7NWB

CRYSTAL STRUCTURE OF HUMAN CYTOSOLIC BRANCHED-CHAIN AMINOTRANSFERASE (BCAT1) IN COMPLEX WITH PLP AND INHIBITOR COMPOUND 1


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 2ABJ 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP8293PROTEIN AT 17 MG/ML IN 10 MILLIMOLAR TRIS-HCL PH 8.0, 100 MILLIMOLAR NACL, 3 MILLIMOLAR DTT. PROTEIN PREINCUBATED OVER NIGHT AT 293 K WITH 10 MILLIMOLAR 3-PHENYL-PROPIONATE, 3 MILLIMOLAR DTT AND 1.5 MILLIMOLAR PLP. DROPS MADE FROM 1 MICROLITER PROTEIN AND 1 MICROLITER RESERVOIR (225 MILLIMOLAR MGCL2, 16-20 % (W/V) PEG 3350). INHIBITOR SOAKED INTO PREFORMED CRYSTALS FOR 5 DAYS AT 10 MILLIMOLAR. CRYO: RESERVOIR SOLUTION COMPLEMENTED WITH 20 % (V/V) GLYCEROL AND 10 MILLIMOLAR INHIBITOR
Crystal Properties
Matthews coefficientSolvent content
2.7455.16

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 81.99α = 90
b = 110.448β = 103.4
c = 107.832γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS 6M2016-08-17MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONBESSY BEAMLINE 14.10.9184BESSY14.1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)Rrim I (All)CC (Half)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
12.6447.3890.90.1210.9939.62.715017544.37
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)Rrim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.642.890.50.6950.7331.892.5

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT2ABJ2.6447.3848075210090.970.18740.18560.2275RANDOM42.565
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]
-1.180.720.630.19
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg36.075
r_dihedral_angle_4_deg19.469
r_dihedral_angle_3_deg16.127
r_dihedral_angle_1_deg7.053
r_angle_refined_deg1.361
r_angle_other_deg1.156
r_chiral_restr0.057
r_bond_refined_d0.005
r_gen_planes_refined0.005
r_bond_other_d0.001
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg36.075
r_dihedral_angle_4_deg19.469
r_dihedral_angle_3_deg16.127
r_dihedral_angle_1_deg7.053
r_angle_refined_deg1.361
r_angle_other_deg1.156
r_chiral_restr0.057
r_bond_refined_d0.005
r_gen_planes_refined0.005
r_bond_other_d0.001
r_gen_planes_other0.001
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms11529
Nucleic Acid Atoms
Solvent Atoms360
Heterogen Atoms176

Software

Software
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction