Crystal structure of Hyp-1 protein from Hypericum perforatum (St John's wort) involved in hypericin biosynthesis
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 1XDF | PDB ENTRIES 1XDF+2QIM+2FLH+1TW0+2BK0 |
| experimental model | PDB | 2QIM | PDB ENTRIES 1XDF+2QIM+2FLH+1TW0+2BK0 |
| experimental model | PDB | 2FLH | PDB ENTRIES 1XDF+2QIM+2FLH+1TW0+2BK0 |
| experimental model | PDB | 1TW0 | PDB ENTRIES 1XDF+2QIM+2FLH+1TW0+2BK0 |
| experimental model | PDB | 2BK0 | PDB ENTRIES 1XDF+2QIM+2FLH+1TW0+2BK0 |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, HANGING DROP | 8.5 | 292 | 0.4M NaCl, 0.1M Tris/HCl, 30% (w/v) PEG 4000, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 292K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.33 | 47.25 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 37.538 | α = 90 |
| b = 76.713 | β = 90 |
| c = 119.799 | 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 | CCD | MARMOSAIC 225 mm CCD | mirrors | 2008-02-09 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | BESSY BEAMLINE 14.1 | 0.91841 | BESSY | 14.1 |
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 | 1.688 | 30 | 100 | 0.078 | 21.4 | 7 | 39813 | 39813 | -3 | 20.58 | |||||||||
| 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) | |||||||||||
| 1.688 | 1.75 | 99.9 | 0.66 | 2.2 | 5.4 | 3912 | |||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | 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 | MOLECULAR REPLACEMENT | R-free | PDB ENTRIES 1XDF+2QIM+2FLH+1TW0+2BK0 | 1.688 | 27.663 | 1.34 | 39742 | 39742 | 1590 | 99.89 | 0.172 | 0.172 | 0.17 | 0.18 | 0.206 | 0.22 | random | 27.532 | |
| 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] | |
| 4.8754 | 4.6346 | -9.51 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| f_dihedral_angle_d | 18.846 |
| f_angle_d | 1.525 |
| f_chiral_restr | 0.11 |
| f_bond_d | 0.015 |
| f_plane_restr | 0.007 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 2737 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 258 |
| Heterogen Atoms | 140 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| MAR345 | data collection |
| PHASER | phasing |
| PHENIX | refinement |
| DENZO | data reduction |
| SCALEPACK | data scaling |














