Binding of Phosphate and Pyrophosphate ions at the active site of human angiogenin as revealed by X-ray Crystallography
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 1B1I | PDB ENTRY 1B1I |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | 6 | 25% PEG 6000, 0.1M MES, PH 6.0, 0.1M NACL | ||
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 1.97 | 37 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 86.206 | α = 90 |
| b = 38.405 | β = 90 |
| c = 33.568 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 21 21 2 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 287 | IMAGE PLATE | MARRESEARCH | MIRRORS | 1998-09-15 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | SRS BEAMLINE PX9.5 | SRS | PX9.5 | |
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 | 2 | 40 | 92.9 | 0.079 | 20 | 5.3 | 7458 | 19.6 | |||||||||||
| 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 | 2 | 2.06 | 97.1 | 0.152 | 11.2 | 2.5 | |||||||||||||
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-Free (Depositor) | R-Free Selection Details | Mean Isotropic B | ||||||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | PDB ENTRY 1B1I | 2 | 40 | 7447 | 566 | 93.1 | 0.185 | 0.185 | 0.23 | RANDOM | 24.7 | ||||||
| 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] | |
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| x_dihedral_angle_d | 27.8 |
| x_scangle_it | 7.02 |
| x_mcangle_it | 4.67 |
| x_scbond_it | 4.66 |
| x_mcbond_it | 3 |
| x_angle_deg | 1.4 |
| x_improper_angle_d | 0.77 |
| x_bond_d | 0.009 |
| x_bond_d_na | |
| x_bond_d_prot | |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 992 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 46 |
| Heterogen Atoms | 5 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| X-PLOR | refinement |
| DENZO | data reduction |
| SCALEPACK | data scaling |
| AMoRE | phasing |














