1T6M

X-ray Structure of the R70D PI-PLC enzyme: Insight into the role of calcium and surrounding amino acids on active site geometry and catalysis.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	9.5	298	30% PEG-3000, 0.2M NH4Cl, 20 mM CHES Buffer, pH 9.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.5	54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 91.221	α = 90
b = 147.725	β = 90
c = 96.562	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		CCD	ADSC QUANTUM 4		2001-12-01	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.2	0.99	ALS	5.0.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.107	43.437				37925	37903

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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	2.107	43.3	36951	3711	99.67	0.2233	0.2233	0.2397	RANDOM	19.493

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]
-2.999			1.952		1.047

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.152
r_dihedral_angle_3_deg	16.664
r_dihedral_angle_4_deg	7.699
r_dihedral_angle_1_deg	7.613
r_scangle_it	3.062
r_scbond_it	2.023
r_angle_refined_deg	1.546
r_mcangle_it	1.397
r_angle_other_deg	0.957
r_mcbond_it	0.84
r_xyhbond_nbd_other	0.517
r_symmetry_hbond_refined	0.319
r_xyhbond_nbd_refined	0.29
r_symmetry_vdw_other	0.264
r_symmetry_vdw_refined	0.262
r_nbd_refined	0.258
r_nbd_other	0.202
r_mcbond_other	0.158
r_chiral_restr	0.107
r_nbtor_other	0.088
r_bond_refined_d	0.013
r_gen_planes_refined	0.005
r_bond_other_d	0.002
r_gen_planes_other	0.001
r_nbtor_refined
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4836
Nucleic Acid Atoms
Solvent Atoms	228
Heterogen Atoms	4

Software

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