1ELX

E. COLI ALKALINE PHOSPHATASE MUTANT (S102A)

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1ALK	PDB ENTRY 1ALK

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		7.5		25 MG/ML PROTEIN IN 39% SATURATING (NH4)2SO4, 100 MM TRIS, 10 MM MGCL2 100 MM ZNCL2, 2 MM NAH2PO4 AT PH 7.5, EQUILIBRATED AGAINST 55% SATURATING (NH4)2SO4

Crystal Properties
Matthews coefficient	Solvent content
3.3	56.82

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 163.62	α = 90
b = 163.62	β = 90
c = 138.88	γ = 120

Symmetry
Space Group	P 63 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	292	AREA DETECTOR	XUONG-HAMLIN MULTIWIRE		1996-07-28	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)	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	2.6	37	95.5	0.102	6.3	2.5		32650			22

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.6	2.7	88.5		0.401	1.2	2.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work (Depositor)	R-Free (Depositor)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	IMPLOR-CYCLING TEST SETS	PDB ENTRY 1ALK	2.6	9	2	24868	4	85	0.158	0.158	0.207	12.76

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	25.6
x_angle_deg	2
x_improper_angle_d	1.8
x_bond_d	0.017
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6606
Nucleic Acid Atoms
Solvent Atoms	605
Heterogen Atoms	16

Software

Software
Software Name	Purpose
SDMS	data collection
SDMS	data reduction
X-PLOR	model building
X-PLOR	refinement
SDMS	data scaling
X-PLOR	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.