3K2Z

Crystal structure of a LexA protein from Thermotoga maritima

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	hanging drop	6.8	292	0.1M Bis-tris propane, 0.4M ammonium sulfate, 10% glycerol, pH 6.8, hanging drop, temperature 292K

Crystal Properties
Matthews coefficient	Solvent content
2.27	45.77

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 116.77	α = 90
b = 62.676	β = 98.98
c = 57.017	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 315	mirros	2005-12-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-BM-C	0.9	APS	14-BM-C

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.37	25		0.044	21.2	3.6	85313	85313

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	SAD	THROUGHOUT	1.37	13.51	79525	6440	92.73	0.205	0.203	0.231	RANDOM	18.569

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]
-0.03		0.01	-0.03		0.06

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	27.847
r_dihedral_angle_4_deg	17.555
r_dihedral_angle_3_deg	11.284
r_dihedral_angle_1_deg	6.407
r_sphericity_free	4.609
r_scangle_it	4.043
r_sphericity_bonded	3.816
r_scbond_it	3.741
r_rigid_bond_restr	3.574
r_mcangle_it	1.897
r_mcbond_it	1.287
r_angle_refined_deg	1.286
r_nbtor_refined	0.312
r_nbd_refined	0.19
r_symmetry_vdw_refined	0.175
r_symmetry_hbond_refined	0.128
r_xyhbond_nbd_refined	0.115
r_chiral_restr	0.085
r_bond_refined_d	0.009
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3157
Nucleic Acid Atoms
Solvent Atoms	378
Heterogen Atoms	6

Software

Software
Software Name	Purpose
MLPHARE	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
DENZO	data reduction
SCALEPACK	data scaling
HKL-2000	data scaling