3NIC

DNA binding and cleavage by the GIY-YIG endonuclease R.Eco29kI inactive variant Y49F

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	298	0.1 M sodium acetate trihydrate, 2M ammonium sulphate, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.53	51.35

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 99.87	α = 90
b = 101.346	β = 109.59
c = 142.346	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	110	CCD	ADSC QUANTUM 315		2010-05-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.1	1.0	ALS	5.0.1

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	2.8	50	99.5	0.106	18.69	7.4	65980	62596			13.44

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)
	2.8	2.87	97.7		0.345	4.36	6.9	6405

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	DNA-bound-L69K-E142Q-R.Eco29kI	2.8	50	65980	62596	3347	99.5	0.20996	0.20641	0.27856	RANDOM	46.075

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]
-3.1		0.61	-3.51		7.02

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.971
r_dihedral_angle_3_deg	19.836
r_dihedral_angle_4_deg	18.813
r_dihedral_angle_1_deg	7.224
r_scangle_it	2.486
r_angle_refined_deg	1.971
r_scbond_it	1.547
r_mcangle_it	1.223
r_mcbond_it	0.64
r_chiral_restr	0.112
r_bond_refined_d	0.016
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	13150
Nucleic Acid Atoms	3608
Solvent Atoms	466
Heterogen Atoms	55

Software

Software
Software Name	Purpose
ADSC	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling