Crystal structure of aspartate transcarbamoylase from Trypanosoma cruzi in complex with carbamoyl aspartate (CA) and phosphate (Pi)
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 6JKQ |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 4.6 | 293 | 10% PEG 3350, 0.1 M acetate buffer, pH 4.6, 0.2 M ammonium acetate, 0.01 M cobalt chloride, 3% glycerol |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.44 | 49.56 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 87.992 | α = 90 |
b = 156.983 | β = 119.84 |
c = 88.302 | 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 | ADSC QUANTUM 270 | 2014-01-22 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | PHOTON FACTORY BEAMLINE AR-NW12A | 1.00000 | Photon Factory | AR-NW12A |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge 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 | 2.4 | 50 | 99.9 | 0.122 | 5.5 | 3.5 | 81396 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1 | 2.4 | 2.44 | 99.8 | 0.49 | 2.2 | 3.3 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | R-Free Selection Details | Mean Isotropic B | ||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 6JKQ | 2.4 | 30 | 73258 | 3869 | 95.08 | 0.17937 | 0.17564 | 0.18 | 0.24989 | 0.25 | RANDOM | 37.152 |
Temperature Factor Modeling | ||||||
---|---|---|---|---|---|---|
Anisotropic B[1][1] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[3][3] | |||
-0.67 | 0.1 | -1.04 | 0.99 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.629 |
r_dihedral_angle_4_deg | 17.771 |
r_dihedral_angle_3_deg | 16.141 |
r_dihedral_angle_1_deg | 6.955 |
r_angle_refined_deg | 1.585 |
r_angle_other_deg | 0.826 |
r_chiral_restr | 0.081 |
r_bond_refined_d | 0.012 |
r_gen_planes_refined | 0.006 |
r_bond_other_d | 0.001 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 14687 |
Nucleic Acid Atoms | |
Solvent Atoms | 428 |
Heterogen Atoms | 90 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |
MOLREP | phasing |