1O7I

Crystal structure of a single stranded DNA binding protein

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5	298	CITRIC ACID, AMMONIUM SULFATE, PH 5.0, VAPOUR DIFFUSION, HANGING DROP AT 298K

Crystal Properties
Matthews coefficient	Solvent content
2.25	45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 75.805	α = 90
b = 75.805	β = 90
c = 70.118	γ = 120

Symmetry
Space Group	P 61

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	130	CCD	ADSC CCD	MIRRORS	2002-03-15	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX14.2	0.9600, 0.9780, 0.9786	SRS	PX14.2

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	1.69	37.3	100	0.054	8.1	16.6		24609

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	1.69	1.73	100		0.352	2.2	16.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	MAD	THROUGHOUT	1.2	65	67603	3605	99.8	0.193	0.191	0.219	RANDOM	10.73

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]
0.39	0.2		0.39		-0.59

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.495
r_scangle_it	4.119
r_scbond_it	2.775
r_mcangle_it	2.233
r_angle_refined_deg	1.61
r_mcbond_it	1.485
r_angle_other_deg	0.889
r_symmetry_vdw_other	0.334
r_nbd_other	0.252
r_nbd_refined	0.229
r_xyhbond_nbd_refined	0.208
r_symmetry_vdw_refined	0.192
r_symmetry_hbond_refined	0.152
r_chiral_restr	0.115
r_nbtor_other	0.075
r_bond_refined_d	0.015
r_gen_planes_other	0.013
r_gen_planes_refined	0.009
r_bond_other_d	0.002
r_dihedral_angle_2_deg
r_dihedral_angle_3_deg
r_dihedral_angle_4_deg
r_nbtor_refined
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_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	1731
Nucleic Acid Atoms
Solvent Atoms	271
Heterogen Atoms	15

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
SOLVE	phasing