1ALI

ALKALINE PHOSPHATASE MUTANT (H412N)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				THE STRUCTURE IS OF A MUTANT ALKALINE PHOSPHATE (H412N) IN WHICH HIS 412 IS REPLACED BY ASN, DETERMINED WITH CRYSTALS SOAKED IN STABILIZATION BUFFER CONTAINING 10 MM ZINC CHLORIDE. THERE ARE TWO ZINCS AND ONE MAGNESIUM COMPLEXED WITH AN INORGANIC PHOSPHATE BOUND IN EACH OF THE TWO ACTIVE SITES.

Crystal Properties
Matthews coefficient	Solvent content
3.31	62.88

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 194.86	α = 90
b = 167.43	β = 90
c = 76.53	γ = 90

Symmetry
Space Group	I 2 2 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		AREA DETECTOR	ADSC		1994-01-23	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	2.1	39.3	99.3	0.087		3.5		63998		3

Refinement

Statistics
Diffraction ID	Structure Solution Method	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		2.2	8	61876			0.174	0.174

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	23
x_angle_deg	2.03
x_improper_angle_d	1.58
x_bond_d	0.02
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	6558
Nucleic Acid Atoms
Solvent Atoms	239
Heterogen Atoms	16

Software

Software
Software Name	Purpose
ADSC	data collection
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing