Crystal Structure of the B-phycoerythrin from the red algae Porphyridium Cruentum at pH5
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details | 
| experimental model | PDB | 1LIA | |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details | 
| 1 | counter-diffusion in capillary | 5 | 298 | 3M ammonium sulphate, 0.1M sodium acetate, pH 5, counter-diffusion in capillary, temperature 298K | 
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content | 
| 2.74 | 55.14 | 
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) | 
| a = 187 | α = 90 | 
| b = 187 | β = 90 | 
| c = 59.33 | γ = 120 | 
| Symmetry | |
|---|---|
| Space Group | H 3 | 
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 315r | 2011-01-29 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline | 
| 1 | SYNCHROTRON | ESRF BEAMLINE ID14-4 | 0.97 | ESRF | ID14-4 | 
Data Collection
| Overall | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (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 | 1.85 | 93.5 | 98 | 0.071 | 0.071 | 13.1 | 3.7 | 64691 | 64691 | 18.725 | |||||||||
| Highest Resolution Shell | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
| 1 | 1.85 | 1.95 | 96.7 | 0.483 | 0.483 | 1.6 | 3.4 | 9332 | |||||||||||
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 | 1LIA | 1.85 | 20 | 66037 | 64691 | 3283 | 97.96 | 0.1802 | 0.1802 | 0.178 | 0.18 | 0.221 | 0.22 | RANDOM | 19.7394 | ||
| 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] | |
| 0.15 | 0.07 | 0.15 | -0.22 | |||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation | 
| r_dihedral_angle_2_deg | 37.688 | 
| r_dihedral_angle_4_deg | 15.016 | 
| r_dihedral_angle_3_deg | 13.975 | 
| r_dihedral_angle_1_deg | 5.809 | 
| r_angle_refined_deg | 2.411 | 
| r_chiral_restr | 0.129 | 
| r_bond_refined_d | 0.017 | 
| r_gen_planes_refined | 0.013 | 
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number | 
| Protein Atoms | 5088 | 
| Nucleic Acid Atoms | |
| Solvent Atoms | 540 | 
| Heterogen Atoms | 435 | 
Software
| Software | |
|---|---|
| Software Name | Purpose | 
| MOSFLM | data reduction | 
| SCALA | data scaling | 
| MOLREP | phasing | 
| REFMAC | refinement | 
| PDB_EXTRACT | data extraction | 
| ADSC | data collection | 














