2FBT | pdb_00002fbt

WRN exonuclease

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		INITIAL MODEL BUILT FROM 2.5A SELENOMET MAD DATASET, USED FOR MR

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		4.5	277	5ul of 4.5mg/ml WRN exonuclease buffered in 25mM Tris HCl, 100mM NaCl, pH7.5, mixed with 5ul 1% MPEG 2K, 200mM Na Acetate, pH 4.5 from the reservoir solution and 1ul EDTA additive. , VAPOR DIFFUSION, SITTING DROP, temperature 277K, pH 4.50

Crystal Properties
Matthews coefficient	Solvent content
3.7	66.77

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.269	α = 90
b = 80.269	β = 90
c = 93.23	γ = 120

Symmetry
Space Group	P 32 2 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	CCD	ADSC QUANTUM 210			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.2		ALS	5.0.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.05	27.87	99.7	20.8			21309			14.6

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)
	2.05	2.18	86.8		0.331	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-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	INITIAL MODEL BUILT FROM 2.5A SELENOMET MAD DATASET, USED FOR MR	2.05	27.87	20726	21309	1047	95.7	0.209	0.209	0.2	0.241	0.23	RANDOM	33.2

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]
7.73	4.42		7.73		-15.46

RMS Deviations
Key	Refinement Restraint Deviation
c_dihedral_angle_d	22.3
c_scangle_it	3.69
c_scbond_it	2.53
c_mcangle_it	2.13
c_mcbond_it	1.41
c_angle_deg	1.1
c_improper_angle_d	0.67
c_bond_d	0.006
c_bond_d_na
c_bond_d_prot
c_angle_d
c_angle_d_na
c_angle_d_prot
c_angle_deg_na
c_angle_deg_prot
c_dihedral_angle_d_na
c_dihedral_angle_d_prot
c_improper_angle_d_na
c_improper_angle_d_prot

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1589
Nucleic Acid Atoms
Solvent Atoms	262
Heterogen Atoms

Software

Software
Software Name	Purpose
HKL-2000	data collection
SCALEPACK	data scaling
AMoRE	phasing
CNS	refinement
HKL-2000	data reduction