1CL5

CRYSTAL STRUCTURE OF PHOSPHOLIPASE A2 FROM DABOIA RUSSELLI PULCHELLA

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1PP2	PDB ENTRY 1PP2

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7		PROTEIN WAS CRYSTALLISED FROM 1.2 AMMONIUM SULPHATE BUFFER WITH 20MM SODIUM CACODYLATE, 2MM CALCIUM CHLORIDE AND 3% DIOXANE, pH 7.0

Crystal Properties
Matthews coefficient	Solvent content
2.45	49

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 77.048	α = 90
b = 92.347	β = 90
c = 77.049	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	283	IMAGE PLATE	MARRESEARCH	PIN HOLE	1998-09-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200

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)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	2.45	20	97.8	0.098	0.098	16.02	6.04		61402		-3	35

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)	Redundancy	Number Unique Reflections (All)
	2.45	2.54	98.4		0.191	0.191	14.2	5.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1PP2	2.45	20	10169	541	98.7	0.188	0.267	RANDOM	28.6

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
Key	Refinement Restraint Deviation
x_dihedral_angle_d	26.8
x_scangle_it	6.03
x_scbond_it	4.2
x_mcangle_it	4.16
x_mcbond_it	2.7
x_angle_deg	1.1
x_improper_angle_d	0.62
x_bond_d	0.007
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

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1886
Nucleic Acid Atoms
Solvent Atoms	160
Heterogen Atoms

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
X-PLOR	refinement