2QZI

The crystal structure of a conserved protein of unknown function from Streptococcus thermophilus LMG 18311.

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	293	35% Tacsimate, pH 7.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.5	64.9

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 150.783	α = 90
b = 150.783	β = 90
c = 103.247	γ = 120

Symmetry
Space Group	P 64 2 2

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 315	Mirrors	2007-06-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-ID	0.97937	APS	19-ID

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	2.2	36.23	99.2	0.095	54.3	18	35201	35201			45.3

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	2.2	2.25	92.7		0.63	4.1	14.3	2143

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	2.2	36.23	33315	33315	1755	98.76	0.21229	0.21229	0.21025	0.25112	RANDOM	75.199

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]
-0.81	-0.4		-0.81		1.21

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.24
r_dihedral_angle_4_deg	20.347
r_dihedral_angle_3_deg	19.655
r_dihedral_angle_1_deg	8.482
r_scangle_it	4.788
r_scbond_it	3.089
r_angle_refined_deg	1.961
r_mcangle_it	1.76
r_mcbond_it	0.999
r_nbtor_refined	0.31
r_nbd_refined	0.241
r_symmetry_hbond_refined	0.188
r_symmetry_vdw_refined	0.178
r_chiral_restr	0.169
r_xyhbond_nbd_refined	0.154
r_metal_ion_refined	0.083
r_bond_refined_d	0.021
r_gen_planes_refined	0.009
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_other
r_symmetry_vdw_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	3298
Nucleic Acid Atoms
Solvent Atoms	163
Heterogen Atoms	11

Software

Software
Software Name	Purpose
REFMAC	refinement
SBC-Collect	data collection
HKL-3000	data reduction
HKL-3000	data scaling
HKL-3000	phasing
SHELXD	phasing
MLPHARE	phasing
DM	phasing