1TH6

Crystal structure of phospholipase A2 in complex with atropine at 1.23A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	298	0.2M ammonium sulphate, 30% PEG 4000, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.4	47.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.331	α = 90
b = 52.331	β = 90
c = 48.071	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	200	CCD	MARRESEARCH	Mirror	2004-04-19	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X11	0.803	EMBL/DESY, HAMBURG	X11

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	1.23	51.99	99.82	0.053	33.2		37504	37504

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.23	1.25	100		3.7

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	pdb entry 1SKG	1.23	51.99	37504	36667	767	99.82	0.18909	0.18877	0.20444	RANDOM	14.146

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]
0.19			0.19		-0.39

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	17.451
r_dihedral_angle_1_deg	3.975
r_scangle_it	2.164
r_angle_refined_deg	1.946
r_scbond_it	1.399
r_mcangle_it	1.191
r_angle_other_deg	0.79
r_mcbond_it	0.635
r_nbd_refined	0.435
r_symmetry_hbond_refined	0.235
r_nbd_other	0.213
r_chiral_restr	0.211
r_xyhbond_nbd_refined	0.21
r_symmetry_vdw_refined	0.2
r_symmetry_vdw_other	0.162
r_bond_refined_d	0.008
r_gen_planes_refined	0.006
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	943
Nucleic Acid Atoms
Solvent Atoms	247
Heterogen Atoms	41

Software

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