2B18

N-terminal GAF domain of transcriptional pleiotropic repressor CodY.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	291	PEG 5000, calcium acetate, isoleucine, pH 7.0, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.2	44.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 34.696	α = 90
b = 86.081	β = 90
c = 54.819	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	CCD	MARRESEARCH	Rh coated collimating mirrors	2005-03-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SRS BEAMLINE PX10.1	0.98000	SRS	PX10.1

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	1.7	50	88.6	0.061	20.2	3.6	16841	16841

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)
	1.7	1.73	29.2		0.27	1.7	1.9	275

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	1.8	20	14653	14653	775	100	0.1564	0.1564	0.15351	0.21234	RANDOM	31.063

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]
0.1			-0.06		-0.05

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	39.178
r_dihedral_angle_3_deg	14.704
r_dihedral_angle_4_deg	12.726
r_scangle_it	9.854
r_scbond_it	7.643
r_dihedral_angle_1_deg	5.683
r_mcangle_it	5.362
r_mcbond_it	4.426
r_mcbond_other	2.433
r_angle_refined_deg	1.341
r_angle_other_deg	0.807
r_symmetry_vdw_other	0.314
r_nbd_refined	0.218
r_symmetry_hbond_refined	0.21
r_nbd_other	0.181
r_xyhbond_nbd_refined	0.181
r_symmetry_vdw_refined	0.176
r_nbtor_refined	0.173
r_nbtor_other	0.083
r_chiral_restr	0.076
r_xyhbond_nbd_other	0.026
r_bond_refined_d	0.013
r_gen_planes_refined	0.004
r_bond_other_d	0.001
r_gen_planes_other	0.001
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1248
Nucleic Acid Atoms
Solvent Atoms	129
Heterogen Atoms	9

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
HKL2Map	phasing