1S8I

Crystal structure of Lys49-Phospholipase A2 from Agkistrodon contortrix laticinctus, second fatty acid free form

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	291	TRIS-HCl, ammonium sulfate, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.5	49.1

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 70.57	α = 90
b = 70.57	β = 90
c = 57.45	γ = 90

Symmetry
Space Group	P 41 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MAR scanner 345 mm plate	mirror	2002-10-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU ULTRAX 18	1.5418

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	1.609	26.631	99.8	0.061	0.061	49.5	14.6	35913	19354

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)
1	1.609	1.65	99.8		0.314	0.314	8.1	14.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	Sulfur-SAD at CuKa wavelength	THROUGHOUT	1.609	26.63	19354	18361	991	100	0.1867	0.18577	0.19	0.20531	0.22	RANDOM	15.416

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]
-0.17			-0.17		0.34

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.151
r_scangle_it	2.962
r_scbond_it	1.813
r_angle_refined_deg	1.295
r_mcangle_it	1.144
r_angle_other_deg	0.816
r_mcbond_it	0.619
r_symmetry_hbond_refined	0.452
r_symmetry_vdw_other	0.246
r_nbd_other	0.235
r_nbd_refined	0.209
r_xyhbond_nbd_refined	0.164
r_symmetry_vdw_refined	0.148
r_nbtor_other	0.083
r_chiral_restr	0.076
r_bond_refined_d	0.009
r_gen_planes_refined	0.006
r_gen_planes_other	0.005
r_bond_other_d	0.002
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_nbtor_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_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	972
Nucleic Acid Atoms
Solvent Atoms	155
Heterogen Atoms	5

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
SHELXD	phasing
SHARP	phasing
ARP/wARP	model building