Structure of the 4-CHRD domain of human Chordin in complex with a Heparin Oligosaccharide
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, SITTING DROP | 6.5 | 277.15 | 0.1M Imidazole/MES buffer pH 6.5, 0.06M Magnesium chloride hexahydrate/Calcium chloride dihydrate, 30% Glycerol/PEG 4000. (Morpheus condition A3). 50ug/mL Heparin Dp4. |
| 2 | VAPOR DIFFUSION, SITTING DROP | 6.5 | 277.15 | 0.1M Imidazole/MES buffer pH 6.5, 0.06M Magnesium chloride hexahydrate/Calcium chloride dihydrate, 30% Glycerol/PEG 4000. (Morpheus condition A3). 50ug/mL Heparin Dp4. |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 172.774 | α = 90 |
| b = 172.774 | β = 90 |
| c = 129.411 | γ = 120 |
| Symmetry | |
|---|---|
| Space Group | P 62 2 2 |
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 EIGER2 XE 16M | 2024-09-22 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | DIAMOND BEAMLINE I04 | 0.9537 | Diamond | I04 |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | CC (Half) | 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 | 2.92 | 97.88 | 100 | 0.233 | 1 | 17.7 | 78.9 | 25297 | 112.67 | ||||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
| 1 | 2.92 | 3.1 | 100 | 0.803 | 0.53 | 1 | 81.3 | ||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | 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 | MOLECULAR REPLACEMENT | FREE R-VALUE | 2.92 | 74.81 | 1.34 | 25240 | 1300 | 99.9 | 0.2411 | 0.2394 | 0.2406 | 0.2742 | 0.2738 | ||||||
| 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] | |
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| f_dihedral_angle_d | 13.747 |
| f_angle_d | 0.789 |
| f_chiral_restr | 0.053 |
| f_plane_restr | 0.009 |
| f_bond_d | 0.003 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 3652 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 27 |
| Heterogen Atoms | 116 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| PHENIX | refinement |
| DIALS | data reduction |
| Aimless | data scaling |
| PHASER | phasing |
| Coot | model building |














