1.5A Resolution Crystal Structure of a Metallo Beta Lactamase Family Protein, the ELAC Homolgue of Bacillus anthracis, a Putative Ribonuclease
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION | 5.6 | 298 | 0.2M Ammonoum Sulfate, 0.1M Sodium citrate tribasic dihydrate ph 5.6, 30% w/v PEG 4000 0.5M NaCl, ZnCl, VAPOR DIFFUSION, temperature 298K |
2 | VAPOR DIFFUSION | 5.6 | 298 | 0.2M Ammonoum Sulfate, 0.1M Sodium citrate tribasic dihydrate ph 5.6, 30% w/v PEG 40000.5M NaCl, ZnCl , VAPOR DIFFUSION, temperature 298K |
Crystal Data
Unit Cell | |
---|---|
Length ( Å ) | Angle ( ˚ ) |
a = 73.375 | α = 90 |
b = 91.19 | β = 115.31 |
c = 78.466 | γ = 90 |
Symmetry | |
---|---|
Space Group | P 1 21 1 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 99.8 | CCD | MAR CCD 165 mm | mirrors | 2005-03-18 | M | SINGLE WAVELENGTH | |||||
2 | 1 | x-ray | 100 | CCD | MARMOSAIC 225 mm CCD | mirrors | 2005-03-26 | M | SINGLE WAVELENGTH | |||||
1,2 | 1 |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 32-ID | 0.9792 | APS | 32-ID |
2 | SYNCHROTRON | APS BEAMLINE 5ID-B | 1.0 | APS | 5ID-B |
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 | 1.5 | 25 | 88 | 0.065 | 13.05 | 148486 | -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) | |||||||||||
1,2 | 1.5 | 1.57 | 77.7 | 0.207 | 5 | 8.86 | 29285 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | 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 | SAD | THROUGHOUT | 1.502 | 25 | 135032 | 135032 | 7103 | 95.75 | 0.14902 | 0.14902 | 0.14736 | 0.152 | 0.18009 | 0.1834 | RANDOM | 19.163 |
Temperature Factor Modeling | ||||||
---|---|---|---|---|---|---|
Anisotropic B[1][1] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[3][3] | |||
0.43 | 0.21 | -0.49 | 0.23 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.739 |
r_dihedral_angle_4_deg | 21.182 |
r_dihedral_angle_3_deg | 11.82 |
r_dihedral_angle_1_deg | 6.256 |
r_scangle_it | 4.697 |
r_scbond_it | 3.089 |
r_mcangle_it | 1.992 |
r_angle_refined_deg | 1.251 |
r_mcbond_it | 1.229 |
r_nbtor_refined | 0.307 |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | 7741 |
Nucleic Acid Atoms | |
Solvent Atoms | 1375 |
Heterogen Atoms | 13 |
Software
Software | |
---|---|
Software Name | Purpose |
REFMAC | refinement |
MAR345 | data collection |
SCALEPACK | data scaling |
XDS | data scaling |
PHENIX | phasing |
SHARP | phasing |
DM | phasing |