Complex of a camelid single-domain vhh antibody fragment with RNASE A at 2.5A resolution: se5b-ortho-2 crystal form with five se-met sites (L4M, M34, M51, F68M, M83) in vhh scaffold.
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION | 8 | 295 | HAMPTON RESEARCH INDEX SCREEN, SOLUTION #93: ZN(CH2H3O2)2, PEG 3350, pH 8.0, VAPOR DIFFUSION, temperature 295K |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 1.97 | 37.5 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 49.27 | α = 90 |
| b = 70.057 | β = 90 |
| c = 123.408 | 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 | 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 | 0.97911 | 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 | 99.8 | 3.8 | 15319 | 15319 | |||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | 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 | SAD | THROUGHOUT | 2.5 | 20 | 15319 | 14539 | 780 | 99.81 | 0.22476 | 0.22476 | 0.22062 | 0.2315 | 0.29899 | 0.2991 | RANDOM | 29.791 | |||
| 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] | |
| -2.34 | 4.22 | -1.87 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 34.774 |
| r_dihedral_angle_3_deg | 16.698 |
| r_dihedral_angle_4_deg | 15.707 |
| r_dihedral_angle_1_deg | 9.372 |
| r_scangle_it | 2.65 |
| r_scbond_it | 1.854 |
| r_mcangle_it | 1.082 |
| r_angle_refined_deg | 1.04 |
| r_mcbond_it | 1.005 |
| r_angle_other_deg | 0.74 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 3642 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 83 |
| Heterogen Atoms | 11 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| HKL-2000 | data collection |
| HKL-2000 | data reduction |
| HKL-2000 | data scaling |
| SOLVE | phasing |
