3HEU
Cyclic residues in alpha/beta-peptide helix bundles: GCN4-pLI side chain sequence on an (alpha-alpha-beta) backbone with a cyclic beta-residue at position 13
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 7.5 | 298 | 0.2 M magnesium chloride, 0.1 M HEPES pH 7.5, 30% v/v PEG 400, VAPOR DIFFUSION, HANGING DROP, temperature 298K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
1.89 | 34.89 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 36.764 | α = 90 |
b = 36.764 | β = 90 |
c = 47.054 | γ = 90 |
Symmetry | |
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Space Group | P 4 21 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 | CCD | BRUKER SMART 6000 | confocal mirrors | 2008-08-28 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | ROTATING ANODE | BRUKER AXS MICROSTAR | 1.5418 |
Data Collection
Overall | |||||||||||||||||||
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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 | 23.53 | 99.8 | 0.072 | 21.5 | 10.4 | 2446 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R-Sym I (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||||
1 | 2 | 2.1 | 98.7 | 0.342 | 3.4 | 4 |
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 3C3G | 2 | 23.53 | 2321 | 111 | 99.75 | 0.20336 | 0.20132 | 0.24542 | RANDOM | 12.904 |
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] | |
0.81 | 0.81 | -1.63 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 29.913 |
r_dihedral_angle_3_deg | 13.581 |
r_dihedral_angle_1_deg | 5.804 |
r_scangle_it | 3.362 |
r_scbond_it | 2.118 |
r_angle_refined_deg | 1.985 |
r_mcbond_it | 1.392 |
r_mcangle_it | 1.355 |
r_angle_other_deg | 1.234 |
r_symmetry_vdw_refined | 0.288 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 277 |
Nucleic Acid Atoms | |
Solvent Atoms | 36 |
Heterogen Atoms | 25 |
Software
Software | |
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Software Name | Purpose |
PROTEUM PLUS | data collection |
PHASER | phasing |
REFMAC | refinement |
PROTEUM PLUS | data reduction |
PROTEUM PLUS | data scaling |