1S7O

Crystal structure of putative DNA binding protein SP_1288 from Streptococcus pygenes

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	3.2	293	Citric Acid, Ammonium Nitrate, pH 3.2, VAPOR DIFFUSION, HANGING DROP, temperature 293.0K

Crystal Properties
Matthews coefficient	Solvent content
3.19	61.17

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 127.608	α = 90
b = 69.685	β = 103.04
c = 55.247	γ = 90

Symmetry
Space Group	C 1 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 4	Mirrors	2003-11-08	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.2	0.9794	ALS	5.0.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	2.3	38	99.8	0.066	0.066	19	4	40688	40607			39

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.3	2.38	99.8		0.336	0.336	4	4	4066

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	SAD	THROUGHOUT	2.31	38.35	19476	19476	1053	98.67	0.2081	0.2081	0.20651	0.23686	RANDOM	27.264

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]
-1.85		-0.4	2.2		-0.54

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	15.007
r_scangle_it	5.005
r_dihedral_angle_1_deg	3.628
r_scbond_it	3.038
r_mcangle_it	1.743
r_angle_refined_deg	1.558
r_mcbond_it	0.86
r_symmetry_hbond_refined	0.335
r_symmetry_vdw_refined	0.313
r_nbd_refined	0.254
r_xyhbond_nbd_refined	0.182
r_chiral_restr	0.1
r_bond_refined_d	0.017
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2691
Nucleic Acid Atoms
Solvent Atoms	103
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
Blu-Ice	data collection
HKL-2000	data scaling
SOLVE	phasing