1CHW

CHALCONE SYNTHASE FROM ALFALFA COMPLEXED WITH HEXANOYL-COA


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1BI5PDB ENTRY 1BI5

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
16.5THE CRYSTALS WERE OBTAINED OVERNIGHT AT 4 C HANGING-DROP VAPOR DIFFUSION METHOD. THE DROPLET CONSISTED ON 25 MGR/ML (FINAL CONCENTRATION) PROTEIN MIXED WITH THE RESERVOIR WHICH CONTAINED 2.4 M AMMONIUM SULFATE, 100 MM PIPES BUFFER (PH 6.5), IN THE PRESENCE (UP TO 5 MM) OR ABSENCE OF DTT REDUCING AGENT. CRYSTALS WERE STABILIZED IN 40% (V/V) PEG400, 100 MM PIPES AND 20 MM HEXANOYL-COA PRIOR TO FREEZING AT 105 K.
Crystal Properties
Matthews coefficientSolvent content
2.0742

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 97.814α = 90
b = 97.814β = 90
c = 130.463γ = 120
Symmetry
Space GroupP 31 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray105IMAGE PLATEMAC Science DIP-20001998-09-09MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODEMACSCIENCE

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (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
11.970.7184.620.0477.61.8148429
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.91.9423.80.180.950.284

Refinement

Statistics
Diffraction IDStructure Solution MethodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONOTHERPDB ENTRY 1BI51.970.7148429242184.620.21290.29RANDOM
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
p_angle_d4.086
p_bond_d0.018
p_angle_deg
p_planar_d
p_hb_or_metal_coord
p_mcbond_it
p_mcangle_it
p_scbond_it
p_scangle_it
p_plane_restr
RMS Deviations
KeyRefinement Restraint Deviation
p_angle_d4.086
p_bond_d0.018
p_angle_deg
p_planar_d
p_hb_or_metal_coord
p_mcbond_it
p_mcangle_it
p_scbond_it
p_scangle_it
p_plane_restr
p_chiral_restr
p_singtor_nbd
p_multtor_nbd
p_xhyhbond_nbd
p_xyhbond_nbd
p_planar_tor
p_staggered_tor
p_orthonormal_tor
p_transverse_tor
p_special_tor
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms5990
Nucleic Acid Atoms
Solvent Atoms440
Heterogen Atoms110

Software

Software
Software NamePurpose
CCP4model building
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
CCP4phasing