2VA8

DNA Repair Helicase Hel308

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5		15.3% PEG8000, 0.1M SODIUM CACODYLATE, PH6.5, 0.13M AMMONIUM SULFATE AND 0.03M MAGNESIUM CHLORIDE

Crystal Properties
Matthews coefficient	Solvent content
2.8	57

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 61.657	α = 90
b = 138.083	β = 94.65
c = 107.551	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	100	CCD	ADSC CCD	MIRRORS	2006-12-12	M	SINGLE WAVELENGTH
2	1	x-ray		CCD	ADSC CCD			M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-1		ESRF	ID14-1
2	SYNCHROTRON	ESRF BEAMLINE BM14		ESRF	BM14

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	2.3	30	99	0.078	14.7	6		79222

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	2.3	2.42	99.3		0.309	4.2	3.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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	TRACED FROM MAD DATASET	2.3	107.21	75297	3995	99.7	0.214	0.212	0.259	RANDOM	45.77

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]
0.67		-3.11	-0.11		-1.07

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.879
r_dihedral_angle_4_deg	16.446
r_dihedral_angle_3_deg	16.02
r_dihedral_angle_1_deg	5.497
r_scangle_it	2.101
r_scbond_it	1.341
r_angle_refined_deg	1.182
r_mcangle_it	0.827
r_mcbond_it	0.505
r_nbtor_refined	0.297
r_symmetry_hbond_refined	0.293
r_nbd_refined	0.196
r_symmetry_vdw_refined	0.179
r_xyhbond_nbd_refined	0.146
r_chiral_restr	0.076
r_bond_refined_d	0.011
r_gen_planes_refined	0.004
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_mcangle_other
r_scbond_other
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	11116
Nucleic Acid Atoms
Solvent Atoms	146
Heterogen Atoms	35

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALEPACK	data scaling