2RF7

Crystal structure of the escherichia coli nrfa mutant Q263E

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2RDZ	PDB ENTRY 2RDZ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	277	100 mM HEPES pH 7.5, 20 % PEG 10 K, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.8	56.03

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 82.292	α = 90
b = 91.201	β = 90
c = 295.486	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 315		2006-07-06	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID23-1	0.992	ESRF	ID23-1

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	2.04	147.743	97.1	0.096	0.096	3.6	3.7	137863	137863

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)
	2.04	2.15	92.9		0.327	0.327	0.9	3.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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 2RDZ	2.04	79.31	137768	130828	6940	96.83	0.17411	0.17131	0.22642	RANDOM	22.051

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]
0.04					-0.04

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.884
r_dihedral_angle_3_deg	15.325
r_dihedral_angle_4_deg	14.421
r_dihedral_angle_1_deg	5.905
r_scangle_it	3.485
r_scbond_it	2.41
r_angle_refined_deg	1.499
r_mcangle_it	1.342
r_mcbond_it	1.042
r_nbtor_refined	0.293
r_nbd_refined	0.209
r_symmetry_hbond_refined	0.201
r_symmetry_vdw_refined	0.177
r_xyhbond_nbd_refined	0.155
r_chiral_restr	0.1
r_metal_ion_refined	0.073
r_bond_refined_d	0.018
r_gen_planes_refined	0.009
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_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	13987
Nucleic Acid Atoms
Solvent Atoms	1782
Heterogen Atoms	928

Software

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