1TJ9

Structure of the complexed formed between group II phospholipase A2 and a rationally designed tetra peptide,Val-Ala-Arg-Ser at 1.1A resolution

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1SKG	pdb entry 1SKG

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	298	0.2M AMMONIUM SULPHATE, 30% PEG, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 298.0K

Crystal Properties
Matthews coefficient	Solvent content
2.5	50

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.513	α = 90
b = 52.513	β = 90
c = 48.037	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	2004-05-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X11	0.806	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	1.1	52	100	0.071	22.5	15.3	53031	53031			11

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	1.12	100		0.522	2.4

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 1SKG	1.1	52	53031	51861	1088	99.85	0.188	0.18707	0.18665	0.20896	RANDOM	13.218

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]
0.14			0.14		-0.28

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	15.643
r_dihedral_angle_1_deg	4.366
r_scangle_it	2.548
r_scbond_it	1.682
r_angle_refined_deg	1.646
r_mcangle_it	1.471
r_mcbond_it	0.841
r_angle_other_deg	0.707
r_nbd_refined	0.441
r_nbd_other	0.223
r_symmetry_vdw_refined	0.219
r_symmetry_vdw_other	0.211
r_xyhbond_nbd_refined	0.179
r_symmetry_hbond_refined	0.148
r_chiral_restr	0.087
r_bond_refined_d	0.011
r_gen_planes_refined	0.006
r_gen_planes_other	0.003
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	974
Nucleic Acid Atoms
Solvent Atoms	212
Heterogen Atoms	29

Software

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