membrane-bound glutamate carboxypeptidase II (GCPII) in complex with quisqualic acid (quisqualate, alpha-amino-3,5-dioxo-1,2,4- oxadiazolidine-2-propanoic acid)
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 2C6C | PDB ENTRY 2C6C |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | 7 | 20 MM HEPES PH 7.25, 200 MM NACL, 5% (W/V) PEG 400 AND 15% (W/V) PEG 1500. | ||
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 3.48 | 64.42 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 103.144 | α = 90 |
| b = 130.758 | β = 90 |
| c = 159.992 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | I 2 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 | 260 | CCD | MARRESEARCH | 2004-01-27 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | EMBL/DESY, HAMBURG BEAMLINE X11 | EMBL/DESY, HAMBURG | X11 | |
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 | 2.99 | 50 | 93.5 | 0.15 | 5 | 20662 | |||||||||||||
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 (Depositor) | R-Work (DCC) | R-Free (Depositor) | Mean Isotropic B | ||||||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | PDB ENTRY 2C6C | 2.99 | 100 | 20723 | 93.2 | 0.21 | 0.21 | 0.2 | 34.08 | ||||||||
| 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] | |
| 1.95 | -2.6 | 0.65 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 38.533 |
| r_dihedral_angle_3_deg | 20.07 |
| r_dihedral_angle_4_deg | 19.129 |
| r_dihedral_angle_1_deg | 8.323 |
| r_angle_refined_deg | 2.312 |
| r_symmetry_vdw_refined | 0.395 |
| r_symmetry_hbond_refined | 0.393 |
| r_nbtor_refined | 0.355 |
| r_nbd_refined | 0.295 |
| r_xyhbond_nbd_refined | 0.225 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 5318 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 21 |
| Heterogen Atoms | 193 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| H | data reduction |
| SCALEPACK | data scaling |
| REFMAC | phasing |
