4M3P
Betaine-Homocysteine S-Methyltransferase from Homo sapiens complexed with Homocysteine
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1LT8 | PDB ENTRY 1LT8 |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | EVAPORATION | 7.5 | 277 | 20.0% PEG5000 MME, 0.2 M sodium/potassium tartrate, 1.4% 1,2,3-heptanetriol, pH 7.5, EVAPORATION, temperature 277K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.31 | 46.76 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 86.097 | α = 90 |
b = 102.617 | β = 101.76 |
c = 96.228 | γ = 90 |
Symmetry | |
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Space Group | P 1 21 1 |
Diffraction
Diffraction Experiment | ||||||||||||||
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | CCD | MARMOSAIC 300 mm CCD | K-B pair of biomorph mirrors for vertical and horizontal focusing | 2006-12-18 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 23-ID-D | 1.0332 | APS | 23-ID-D |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | R Sym I (Observed) | Net I Over Average Sigma (I) | Redundancy | Number Reflections (All) | Number Reflections (Observed) | Observed Criterion Sigma (F) | Observed Criterion Sigma (I) | B (Isotropic) From Wilson Plot | |||||||
1 | 1.895 | 45.222 | 98.2 | 0.083 | 0.072 | 13.7 | 4.1 | 129862 | 128582 | 34.8 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
1 | 1.895 | 2.01 | 90 | 0.374 | 0.369 | 4 | 4.1 | 19787 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | |||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | PDB ENTRY 1LT8 | 1.895 | 45.222 | 123327 | 122106 | 6476 | 99.01 | 0.18214 | 0.18021 | 0.21852 | RANDOM | 33.943 |
Temperature Factor Modeling | ||||||
---|---|---|---|---|---|---|
Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
-0.14 | 0.42 | 2.05 | -1.74 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 32.218 |
r_dihedral_angle_4_deg | 17.951 |
r_dihedral_angle_3_deg | 15.009 |
r_dihedral_angle_1_deg | 5.516 |
r_angle_refined_deg | 1.356 |
r_angle_other_deg | 0.806 |
r_chiral_restr | 0.082 |
r_bond_refined_d | 0.011 |
r_gen_planes_refined | 0.007 |
r_bond_other_d | 0.001 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 11469 |
Nucleic Acid Atoms | |
Solvent Atoms | 644 |
Heterogen Atoms | 60 |
Software
Software | |
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Software Name | Purpose |
Blu-Ice | data collection |
EPMR | phasing |
REFMAC | refinement |
XDS | data reduction |
XSCALE | data scaling |