1X3F

Crystal structure of the single-stranded DNA-binding protein from Mycobacterium SMEGMATIS

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.4	298	1M sodium acetate, 500mM sodium chloride, 50mM cadmium acetate, 20mM Tris-HCl, pH 7.4, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
1.7	28.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 78.014	α = 90
b = 78.014	β = 90
c = 71.018	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	IMAGE PLATE	MARRESEARCH			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	1.5418

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	2.7	20	99.4	0.011			7219	7150

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	2.7	2.8	100		0.526

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	2.7	20	6392	6392	698	99.55	0.20752	0.20752	0.20042	0.27459	RANDOM	45.56

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]
-2.58	-1.29		-2.58		3.87

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.65
r_scangle_it	5.705
r_scbond_it	2.974
r_mcangle_it	2.911
r_angle_refined_deg	1.576
r_mcbond_it	1.546
r_angle_other_deg	0.863
r_symmetry_hbond_refined	0.502
r_symmetry_vdw_refined	0.285
r_symmetry_vdw_other	0.265
r_xyhbond_nbd_refined	0.249
r_nbd_other	0.242
r_nbd_refined	0.229
r_nbtor_other	0.09
r_chiral_restr	0.087
r_metal_ion_refined	0.031
r_bond_refined_d	0.017
r_gen_planes_other	0.006
r_gen_planes_refined	0.005
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_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1629
Nucleic Acid Atoms
Solvent Atoms	171
Heterogen Atoms	2

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing