2ZKI

Crystal structure of hypothetical Trp repressor binding protein from Sul folobus tokodaii (ST0872)

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		293	1.8M ammonium sulfate, 5% iso-propanol, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.95	58.28

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 105.624	α = 90
b = 194.995	β = 90
c = 100.851	γ = 90

Symmetry
Space Group	P 21 21 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	IMAGE PLATE	RIGAKU RAXIS VII	conforcal mirrors	2005-10-03	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU FR-E+ SUPERBRIGHT	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	2.9	200	93.6	0.083	18.9	6.29	46470	43496			42.1

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)
	2.9	3	93.2		0.24

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1ZWK	2.9	100.85	41294	2200	92.82	0.20507	0.20233	0.25695	RANDOM	29.967

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]
-1.04			-1.05		2.1

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	29.268
r_dihedral_angle_3_deg	14.272
r_dihedral_angle_4_deg	13.444
r_dihedral_angle_1_deg	4.489
r_angle_refined_deg	0.846
r_scangle_it	0.606
r_mcangle_it	0.505
r_scbond_it	0.349
r_nbtor_refined	0.292
r_mcbond_it	0.28
r_nbd_refined	0.156
r_symmetry_vdw_refined	0.127
r_symmetry_hbond_refined	0.122
r_xyhbond_nbd_refined	0.108
r_chiral_restr	0.061
r_bond_refined_d	0.006
r_gen_planes_refined	0.002
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_refined
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	12080
Nucleic Acid Atoms
Solvent Atoms	228
Heterogen Atoms	245

Software

Software
Software Name	Purpose
REFMAC	refinement
CrystalClear	data collection
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing