2PVT

Crystal structure of a new isoform of phospholipase A2 from russells viper at 2.1 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.8	298	0.3M Ammonium sulphate, 30% PEG8000, pH 6.8, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.57	52.21

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.53	α = 90
b = 53.53	β = 90
c = 48.414	γ = 90

Symmetry
Space Group	P 43

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	291	IMAGE PLATE	MAR scanner 345 mm plate	Mirror	2007-01-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU300	1.54132

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.1	53.45	96.2			7807	7442

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.1	2.18	80.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1SV3	2.1	23.94	7807	7442	361	96.37	0.2	0.16662	0.166	0.21735	RANDOM	27.667

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]
0.21			0.21		-0.42

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	19.226
r_scangle_it	4.328
r_dihedral_angle_1_deg	4.166
r_scbond_it	2.649
r_mcangle_it	2.033
r_angle_refined_deg	1.825
r_mcbond_it	1.068
r_angle_other_deg	0.846
r_nbd_refined	0.409
r_symmetry_vdw_other	0.272
r_xyhbond_nbd_refined	0.218
r_nbd_other	0.212
r_symmetry_hbond_refined	0.195
r_symmetry_vdw_refined	0.153
r_xyhbond_nbd_other	0.121
r_chiral_restr	0.102
r_bond_refined_d	0.018
r_gen_planes_refined	0.008
r_gen_planes_other	0.003
r_bond_other_d	0.001
r_dihedral_angle_2_deg
r_dihedral_angle_4_deg
r_nbtor_refined
r_nbtor_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	932
Nucleic Acid Atoms
Solvent Atoms	119
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345dtb	data collection
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing