Crystal Structure of Bacillus DNA Polymerase I Large Fragment Bound to DNA and ddATP-dT in Closed Conformation
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details | 
| experimental model | PDB | 2HVI | PDB ENTRY 2HVI | 
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details | 
| 1 | VAPOR DIFFUSION, HANGING DROP | 5.8 | 290 | 45-50% saturated ammonium sulfate, 2.5% MPD, 10 mM magnesium sulfate, 100 mM MES, pH 5.8, VAPOR DIFFUSION, HANGING DROP, temperature 290K | 
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content | 
| 2.6 | 52.68 | 
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) | 
| a = 93.81 | α = 90 | 
| b = 109.27 | β = 90 | 
| c = 150.43 | γ = 90 | 
| Symmetry | |
|---|---|
| Space Group | P 21 21 21 | 
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | CCD | MARMOSAIC 225 mm CCD | 2009-10-23 | M | SINGLE WAVELENGTH | |||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline | 
| 1 | SYNCHROTRON | APS BEAMLINE 22-BM | 0.97121 | APS | 22-BM | 
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 | 1.61 | 100 | 97.2 | 0.066 | 14.23 | 193977 | -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 | 1.61 | 1.71 | 91.4 | 0.493 | 3.58 | ||||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | 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) | Mean Isotropic B | |||||
| X-RAY DIFFRACTION | FOURIER SYNTHESIS | PDB ENTRY 2HVI | 1.611 | 88.408 | 2.35 | 185284 | 8426 | 93.02 | 0.1947 | 0.1933 | 0.19 | 0.2244 | 0.22 | ||||||
| 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] | |
| 0.3738 | -1.2769 | 0.9031 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation | 
| f_dihedral_angle_d | 15.511 | 
| f_angle_d | 1.266 | 
| f_chiral_restr | 0.073 | 
| f_bond_d | 0.01 | 
| f_plane_restr | 0.006 | 
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number | 
| Protein Atoms | 9293 | 
| Nucleic Acid Atoms | 846 | 
| Solvent Atoms | 1696 | 
| Heterogen Atoms | 75 | 
Software
| Software | |
|---|---|
| Software Name | Purpose | 
| XSCALE | data scaling | 
| PHENIX | refinement | 
| PDB_EXTRACT | data extraction | 
| XDS | data reduction | 
| REFMAC | phasing | 














