2P5K

Crystal structure of the N-terminal domain of AhrC

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	277	24% PEG 8000, 0.1M sodium cacodylate, 0.1M sodium acetate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
1.84	33.16

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 25.108	α = 90
b = 32.9	β = 90
c = 66.226	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	ADSC QUANTUM 4			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID14-4	0.939	ESRF	ID14-4

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	19.96	89.4	0.094	0.094	12.8	4.2		26874			5.4

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1	1.05	70.6		0.216	0.216	2.8	2.4	7397

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 1F9N, N-terminal domain of AhrC, chain A	1	19.96	23686	2643	98.07	0.139	0.137	0.16	RANDOM	8.151

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]
0.21			-0.1		-0.12

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	48.789
r_dihedral_angle_4_deg	11.769
r_dihedral_angle_3_deg	10.581
r_sphericity_free	8.236
r_dihedral_angle_1_deg	5.892
r_scangle_it	3.527
r_sphericity_bonded	3.332
r_scbond_it	2.819
r_mcangle_it	2.37
r_mcbond_it	1.724
r_angle_refined_deg	1.595
r_rigid_bond_restr	1.305
r_angle_other_deg	0.863
r_mcbond_other	0.692
r_symmetry_vdw_other	0.344
r_nbd_refined	0.222
r_nbd_other	0.194
r_nbtor_refined	0.175
r_symmetry_vdw_refined	0.14
r_chiral_restr	0.11
r_symmetry_hbond_refined	0.106
r_xyhbond_nbd_refined	0.096
r_nbtor_other	0.09
r_bond_refined_d	0.016
r_gen_planes_refined	0.009
r_bond_other_d	0.007
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1013
Nucleic Acid Atoms
Solvent Atoms	87
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
ADSC	data collection
MOSFLM	data reduction
SCALA	data scaling
AMoRE	phasing