4KPU

Electron transferring flavoprotein of Acidaminococcus fermentans: Towards a mechanism of flavin-based electron bifurcation

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	277	18% PEG, 0.1M BIS-Tris propane, 0.1M Na formate, 1mM FAD, pH 7.5, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.77	55.62

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 80.18	α = 90
b = 84.89	β = 90
c = 106.73	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		PIXEL	PSI PILATUS 6M			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)	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	1.6	45	98				90032

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	1.6	45	90032	4761	98.08	0.16283	0.16136	0.19072	RANDOM	17.651

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]

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.313
r_dihedral_angle_4_deg	16.829
r_dihedral_angle_3_deg	13.671
r_dihedral_angle_1_deg	6.346
r_angle_refined_deg	2.291
r_angle_other_deg	0.976
r_chiral_restr	0.146
r_bond_refined_d	0.023
r_gen_planes_refined	0.015
r_gen_planes_other	0.002

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.313
r_dihedral_angle_4_deg	16.829
r_dihedral_angle_3_deg	13.671
r_dihedral_angle_1_deg	6.346
r_angle_refined_deg	2.291
r_angle_other_deg	0.976
r_chiral_restr	0.146
r_bond_refined_d	0.023
r_gen_planes_refined	0.015
r_gen_planes_other	0.002
r_bond_other_d	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4561
Nucleic Acid Atoms
Solvent Atoms	597
Heterogen Atoms	107

Software

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

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.