1QAS

1-PHOSPHATIDYLINOSITOL-4,5-BISPHOSPHATE PHOSPHODIESTERASE DELTA 1

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	clusters formed by mixing - used as seeds in hanging drops	6.5		NEEDLE CLUSTERS WERE FORMED BY MIXING EQUAL VOLUMES OF PROTEIN SOLUTION (22 MG/ML) WITH A WELL SOLUTION CONSISTING OF 0.1 M NA MES (PH 6.0), 0.2 M LICL, 20% GLYCEROL, AND 12-14 % PEG 8000. FRAGMENTS OF THE NEEDLE CLUSTERS WERE USED TO SEED HANGING DROPS. THE WELL SOLUTION USED FOR THE SEEDING EXPERIMENTS WAS ADJUSTED TO 0.1M NA MES (PH 6.5), 0.2 M LICL, 20 % GLYCEROL, AND 6-8 % PEG 8000., clusters formed by mixing - used as seeds in hanging drops

Crystal Properties
Matthews coefficient	Solvent content
2.72	52.76

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 61.1	α = 66.9
b = 75.4	β = 85.4
c = 86.9	γ = 89.8

Symmetry
Space Group	P 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	RIGAKU	MIRRORS	1995-10-17	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH2R

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.4	60	86.4	0.063	0.063	10.9	1.76		47893		-2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.4	2.49	44.5		0.296	0.296	2.1	1.42

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R	CUBIC PHOSPHOLIPASE C	2.4	6	40803	2173		0.212	0.212	0.286

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]

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	24.9
x_angle_deg	1.6
x_improper_angle_d	1.377
x_bond_d	0.011
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7982
Nucleic Acid Atoms
Solvent Atoms	266
Heterogen Atoms

Software

Software
Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing