Complex of a camelid single-domain vhh antibody fragment with RNASE A at 2.5A resolution: SE5B-TRI crystal form with five se-met sites (L4M, M34, M51, F68M, M83) in vhh scaffold.
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 2P45 | PDB ID 2P45 |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION | 7.5 | 295 | HAMPTON RESEARCH INDEX SCREEN, SOLUTION #68: (NH4)SO4, PEG 3350, HEPES BUFFER, PH 7.5, VAPOR DIFFUSION, temperature 295K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.71 | 54.64 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 72.011 | α = 90 |
| b = 72.011 | β = 90 |
| c = 98.012 | γ = 120 |
| Symmetry | |
|---|---|
| Space Group | P 31 2 1 |
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 | ADSC QUANTUM 210 | MIRRORS | 2004-04-01 | M | SINGLE WAVELENGTH | |||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | APS BEAMLINE 17-ID | 0.97934 | APS | 17-ID |
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (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 | 2.5 | 20 | 96.1 | 4.9 | 10142 | 10142 | |||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | 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 | MOLECULAR REPLACEMENT | THROUGHOUT | PDB ID 2P45 | 2.5 | 20 | 10142 | 9649 | 493 | 96.01 | 0.23295 | 0.23295 | 0.22998 | 0.23 | 0.29438 | 0.3 | RANDOM | 84.208 | ||
| 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] | |
| 4.76 | 2.38 | 4.76 | -7.14 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 35.271 |
| r_dihedral_angle_3_deg | 16.271 |
| r_dihedral_angle_4_deg | 10.048 |
| r_dihedral_angle_1_deg | 7.452 |
| r_angle_refined_deg | 1.216 |
| r_angle_other_deg | 0.745 |
| r_symmetry_vdw_refined | 0.216 |
| r_nbd_refined | 0.215 |
| r_symmetry_vdw_other | 0.208 |
| r_nbd_other | 0.188 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 1844 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 19 |
| Heterogen Atoms | |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| HKL-3000 | data collection |
| HKL-3000 | data reduction |
| HKL-3000 | data scaling |
| MOLREP | phasing |
