4AUX

Tet repressor class D in complex with 9-nitrotetracycline

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	291	1 M (NH4)2S04, 200 MM NACL, 5 MM MGCL2 AND 20 MM TRIS-HCL, PH 8.0 WITH 10 MG/ML TETR, 2 MM 9-NITROTC AND 5 MM MGCL2, HANGING DROP, TEMPERATURE 291K

Crystal Properties
Matthews coefficient	Solvent content
2.2	45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 69.1	α = 90
b = 69.1	β = 90
c = 182.93	γ = 90

Symmetry
Space Group	I 41 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	277	IMAGE PLATE	MARRESEARCH			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	LURE BEAMLINE DW32		LURE	DW32

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	17.8	98.6	0.05	37	4.1		11066			33

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	2.3	96.6		0.17	3.2	4

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 2TCT	2.25	17.76	9996	832	98.63	0.21275	0.20877	0.25834	RANDOM	44.904

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]
0.48			0.48		-0.97

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	40.246
r_dihedral_angle_3_deg	15.931
r_dihedral_angle_4_deg	15.022
r_dihedral_angle_1_deg	5.487
r_angle_refined_deg	1.428
r_angle_other_deg	0.793
r_chiral_restr	0.074
r_bond_refined_d	0.011
r_gen_planes_refined	0.005
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_it
r_mcbond_other
r_mcangle_it
r_mcangle_other
r_scbond_it
r_scbond_other
r_scangle_it
r_scangle_other
r_long_range_B_refined
r_long_range_B_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1640
Nucleic Acid Atoms
Solvent Atoms	55
Heterogen Atoms	36

Software

Software
Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALA	data scaling
REFMAC	phasing