1ZWP

The atomic resolution Crystal structure of the Phospholipase A2 (PLA2) complex with Nimesulide reveals its weaker binding to PLA2

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	298	0.2M Ammonium sulphate, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.5	49.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.273	α = 90
b = 52.273	β = 90
c = 47.804	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	203	CCD	MARRESEARCH	MIRROR	2005-03-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X31	0.803	EMBL/DESY, HAMBURG	X31

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.1	52.2	99.8	0.06	18.2		51783	51691

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.1	1.12	99.9		0.372	2.3		3426

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	PDB ENTRY 1FB2	1.1	52.2	51691	49031	2629	99.64	0.13242	0.13136	0.13014	0.1469	RANDOM	13.473

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]
0.05			0.05		-0.11

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	27.452
r_dihedral_angle_3_deg	13.973
r_dihedral_angle_4_deg	7.337
r_sphericity_free	7.05
r_dihedral_angle_1_deg	6.104
r_scangle_it	4.447
r_scbond_it	3.801
r_sphericity_bonded	3.536
r_rigid_bond_restr	3.424
r_mcangle_it	2.892
r_mcbond_it	2.393
r_angle_refined_deg	1.668
r_angle_other_deg	0.914
r_mcbond_other	0.799
r_nbd_refined	0.405
r_symmetry_vdw_refined	0.359
r_symmetry_vdw_other	0.301
r_xyhbond_nbd_refined	0.247
r_nbd_other	0.213
r_nbtor_refined	0.2
r_symmetry_hbond_refined	0.173
r_chiral_restr	0.099
r_nbtor_other	0.095
r_bond_refined_d	0.016
r_gen_planes_refined	0.01
r_gen_planes_other	0.007
r_bond_other_d	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1012
Nucleic Acid Atoms
Solvent Atoms	290
Heterogen Atoms	41

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
AMoRE	phasing