2OHJ

Crystal Structure of coenzyme F420H2 oxidase (FprA), a diiron flavoprotein, inactive oxidized state

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	283	0.001M DDT, 0.2M ammonium sulfate, 0.1M MES/KOH, 30% PEG MME 5000, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 283K

Crystal Properties
Matthews coefficient	Solvent content
2.45	49.72

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 88.7	α = 90
b = 88.7	β = 90
c = 450.4	γ = 90

Symmetry
Space Group	P 43 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	MARMOSAIC 225 mm CCD	mirrors	2006-10-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X10SA		SLS	X10SA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	2.26	48.11	97.2	6.3	16.7	4.5	80298	80298

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.26	2.32	74		7.1	2.4

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	FprA	2.26	48.11	80298	80298	4222	99	0.18844	0.18844	0.1861	0.23381	RANDOM	24.862

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]
0.07			0.07		-0.13

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.848
r_dihedral_angle_4_deg	17.433
r_dihedral_angle_3_deg	15.922
r_dihedral_angle_1_deg	6.172
r_scangle_it	2.412
r_scbond_it	1.503
r_angle_refined_deg	1.299
r_mcangle_it	0.926
r_mcbond_it	0.533
r_nbtor_refined	0.302
r_symmetry_vdw_refined	0.233
r_nbd_refined	0.197
r_xyhbond_nbd_refined	0.155
r_symmetry_metal_ion_refined	0.135
r_symmetry_hbond_refined	0.11
r_metal_ion_refined	0.098
r_chiral_restr	0.09
r_bond_refined_d	0.011
r_gen_planes_refined	0.004
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_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	12648
Nucleic Acid Atoms
Solvent Atoms	499
Heterogen Atoms	143

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data collection
XDS	data reduction
XDS	data scaling
EPMR	phasing