4BXK

Crystal structure of the Angiotensin-1 converting enzyme N-domain in complex with a domain-specific inhibitor


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3NXQPDB ENTRY 3NXQ

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
18.50.06 M DIVALENT CATIONS, 0.1 M TRIS/BICINE PH 8.5, 30 % PEG550MME/PEG20000
Crystal Properties
Matthews coefficientSolvent content
2.9558

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 73.142α = 88.43
b = 77.255β = 64.28
c = 82.866γ = 75.29
Symmetry
Space GroupP 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS PILATUS 2M2012-12-03MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONDIAMOND BEAMLINE I04-1DiamondI04-1

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
12.229.6791.40.1210.53.973018
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.22.3288.70.852.63.9

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 REPLACEMENTTHROUGHOUTPDB ENTRY 3NXQ2.229.6969351366091.40.188250.186530.21965RANDOM28.232
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]
-0.291.990.630.120.080.65
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.227
r_dihedral_angle_4_deg14.779
r_dihedral_angle_3_deg14.102
r_dihedral_angle_1_deg5.589
r_angle_refined_deg1.183
r_angle_other_deg0.807
r_chiral_restr0.067
r_bond_refined_d0.008
r_gen_planes_refined0.005
r_bond_other_d0.002
RMS Deviations
KeyRefinement Restraint Deviation
r_dihedral_angle_2_deg35.227
r_dihedral_angle_4_deg14.779
r_dihedral_angle_3_deg14.102
r_dihedral_angle_1_deg5.589
r_angle_refined_deg1.183
r_angle_other_deg0.807
r_chiral_restr0.067
r_bond_refined_d0.008
r_gen_planes_refined0.005
r_bond_other_d0.002
r_gen_planes_other0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_it
r_mcbond_other
r_mcangle_it
r_mcangle_other
r_scbond_it
r_scbond_other
r_scangle_it
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms9885
Nucleic Acid Atoms
Solvent Atoms409
Heterogen Atoms329

Software

Software
Software NamePurpose
REFMACrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing