3EGQ

Crystal structure of a tetr-family transcriptional regulator (af_1817) from archaeoglobus fulgidus at 2.55 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	4.35	293	0.2M sodium chloride, 38.4% polyethylene glycol 200, 0.1M phosphate-citrate pH 4.35, NANODROP', VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.35	47.72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 57.55	α = 90
b = 61.04	β = 90
c = 109.94	γ = 90

Symmetry
Space Group	P 21 21 21

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	MARMOSAIC 325 mm CCD	Flat collimating mirror, toroid focusing mirror	2008-05-01	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.91162, 0.97927, 0.97913	SSRL	BL9-2

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	2.55	29.412	96.7	0.036	13.52			13034		-3	67.119

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	2.54	2.63	85.6		0.301	2.7

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	MAD	THROUGHOUT	2.55	29.412	13001	643	98.86	0.244	0.243	0.275	RANDOM	58.375

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]
-3.63			4.45		-0.82

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	24.356
r_dihedral_angle_4_deg	14.548
r_dihedral_angle_3_deg	10.12
r_scangle_it	7.32
r_scbond_it	6.073
r_mcangle_it	2.551
r_dihedral_angle_1_deg	2.488
r_angle_refined_deg	2.262
r_angle_other_deg	1.903
r_mcbond_it	1.799
r_mcbond_other	0.406
r_symmetry_vdw_refined	0.16
r_nbd_refined	0.135
r_nbtor_refined	0.122
r_chiral_restr	0.102
r_xyhbond_nbd_refined	0.102
r_symmetry_vdw_other	0.1
r_nbd_other	0.091
r_symmetry_hbond_refined	0.089
r_nbtor_other	0.063
r_bond_refined_d	0.027
r_gen_planes_refined	0.009
r_bond_other_d	0.005
r_gen_planes_other	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2515
Nucleic Acid Atoms
Solvent Atoms	9
Heterogen Atoms	50

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SHELX	phasing
MolProbity	model building
XSCALE	data scaling
PDB_EXTRACT	data extraction
XDS	data reduction
SHELXD	phasing
autoSHARP	phasing