1JIA

STRUCTURE OF A BASIC PHOSPHOLIPASE A2 FROM AGKISTRODON HALYS PALLAS AT 2.13A RESOLUTION


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
19.5THE PROTEIN SOLUTIONS CONTAINED 10MM CA2+, 0.1M NACL, 5% PEG 4K IN 0.01M CHESS BUFFER (PH 9.5) AND AN ENZYME CONCENTRATION OF 11MG/ML; THE SOLUTION IN RESERVOIR CONTAINED 10% PEG 4K IN SAME BUFFER, ROOM TEMPERATURE OF 17 DEGREES C.
Crystal Properties
Matthews coefficientSolvent content
2.0937

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 97.13α = 90
b = 103.69β = 90
c = 23.27γ = 90
Symmetry
Space GroupP 21 21 21

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray280AREA DETECTORSIEMENS-NICOLET X200B1995-05-27M
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1ROTATING ANODERIGAKU RUH2R

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
12.134086.10.045931.22.51200126.24
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)
2.132.2346.280.1764.91.6

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONSTRUCTURE REFINEMENTFULL REFINEMENT CONSISTING OF INITIAL MINIMIZATION, SLOW COOLING-SA 3000K, POSITIONAL AND B-FACTOR REFINEMENT.2.136310174106377.80.1520.1520.255RANDOM25.41
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
x_dihedral_angle_d23.4
x_angle_deg2.72
x_improper_angle_d1.29
x_bond_d0.013
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
RMS Deviations
KeyRefinement Restraint Deviation
x_dihedral_angle_d23.4
x_angle_deg2.72
x_improper_angle_d1.29
x_bond_d0.013
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms1916
Nucleic Acid Atoms
Solvent Atoms190
Heterogen Atoms2

Software

Software
Software NamePurpose
XENGENdata collection
XENGENdata reduction
X-PLORmodel building
X-PLORrefinement
XENGENdata scaling
X-PLORphasing