4NY6

Neutron structure of leucine and valine methyl protonated type III antifreeze


NEUTRON DIFFRACTION - X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, SITTING DROP5.228510mg/ml protein in 50 mM sodium acetate pD 5.2. Drops containing 20 ml protein solution and 30 ml precipitant buffer (2.1 M ammonium sulfate, 9% d8-glycerol) were equilibrated against 1 ml precipitant buffer in the reservoir, VAPOR DIFFUSION, SITTING DROP, temperature 285K
Crystal Properties
Matthews coefficientSolvent content
2.1643.08

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 32.73α = 90
b = 39.12β = 90
c = 46.54γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS 6MMSINGLE WAVELENGTH
21neutron298LADI-IIIImage Plate2008-05-28LLAUE
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONESRF BEAMLINE ID23-10.6525ESRFID23-1
2NUCLEAR REACTOROTHER3.18-4.22

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)R Sym I (Observed)Rrim I (All)Rpim I (All)CC (Half)R Split (All)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
11.055099.70.04832.56.128534
21.846.5289.30.1361411.159165194
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)R Merge I (Observed)R-Sym I (Observed)Rrim I (All)Rpim I (All)CC (Half)R Split (All)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.051.090.6382.66
21.81.90.1696.63.5

Refinement

Statistics
Diffraction IDStructure Solution MethodResolution (High)Resolution (Low)Cut-off Sigma (I)Cut-off Sigma (F)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 DIFFRACTION1.0518.9651.3428511142699.820.17120.17030.188116.9609
NEUTRON DIFFRACTION1.8526.772489724689.940.17820.17570.2245
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
KeyRefinement Restraint Deviation
f_dihedral_angle_d15.259
f_angle_d1.302
f_chiral_restr0.08
f_bond_d0.013
f_plane_restr0.006
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms479
Nucleic Acid Atoms
Solvent Atoms42
Heterogen Atoms

Software

Software
Software NamePurpose
QLDdata collection
PHENIXmodel building
PHENIXrefinement
LAUEGENdata reduction
LSCALEdata scaling
SCALAdata scaling
PHENIXphasing