5U66
Modified single helix from the B-domain of protein A bound to IgG1 Fc
X-RAY DIFFRACTION
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details |
| 1 | VAPOR DIFFUSION, SITTING DROP | 7.2 | 293 | 20% PEG 4000, 0.1M HEPES pH 7.2, 5mg/mL protein concentration. |
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content |
| 2.8 | 56.01 |
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 49.165 | α = 90 |
| b = 126.812 | β = 90 |
| c = 91.927 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | C 2 2 21 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | x-ray | 80 | CCD | MARMOSAIC 300 mm CCD | 1997-05-15 | M | SINGLE WAVELENGTH | ||||||
| 2 | 1 | x-ray | 80 | CCD | MARMOSAIC 300 mm CCD | 1997-04-19 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
| 1 | SYNCHROTRON | SSRL BEAMLINE BL7-1 | 0.98 | SSRL | BL7-1 |
| 2 | ROTATING ANODE | RIGAKU RU300 | 1.0 | ||
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Sym 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 | 1.7 | 41 | 96.4 | 0.074 | 29.8 | 5.7 | 29486 | 2 | 18.2 | ||||||||||
| 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) | |||||||||||
| 1,2 | 1.7 | 1.73 | 93.2 | 0.229 | 4.7 | 3.1 | |||||||||||||
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 | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 5U52 | 1.7 | 41.02 | 26544 | 2942 | 92.3 | 0.164 | 0.157 | 0.227 | RANDOM | 35.31 | ||||||
| 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] | |
| -0.83 | 0.36 | 0.47 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 35.35 |
| r_sphericity_free | 31.501 |
| r_sphericity_bonded | 25.131 |
| r_dihedral_angle_4_deg | 19.009 |
| r_dihedral_angle_3_deg | 13.807 |
| r_long_range_B_refined | 8.697 |
| r_long_range_B_other | 8.695 |
| r_scangle_other | 8.31 |
| r_mcangle_it | 7.425 |
| r_mcangle_other | 7.424 |
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number |
| Protein Atoms | 1802 |
| Nucleic Acid Atoms | |
| Solvent Atoms | 224 |
| Heterogen Atoms | 86 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| DENZO | data reduction |
| SCALEPACK | data scaling |
| AMoRE | phasing |
