1CIP
GI-ALPHA-1 SUBUNIT OF GUANINE NUCLEOTIDE-BINDING PROTEIN COMPLEXED WITH A GTP ANALOGUE
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 1GIA |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | 7 | PROTEIN BOUND TO GPPNHP WAS CRYSTALLIZED IN 1.8-2.0M (NH4)2SO3, 100MM SODIUM ACETATE, H 6.0, 1MM MGSO4, 1MM GPPNHP, AND 5MM DTT. PRIOR TO DATA COLLECTION CRYSTALS WERE TRANSFERED TO 2.0M LI2SO4, 1MM GPPNHP, 3MM DTT, 1MM MGSO4, 100MM BES, PH 7.0, AND 15% GLYCEROL. CRYSTALS WERE FLASH FROZEN IN LIQUID PROPANE. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.42 | 49.26 |
Crystal Data
Unit Cell | |
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Length ( ? ) | Angle ( ? ) |
a = 80.05 | ¦Á = 90 |
b = 80.05 | ¦Â = 90 |
c = 105.55 | ¦Ã = 120 |
Symmetry | |
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Space Group | P 32 2 1 |
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 | ADSC QUANTUM 4 | 1998-06-16 | M | SINGLE WAVELENGTH | ||||||
2 | 1 | x-ray | CCD | ADSC QUANTUM 4 | 1998-06-16 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | CHESS BEAMLINE A1 | CHESS | A1 | |
2 | SYNCHROTRON | CHESS BEAMLINE F1 | CHESS | F1 |
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 | ||||||||
1,2 | 1.5 | 15 | 90.2 | 0.051 | 21.6 | 3.92 | 57771 | 57771 | 15.94 |
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) | |||||||||||
1.5 | 1.55 | 77.4 | 0.14 | 7.5 | 2.5 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 1GIA | 1.5 | 15 | 1 | 57291 | 2895 | 90.84 | 0.213 | 0.235 | RANDOM | 18.02 |
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] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
x_dihedral_angle_d | 22.83 |
x_scangle_it | 4.17 |
x_scbond_it | 2.619 |
x_mcangle_it | 2.166 |
x_angle_deg | 1.37 |
x_mcbond_it | 1.368 |
x_improper_angle_d | 1.36 |
x_bond_d | 0.011 |
x_bond_d_na | |
x_bond_d_prot |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2543 |
Nucleic Acid Atoms | |
Solvent Atoms | 157 |
Heterogen Atoms | 33 |
Software
Software | |
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Software Name | Purpose |
X-PLOR | model building |
X-PLOR | refinement |
DENZO | data reduction |
SCALEPACK | data scaling |
X-PLOR | phasing |