4HSR

Crystal Structure of a class III engineered cephalosporin acylase


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP8.529110-20% PEG8000, 10 mM Tris-HCl, pH 8.0-8.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K
Crystal Properties
Matthews coefficientSolvent content
358.94

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 68.161α = 90
b = 77.018β = 90
c = 192.138γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDADSC QUANTUM 315r2010-06-24MMAD
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAUSTRALIAN SYNCHROTRON BEAMLINE MX20.95360Australian SynchrotronMX2

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge 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
11.5796.0796.90.25489.7558555585522.12

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (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 DIFFRACTIONMADTHROUGHOUT2.1396.075585552947283196.90.153970.153970.151660.19836RANDOM25.286
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]
-0.251.43-1.17
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg33.975
r_dihedral_angle_4_deg19.888
r_dihedral_angle_3_deg14.901
r_dihedral_angle_1_deg6.883
r_angle_refined_deg2.016
r_chiral_restr0.139
r_bond_refined_d0.019
r_gen_planes_refined0.011
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms5757
Nucleic Acid Atoms
Solvent Atoms561
Heterogen Atoms10

Software

Software
Software NamePurpose
Blu-Icedata collection
SHELXSphasing
REFMACrefinement
XDSdata reduction
SCALAdata scaling