Sequence details
SEQUENCE THE CONSTRUCT WAS EXPRESSED WITH A PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS ...SEQUENCE THE CONSTRUCT 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: 4.65 Å3/Da / Density % sol: 73.57 %
Crystal grow
Temperature: 277 K / Method: vapor diffusion, sitting drop / pH: 4.6 Details: 2.0000M NaCl, 0.1M Acetate pH 4., NANODROP, pH 4.6, VAPOR DIFFUSION, SITTING DROP, temperature 277K
Type: MARMOSAIC 325 mm CCD / Detector: CCD / Date: Mar 4, 2008 / Details: Flat mirror (vertical focusing)
Radiation
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
0.97879
1
3
0.97932
1
Reflection
Resolution: 2.4→29.841 Å / Num. obs: 42374 / % possible obs: 98.7 % / Redundancy: 3.7 % / Biso Wilson estimate: 54.294 Å2 / Rmerge(I) obs: 0.078 / Rsym value: 0.078 / Net I/σ(I): 6.9
Reflection shell
Diffraction-ID: 1
Resolution (Å)
Redundancy (%)
Rmerge(I) obs
Mean I/σ(I) obs
Num. measured all
Num. unique all
Rsym value
% possible all
2.4-2.46
3.7
0.658
1.2
11641
3119
0.658
99.8
2.46-2.53
3.7
0.569
1.3
11354
3052
0.569
99.6
2.53-2.6
3.7
0.463
1.7
11190
2989
0.463
99.7
2.6-2.68
3.7
0.359
2.1
10705
2879
0.359
99.6
2.68-2.77
3.7
0.271
2.8
10463
2795
0.271
99.3
2.77-2.87
3.7
0.224
3.4
10164
2715
0.224
99.5
2.87-2.98
3.8
0.185
4.1
9838
2620
0.185
99.1
2.98-3.1
3.7
0.132
5.7
9345
2500
0.132
99.4
3.1-3.24
3.7
0.101
7.1
9112
2430
0.101
99
3.24-3.39
3.8
0.084
8.1
8641
2293
0.084
99.1
3.39-3.58
3.8
0.073
8.6
8272
2195
0.073
98.8
3.58-3.79
3.7
0.065
8.6
7644
2039
0.065
98.4
3.79-4.06
3.8
0.062
9.2
7444
1971
0.062
98.3
4.06-4.38
3.8
0.053
10.4
6771
1789
0.053
97.7
4.38-4.8
3.8
0.043
12.2
6281
1660
0.043
97.4
4.8-5.37
3.8
0.037
13.8
5728
1510
0.037
97.2
5.37-6.2
3.8
0.046
12.1
4977
1324
0.046
97
6.2-7.59
3.8
0.051
10.2
4273
1139
0.051
97.1
7.59-10.73
3.7
0.038
14.7
3252
876
0.038
95.5
10.73-29.84
3.5
0.042
9.5
1687
479
0.042
90.4
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Phasing
Phasing
Method: MAD
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Processing
Software
Name
Version
Classification
NB
REFMAC
5.2.0019
refinement
PHENIX
refinement
SOLVE
phasing
MolProbity
3beta29
modelbuilding
SCALA
datascaling
PDB_EXTRACT
3.004
dataextraction
MOSFLM
datareduction
Refinement
Method to determine structure: MAD / Resolution: 2.4→29.841 Å / Cor.coef. Fo:Fc: 0.968 / Cor.coef. Fo:Fc free: 0.95 / SU B: 10.661 / SU ML: 0.129 / TLS residual ADP flag: LIKELY RESIDUAL / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R: 0.195 / ESU R Free: 0.176 Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES Details: 1. HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. 2. ATOM RECORD CONTAINS RESIDUAL B FACTORS ONLY. 3. A MET-INHIBITION PROTOCOL WAS USED FOR SELENOMETHIONINE INCORPORATION DURING PROTEIN ...Details: 1. HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. 2. ATOM RECORD CONTAINS RESIDUAL B FACTORS ONLY. 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 TO ACCOUNT FOR THE REDUCED SCATTERING POWER DUE TO PARTIAL S-MET INCORPORATION. 4. AN UNKNOWN LIGAND (UNL) WAS MODELED AT THE PUTATIVE ACTIVE SITE ON EACH SUBUNIT IN THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT. 5. GLYCEROL MOLECULES USED AS A CRYOPROTECTANT WERE MODELED INTO THE STRUCTURE. UNEXPLAINED ELECTRON DENSITY AT THE N-TERMINAL REGION OF SUBUNIT B WAS NOT MODELED.
Rfactor
Num. reflection
% reflection
Selection details
Rfree
0.219
2140
5.1 %
RANDOM
Rwork
0.182
-
-
-
obs
0.184
42374
98.3 %
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Solvent computation
Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
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