464D
DISORDER AND TWIN REFINEMENT OF RNA HEPTAMER DOUBLE HELIX
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6 | 293 | 0.5 MM RNA DUPLEX, 12 MM SPERMINE, 40 MM NA-CACODYLATE PH 6.0, 80 MM SRCL2,40 MM LICL, 10 % (V/V) MPD AGAINST 0.5 ML 35 % (V/V) MPD, VAPOR DIFFUSION, HANGING DROP, temperature 293K |
Crystal Properties | |
---|---|
Matthews coefficient | Solvent content |
2.54 | 50.5 |
Crystal Data
Unit Cell | |
---|---|
Length ( Å ) | Angle ( ˚ ) |
a = 26.375 | α = 110.37 |
b = 28.995 | β = 96.62 |
c = 28.995 | γ = 96.62 |
Symmetry | |
---|---|
Space Group | P 1 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | IMAGE PLATE | MARRESEARCH | 1996-09-23 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | ESRF BEAMLINE BM14 | ESRF | BM14 |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 1.23 | 15 | 82.8 | 0.05 | 3.4 | 64180 | 64180 |
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) | |||||||||||
1.23 | 1.24 | 32.1 | 0.308 |
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 | THROUGHOUT | 1.23 | 15 | 18337 | 18337 | 955 | 96.7 | 0.129 | 0.129 | 0.127 | 0.1933 | THIN RESOLUTION SHELLS |
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] | |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
s_approx_iso_adps | 0.092 |
s_similar_adp_cmpnt | 0.041 |
s_from_restr_planes | 0.032 |
s_bond_d | 0.029 |
s_similar_dist | 0.019 |
s_angle_d | 0.018 |
s_non_zero_chiral_vol | 0.012 |
s_rigid_bond_adp_cmpnt | 0.012 |
s_anti_bump_dis_restr | 0.006 |
s_zero_chiral_vol |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | |
Nucleic Acid Atoms | 586 |
Solvent Atoms | 155 |
Heterogen Atoms | 4 |
Software
Software | |
---|---|
Software Name | Purpose |
SHELXL-97 | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |