2P6A
The structure of the Activin:Follistatin 315 complex
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2B0U | one activin A monomer and ND, FSD1, and FSD2 of one follistatin 288 molecule (PDB 2B0U) |
Crystallization
Crystalization Experiments | ||||
---|---|---|---|---|
ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 6.5 | 298 | 20-23% PEG 1000, 200mM MgCl2, 3% EtOH, 20mM Trimethyl-amine HCl, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 298 K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.53 | 51.47 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 104.641 | α = 90 |
b = 106.584 | β = 90 |
c = 87.568 | γ = 90 |
Symmetry | |
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Space Group | P 2 2 21 |
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 | 298 | CCD | MARMOSAIC 300 mm CCD | 2006-06-26 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
---|---|---|---|---|---|
ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 5ID-B | 1.0 | APS | 5ID-B |
Data Collection
Overall | |||||||||||||||||||
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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 | 3.4 | 34.344 | 99.7 | 0.16 | 0.16 | 4 | 7.2 | 13978 |
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 | 3.4 | 3.58 | 100 | 0.708 | 0.708 | 1 | 7.3 | 1994 |
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 | one activin A monomer and ND, FSD1, and FSD2 of one follistatin 288 molecule (PDB 2B0U) | 3.4 | 31.01 | 13955 | 283 | 99.69 | 0.225 | 0.223 | 0.324 | RANDOM | 46.862 |
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] | |
-0.01 | -0.01 | 0.03 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.349 |
r_scangle_it | 25.907 |
r_scbond_it | 22.456 |
r_dihedral_angle_3_deg | 21.821 |
r_mcangle_it | 21.07 |
r_dihedral_angle_4_deg | 18.124 |
r_mcbond_it | 16.71 |
r_dihedral_angle_1_deg | 8.805 |
r_angle_refined_deg | 1.945 |
r_symmetry_vdw_refined | 0.524 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 5952 |
Nucleic Acid Atoms | |
Solvent Atoms | |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
SCALA | data scaling |
PHASER | phasing |
DM | phasing |
REFMAC | refinement |
PDB_EXTRACT | data extraction |
MOSFLM | data reduction |
CCP4 | data scaling |