1ZR8

Crystal Structure of the complex formed between group II phospholipase A2 and a plant alkaloid ajmaline at 2.0A resolution

X-RAY DIFFRACTION

---

Crystallization

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

Crystal Properties
Matthews coefficient	Solvent content
2.5	50

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 53.257	α = 90
b = 53.257	β = 90
c = 48.657	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	300	IMAGE PLATE	MARRESEARCH	mirror	2005-04-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU300	1.5418

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	2.03	54.5	98	0.077	10.9		67845	8322			32.9

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)
	2.03	2.12	94.1		0.528	2.8

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	2.03	20	8307	8307	419	98.12	0.1896	0.1896	0.18596	0.22146	RANDOM	25.475

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	14.454
r_angle_refined_deg	3.925
r_scangle_it	3.601
r_scbond_it	2.314
r_dihedral_angle_1_deg	2.019
r_mcangle_it	1.9
r_angle_other_deg	1.402
r_nbtor_other	1.033
r_mcbond_it	0.994
r_nbd_refined	0.447
r_chiral_restr	0.342
r_symmetry_vdw_refined	0.278
r_xyhbond_nbd_other	0.256
r_nbd_other	0.243
r_xyhbond_nbd_refined	0.226
r_symmetry_vdw_other	0.213
r_symmetry_hbond_refined	0.212
r_symmetry_hbond_other	0.051
r_gen_planes_other	0.035
r_gen_planes_refined	0.03
r_bond_refined_d	0.014
r_bond_other_d	0.003
r_dihedral_angle_2_deg
r_dihedral_angle_4_deg
r_nbtor_refined
r_metal_ion_refined
r_metal_ion_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	944
Nucleic Acid Atoms
Solvent Atoms	114
Heterogen Atoms	32

Software

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