4X1Y
Discovery of cytotoxic Dolastatin 10 analogs with N-terminal modifications
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 6.8 | 291 | 5% PEG 400, 0.1M LiSO4, 5-7% PEG 20K, 50 mM K-PIPES |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.62 | 53.05 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 66.61 | α = 90 |
| b = 127.86 | β = 90 |
| c = 255.04 | 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 | 100 | PIXEL | DECTRIS PILATUS 6M | 2012-02-09 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | APS BEAMLINE 17-ID | 1.0 | APS | 17-ID |
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 | 3.19 | 50 | 97.5 | 0.104 | 4.7 | 4.5 | 36225 | 94.19 | |||||||||||
| 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 | 3.19 | 3.26 | 90.4 | 0.832 | 3.7 | 1642 | |||||||||||||
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 | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 3HKB | 3.19 | 30.59 | 36145 | 1817 | 97.25 | 0.1926 | 0.1883 | 0.2731 | RANDOM | 126.67 | ||||||
| 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] | |
| -58.7925 | 31.0092 | 27.7833 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| t_other_torsion | 24.44 |
| t_omega_torsion | 2.57 |
| t_angle_deg | 1.22 |
| t_bond_d | 0.01 |
| t_dihedral_angle_d | |
| t_incorr_chiral_ct | |
| t_pseud_angle | |
| t_trig_c_planes | |
| t_gen_planes | |
| t_it | |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 14445 |
| Nucleic Acid Atoms | |
| Solvent Atoms | |
| Heterogen Atoms | 282 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| BUSTER | refinement |
| DENZO | data reduction |
| PDB_EXTRACT | data extraction |
| SCALEPACK | data scaling |
| BUSTER | phasing |
