1X3G

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
2.1	40.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 79.886	α = 90
b = 79.886	β = 90
c = 81.288	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	298	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	3	20	96.1	0.114			6324	6048

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)
	3	3.11	98		0.481

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	3	20	5455	5455	587	96.39	0.20941	0.20941	0.20399	0.25807	RANDOM	39.172

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]
-0.69	-0.34		-0.69		1.03

RMS Deviations
Key	Refinement Restraint Deviation
r_scangle_it	7.03
r_dihedral_angle_1_deg	4.858
r_scbond_it	3.795
r_mcangle_it	3.371
r_angle_other_deg	1.964
r_angle_refined_deg	1.879
r_mcbond_it	1.766
r_symmetry_hbond_refined	1.413
r_symmetry_vdw_refined	0.438
r_symmetry_vdw_other	0.351
r_nbd_other	0.271
r_nbd_refined	0.257
r_xyhbond_nbd_refined	0.191
r_metal_ion_refined	0.152
r_chiral_restr	0.101
r_nbtor_other	0.092
r_bond_refined_d	0.022
r_gen_planes_refined	0.005
r_gen_planes_other	0.005
r_bond_other_d	0.001
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	1647
Nucleic Acid Atoms
Solvent Atoms	76
Heterogen Atoms	1

Software

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