1NUL

XPRTASE FROM E. COLI

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8		XPRT WAS CRYSTALLISED FROM 18 - 23% PEG 4000, 0.1 M LI2SO4 IN 0.1 M TRIS-HCL, PH 8., pH 8.0

Crystal Properties
Matthews coefficient	Solvent content
2.15	43

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.2	α = 90
b = 92.7	β = 90
c = 53.2	γ = 90

Symmetry
Space Group	P 21 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	289	IMAGE PLATE	RIGAKU	MIRRORS	1995-05-22	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	1.8	53.2	92	0.06	14.8	3		25622		1	19.5

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)
1	1.8	2	84		0.263	3.2	2.4

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	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	MULTIPLE ISOMORPHOUS REPLACEMENT	THROUGHOUT	1.8	8	2	25198	2495	91.8	0.192	0.192	0.234	RANDOM	25.5

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
x_mcangle_it	3.38
x_scbond_it	3.26
x_scangle_it	3.26
x_mcbond_it	2.14
x_angle_deg	1.37
x_improper_angle_d	1.19
x_bond_d	0.007
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

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2127
Nucleic Acid Atoms
Solvent Atoms	212
Heterogen Atoms	12

Software

Software
Software Name	Purpose
PHASES	phasing
X-PLOR	model building
X-PLOR	refinement
PROCESS	data reduction
PROCESS	data scaling
X-PLOR	phasing