3F87
An alpha/beta-Peptide Helix Bundle with a Pure beta-Amino Acid Core and a Distinctive Quarternary Structure: GCN4pLI derivative with beta residues at a and d heptad positions - higher symmetry crystal
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7.5 | 298 | 0.12 M NaI, 0.08 M NaCl, 0.1 M HEPES-Na pH 7.5, 20% (v/v) 2-methyl-2,4-pentanediol (MPD), VAPOR DIFFUSION, HANGING DROP, temperature 298K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.68 | 66.54 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 71.313 | α = 90 |
b = 71.313 | β = 90 |
c = 97.44 | γ = 90 |
Symmetry | |
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Space Group | P 43 21 2 |
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 | BRUKER SMART 6000 | confocal mirrors | 2007-06-21 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | BRUKER AXS MICROSTAR | 1.5418 |
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 | 2.4 | 50.4 | 98.7 | 0.148 | 0.061 | 12.61 | 10451 | 10316 |
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 | 2.4 | 2.49 | 99.5 | 0.521 | 0.228 | 4.41 | 9.76 | 1096 |
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 | R-Free | R-Free Selection Details | Mean Isotropic B | |||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 2.4 | 50.4 | 9808 | 9808 | 490 | 99 | 0.233 | 0.233 | 0.23 | 0.296 | RANDOM | 17.868 |
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] | |
-0.14 | -0.14 | 0.29 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 38.491 |
r_dihedral_angle_3_deg | 18.282 |
r_dihedral_angle_4_deg | 17.508 |
r_dihedral_angle_1_deg | 6.543 |
r_scangle_it | 3.785 |
r_scbond_it | 2.181 |
r_angle_refined_deg | 2.011 |
r_mcbond_other | 1.478 |
r_angle_other_deg | 1.393 |
r_mcangle_it | 1.36 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1176 |
Nucleic Acid Atoms | |
Solvent Atoms | 79 |
Heterogen Atoms | 9 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
PROTEUM PLUS | data collection |
PROTEUM PLUS | data reduction |
PROTEUM PLUS | data scaling |
PHASER | phasing |