2UGI

PROTEIN MIMICRY OF DNA FROM CRYSTAL STRUCTURES OF THE URACIL GLYCOSYLASE INHIBITOR PROTEIN AND ITS COMPLEX WITH ESCHERICHIA COLI URACIL-DNA GLYCOSYLASE

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		UGI FROM THE HUMAN UDG:UGI CRYSTAL STRUCTURE

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		8.2	293	(NH4)2SO4, IMIDAZOLE, MALATE, (NH4)2SO4, pH 8.2, temperature 293.0K

Crystal Properties
Matthews coefficient	Solvent content
2.4	48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.092	α = 90
b = 59.387	β = 90
c = 73.583	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	150	CCD	PRINCETON 2K			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE A1		CHESS	A1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.2	30	95.5	0.069	19.7	3.6		9507			35.2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.2	2.26	91.8		0.251	6.2	3

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	UGI FROM THE HUMAN UDG:UGI CRYSTAL STRUCTURE	2.2	20	9435	9435	958	96.1	0.227	0.28	RANDOM	47

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]
-8.34			5.643		2.7

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	25.3
x_scangle_it	3.888
x_mcangle_it	2.724
x_scbond_it	2.417
x_mcbond_it	1.556
x_angle_deg	1.5
x_improper_angle_d	1.25
x_bond_d	0.008
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	1308
Nucleic Acid Atoms
Solvent Atoms	71
Heterogen Atoms	5

Software

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