CRYSTAL STRUCTURE OF A TERNARY COMPLEX OF E. COLI HPPK WITH AMP AND 6-HYDROXYMETHYLPTERIN-DIPHOSPHATE AT 1.56 ANGSTROM RESOLUTION
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 1QON | |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 5.2 | 292 | PEG4000, ACETATE, GLYCEROL, pH 5.2, VAPOR DIFFUSION, HANGING DROP, temperature 292.0K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 1.92 | 33.2 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 79.689 | α = 90 |
| b = 52.918 | β = 103.46 |
| c = 36.56 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | C 1 2 1 |
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 | MARRESEARCH | OSMIC MIRROR | 1999-11-28 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | ROTATING ANODE | RIGAKU RU200 | 1.54178 | ||
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 | 1.56 | 40 | 99.4 | 0.066 | 17.7407 | 3.5064 | 21012 | 21012 | 24.7 | ||||||||||
| 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) | |||||||||||
| 1.56 | 1.62 | 97.7 | 0.62 | 1.4916 | 3.3216 | 2038 | |||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (I) | Cut-off Sigma (F) | Number Reflections (All) | 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 | free R | 1QON | 1.56 | 40 | 2 | 4 | 20020 | 14668 | 992 | 94.7 | 0.1203 | 0.1274 | 0.14 | 0.1875 | 0.17 | RANDOM | 25.65 | |
| 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] | |
| Coordinate Error | ||
|---|---|---|
| Structure Solution Method | Refinement High Resolution | Refinement Low Resolution |
| 11 | 1546.5 | |
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| s_approx_iso_adps | 0.071 |
| s_non_zero_chiral_vol | 0.056 |
| s_similar_adp_cmpnt | 0.056 |
| s_zero_chiral_vol | 0.047 |
| s_anti_bump_dis_restr | 0.046 |
| s_angle_d | 0.03 |
| s_from_restr_planes | 0.027 |
| s_bond_d | 0.01 |
| s_rigid_bond_adp_cmpnt | 0.003 |
| s_similar_dist | |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 1295 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 240 |
| Heterogen Atoms | 60 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| DENZO | data reduction |
| SCALEPACK | data scaling |
| AMoRE | phasing |
| SHELXL-97 | refinement |














