1MFT

Crystal Structure Of Four-Helix Bundle Model


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP6.5291PEG 300, zinc chloride, bis-tris, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Crystal Properties
Matthews coefficientSolvent content
1.9235.79

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 25.233α = 90
b = 54.81β = 105.08
c = 37.168γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 427-pole hybrid wiggler2001-10-31MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONNSLS BEAMLINE X251.605NSLSX25

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)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
12.55093.80.10.16.52344432291125.7
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)RedundancyNumber Unique Reflections (All)
2.52.5797.80.2170.21732268

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (All)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (All)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUTPDB ENTRY 1EC52.518.213229319922493.40.2270.2220.2220.266RANDOM32.1
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]
10.24-5.93-3.39-6.85
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d17.6
c_scangle_it8.05
c_scbond_it6.18
c_mcangle_it3.51
c_mcbond_it2.31
c_angle_deg1.1
c_improper_angle_d0.72
c_bond_d0.008
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms882
Nucleic Acid Atoms
Solvent Atoms13
Heterogen Atoms2

Software

Software
Software NamePurpose
MADNESSdata collection
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing
CNSrefinement
MADNESSdata reduction