Crystal structure of a putative aldose 1-epimerase (KPN_04629) from Klebsiella pneumoniae subsp. pneumoniae MGH 78578 at 1.90 A resolution
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, SITTING DROP | 7 | 293 | 40.00% 2-methyl-2,4-pentanediol, 0.20M ammonium sulfate, 0.1M TRIS pH 7.0, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 293K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.86 | 56.93 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 124.033 | α = 90 |
| b = 119.953 | β = 106.72 |
| c = 103.015 | 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 | CCD | MARMOSAIC 325 mm CCD | double crystal monochromator | 2011-06-23 | M | MAD | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | SSRL BEAMLINE BL9-2 | 0.91162,0.97932,0.97915 | SSRL | BL9-2 |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Sym 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 | 29.698 | 99.9 | 0.074 | 9.8 | 3.8 | 113332 | 113332 | 27.331 | ||||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
| 1 | 1.9 | 1.95 | 100 | 0.561 | 0.561 | 2.3 | 3.8 | 8363 | |||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | 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 | MAD | THROUGHOUT | 1.9 | 29.698 | 113323 | 5671 | 99.96 | 0.1598 | 0.1581 | 0.1665 | 0.1931 | 0.1988 | RANDOM | 47.1879 | |||||
| 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] | |
| 0.35 | -0.23 | -1.32 | 0.84 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 36.836 |
| r_dihedral_angle_4_deg | 13.788 |
| r_dihedral_angle_3_deg | 12.059 |
| r_scangle_it | 6.86 |
| r_dihedral_angle_1_deg | 5.687 |
| r_scbond_it | 4.855 |
| r_mcangle_it | 2.8 |
| r_mcbond_it | 1.772 |
| r_angle_refined_deg | 1.667 |
| r_angle_other_deg | 1.232 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 8927 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 778 |
| Heterogen Atoms | 132 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| MolProbity | model building |
| PDB_EXTRACT | data extraction |
| SHELX | phasing |
| SHARP | phasing |
| SCALA | data scaling |
| REFMAC | refinement |
| MOSFLM | data reduction |
| SHELXD | phasing |
| autoSHARP | phasing |














