E. coli L-aspartate-alpha-decarboxylase mutant N72Q to a resolution of 1.9 Angstroms
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
---|---|---|---|
Type | Source | Accession Code | Details |
experimental model | PDB | 1AW8 | PDB ENTRY 1AW8 |
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6.8 | ADC.PANZ COMPLEX WAS PREPARED IN A 10: 11 RATIO AT A FINAL CONCENTRATION OF 5.7 MG/ML WITH A 2-FOLD MOLAR EXCESS (RELATIVE TO PANZ) OF ACETYLCOA IN 0.05 M TRIS-HCL PH 7.69, 0.1 M NACL, 0.1 MM DTT. THIS WAS MIXED IN A 1:1 RATIO WITH RESERVOIR SOLUTION (0.2 M POTASSIUM THIOCYANATE, 0.1 M BIS- TRIS PROPANE PH 6.8, 20 % W/V PEG 3350) AND CRYSTALLIZED BY HANGING DROP VAOUR DIFFUSION (4 UL DROPLET OVER A 1 ML RESERVOIR). |
Crystal Properties | |
---|---|
Matthews coefficient | Solvent content |
2.38 | 48.4 |
Crystal Data
Unit Cell | |
---|---|
Length ( ? ) | Angle ( ? ) |
a = 71.35 | ¦Á = 90 |
b = 71.35 | ¦Â = 90 |
c = 112.31 | ¦Ã = 90 |
Symmetry | |
---|---|
Space Group | I 4 2 2 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | IMAGE PLATE | RIGAKU IMAGE PLATE | VARIMAX | 2014-09-02 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU MICROMAX-007 HF |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 1.9 | 23.26 | 99.9 | 0.14 | 9.9 | 6.4 | 11805 | 10.3 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 1.9 | 1.94 | 100 | 0.64 | 2.6 | 5.8 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | PDB ENTRY 1AW8 | 1.9 | 60.22 | 11235 | 552 | 99.75 | 0.18894 | 0.18622 | 0.2 | 0.24418 | 0.26 | RANDOM | 24.788 |
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] | |
0.6 | 0.6 | -1.2 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 29.232 |
r_dihedral_angle_3_deg | 14.51 |
r_dihedral_angle_4_deg | 10.197 |
r_dihedral_angle_1_deg | 6.636 |
r_scbond_it | 3.244 |
r_mcangle_it | 2.968 |
r_mcbond_it | 2.039 |
r_mcbond_other | 2.029 |
r_angle_refined_deg | 1.737 |
r_angle_other_deg | 0.826 |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | 942 |
Nucleic Acid Atoms | |
Solvent Atoms | 122 |
Heterogen Atoms | 13 |
Software
Software | |
---|---|
Software Name | Purpose |
REFMAC | refinement |
XDS | data reduction |
XDS | data scaling |
MOLREP | phasing |