1AE7

NOTEXIN, A PRESYNAPTIC NEUROTOXIC PHOSPHOLIPASE A2

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.8		CRYSTALS WERE OBTAINED WHEN A PROTEIN SOLUTION WITH HALF OF THE PRECIPITANT CONCENTRATION OF THE WELL WAS EQUILIBRATED AGAINST 1.4M AMMONIUM SULFATE BUFFERED WITH 50MM CHES-BUFFER AT PH 7.8 WITH 2% DIOXANE PRESENT

Crystal Properties
Matthews coefficient	Solvent content
2.89	57.44

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 74.6	α = 90
b = 74.6	β = 90
c = 49	γ = 120

Symmetry
Space Group	P 31 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	298	AREA DETECTOR	SIEMENS	MIRROR	1990-09-01	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU FR-D

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	5	95	0.063				10387

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2	2.08	63.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	BOVINE PLA2	2	5	9629		94.6	0.192	0.192		21.31

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	23.29
x_angle_deg	2.608
x_improper_angle_d	1.174
x_bond_d	0.014
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 Atoms	Number
Protein Atoms	946
Nucleic Acid Atoms
Solvent Atoms	123
Heterogen Atoms	15

Software

Software
Software Name	Purpose
BUDDAH	data collection
BUDDAH	data reduction
POLARRFN	model building
X-PLOR	model building
X-PLOR	refinement
BUDDHA	data reduction
BUDDHA	data scaling
POLARRFN	phasing
X-PLOR	phasing