1QLP

2.0 ANGSTROM STRUCTURE OF INTACT ALPHA-1-ANTITRYPSIN: A CANONICAL TEMPLATE FOR ACTIVE SERPINS


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1624% PEG 4000, 0.2 M SODIUM ACETATE, 0.1M TRIS-HCL PH 6.0, 2MM FESO4.7H20
Crystal Properties
Matthew coefficientSolvent content
2.637.2

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 114.68α = 90
b = 39.26β = 104.21
c = 90.27γ = 90
Symmetry
Space GroupC 1 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARRESEARCHMIRRORS1998-09-09MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSRS BEAMLINE PX9.6SRSPX9.6

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (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
122593.60.0790.0675.93.325057229.41
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)R-Sym I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
122.0595.20.5140.4151.62.4

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 REPLACEMENTFREE R-VALUETHERMOSTABLE VARIANT ALPHA1-ANTITRYPSIN (PDB ENTRY 1PSI)22525039127193.60.2310.2310.266RANDOM38.38
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]
-4.094-6.0050.6013.493
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d24.95182
c_mcangle_it4.732
c_mcbond_it3.502
c_scangle_it3.453
c_scbond_it2.219
c_angle_deg1.30665
c_improper_angle_d1.23128
c_bond_d0.006917
c_angle_deg_prot
c_bond_d_na
RMS Deviations
KeyRefinement Restraint Deviation
c_dihedral_angle_d24.95182
c_mcangle_it4.732
c_mcbond_it3.502
c_scangle_it3.453
c_scbond_it2.219
c_angle_deg1.30665
c_improper_angle_d1.23128
c_bond_d0.006917
c_angle_deg_prot
c_bond_d_na
c_dihedral_angle_d_na
c_angle_d_prot
c_angle_d_na
c_improper_angle_d_na
c_improper_angle_d_prot
c_angle_d
c_bond_d_prot
c_angle_deg_na
c_dihedral_angle_d_prot
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2956
Nucleic Acid Atoms
Solvent Atoms106
Heterogen Atoms

Software

Software
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling
CNSphasing