4MXR
Crystal structure of Trypanosoma cruzi formiminoglutamase with Mn2+2
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2A0M | PDB ENTRY 2A0M |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 4.9 | 294 | A 4 UL drop of protein solution [10 mg/mL protein, 50 mM bicine (pH 8.5), 100 UM MnCl2, 1 mM TCEP] was mixed with a 4 UL drop of precipitant solution [31% PEG 300, 0.1 M sodium acetate (pH 4.9)] on a siliconized cover slide and equilibrated against a 500 UL reservoir of precipitant solution at 294K. The yielded crystal is apo. To obtain the Mn2+2 bound form, this apo-crystal was soaked with 5 mM MnCl2 in 0.1 M sodium malonate (pH 8.0), 27% PEG 3350) for 24 hours, VAPOR DIFFUSION, HANGING DROP |
Crystal Properties | |
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Matthews coefficient | Solvent content |
1.97 | 37.6 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 128.922 | α = 90 |
b = 128.922 | β = 90 |
c = 85.377 | γ = 120 |
Symmetry | |
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Space Group | H 3 |
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 | IMAGE PLATE | RIGAKU RAXIS IV++ | mirrors | 2013-02-17 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU RU200 | 1.5418 |
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 | 1.85 | 50 | 99.2 | 0.059 | 0.059 | 14.162 | 2.5 | 44906 | -3 |
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 | 1.85 | 1.92 | 98.8 | 0.438 | 0.438 | 2.013 | 2.4 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | 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 2A0M | 1.849 | 21.964 | 0.06 | 44906 | 42190 | 2123 | 93.23 | 0.1882 | 0.1865 | 0.2169 | random |
Temperature Factor Modeling | ||||||
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Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
-1.9726 | -1.9726 | 4.0766 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 14.737 |
f_angle_d | 0.795 |
f_chiral_restr | 0.059 |
f_bond_d | 0.004 |
f_plane_restr | 0.004 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 4552 |
Nucleic Acid Atoms | |
Solvent Atoms | 265 |
Heterogen Atoms | 10 |
Software
Software | |
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Software Name | Purpose |
CrystalClear | data collection |
PHASER | phasing |
PHENIX | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |