2UXG
Pseudoazurin with engineered amicyanin ligand loop, reduced form, pH 5.5
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1BQK | PDB ENTRY 1BQK |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 5.5 | HANGING DROP VAPOR DIFFUSION METHOD, 1 MICRO-LITER OF PROTEIN (20 MG/ML IN 100 MM MES, PH 5.5 PLUS 30 MM NACL) WAS MIXED WITH 1 MICO-L OF RESERVOIR SOLUTION (100 MM MES, PH 5.5 PLUS 2 M AMMONIUM SULFATE AND 2 M NACL). THE CRYSTALS WERE REDUCED BY ADDING 50 MM MERCAPTOETHANOL TO THE RESERVOIR SOLUTION AND BECAME COLORLESS AFTER 3 HOURS. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.09 | 40.8 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 105.355 | α = 90 |
b = 105.355 | β = 90 |
c = 56.487 | γ = 120 |
Symmetry | |
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Space Group | H 3 2 |
Diffraction
Diffraction Experiment | ||||||||||||||
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | IMAGE PLATE | MARRESEARCH | CONFOCAL MAXFLUX FROM OSMIC | 2007-01-09 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | RIGAKU RU200 |
Data Collection
Overall | |||||||||||||||||||
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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 | 1.98 | 50 | 95.6 | 0.06 | 18.5 | 7.1 | 8140 | 2 |
Highest Resolution Shell | |||||||||||||||||||
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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 | 1.98 | 2.05 | 64.3 | 0.22 | 2.8 | 3.8 |
Refinement
Statistics | |||||||||||||||||||
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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 | PDB ENTRY 1BQK | 1.99 | 30 | 7756 | 384 | 97 | 0.163 | 0.16 | 0.23 | RANDOM | 40.41 |
Temperature Factor Modeling | ||||||
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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 | -0.97 | -1.95 | 2.92 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 36.22 |
r_dihedral_angle_3_deg | 15.465 |
r_dihedral_angle_1_deg | 6.263 |
r_dihedral_angle_4_deg | 5.537 |
r_scangle_it | 4.236 |
r_scbond_it | 2.703 |
r_angle_refined_deg | 1.556 |
r_mcangle_it | 1.531 |
r_mcbond_it | 1.005 |
r_symmetry_hbond_refined | 0.417 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 903 |
Nucleic Acid Atoms | |
Solvent Atoms | 110 |
Heterogen Atoms | 8 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
HKL-2000 | data reduction |
SCALEPACK | data scaling |
MOLREP | phasing |