2IEF

Structure of the cooperative Excisionase (Xis)-DNA complex reveals a micronucleoprotein filament

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.2	298	30% PEG 4000, 0.2M Ammonium Acetate 0.1M Sodium Citrate, pH 6.2, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.27	57.88

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 111.655	α = 90
b = 111.655	β = 90
c = 76.268	γ = 120

Symmetry
Space Group	P 31 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 315	mirrors	2005-06-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.2	1.0	ALS	8.2.2

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	2.6	93.25	100	0.079	24.4	6.9	16295	16295			68.1

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)
1	2.6	2.69	100		0.451	5.13	7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	MAD	THROUGHOUT	2.601	55.81	16295	16295	863	99.92	0.20105	0.19876	0.2	0.24577	0.24	RANDOM	43.651

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]
-0.34	-0.17		-0.34		0.51

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.226
r_dihedral_angle_4_deg	21.558
r_dihedral_angle_3_deg	19.501
r_dihedral_angle_1_deg	7.928
r_scangle_it	3.913
r_scbond_it	2.799
r_mcbond_it	1.955
r_mcangle_it	1.788
r_mcbond_other	0.751
r_angle_other_deg	0.703
r_angle_refined_deg	0.653
r_nbd_other	0.254
r_symmetry_vdw_other	0.242
r_nbtor_refined	0.223
r_symmetry_vdw_refined	0.207
r_nbd_refined	0.202
r_xyhbond_nbd_refined	0.173
r_symmetry_hbond_refined	0.173
r_nbtor_other	0.082
r_chiral_restr	0.07
r_bond_refined_d	0.019
r_gen_planes_refined	0.01
r_bond_other_d	0.002
r_gen_planes_other	0.001
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1394
Nucleic Acid Atoms	1385
Solvent Atoms	39
Heterogen Atoms

Software

Software
Software Name	Purpose
BOS	data collection
SHELX	model building
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
SHELX	phasing