8RJA

Crystal structure of the F420-reducing formylmethanofuran dehydrogenase complex from the ethanotroph Candidatus Ethanoperedens thermophilum

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	5T5M

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	293.15	Crystals were obtained by initial screening at 20 degrees Celsius using the sitting drop method on a 96-Well MRC 2-Drop Crystallization Plates in polystyrene (SWISSCI). The crystallization reservoir contained 90 ul of mother liquor, the crystallization drop contained a mixture of 0.6 ul protein at 4.64 mg.ml-1 and 0.6 ul precipitant. The protein was in 25 mM Tris/HCl buffer pH 7.6, 10 % (v/v) glycerol, 2 mM DTT, 1 mM FAD and 1 mM FMN. The crystal was obtained in a Coy tent under an N2/H2 atmosphere (96:4 %). The crystallization reservoir contained 200 mM sodium acetate trihydrate, 100 mM sodium cacodylate, pH 6.5, and 18 % (w/v) polyethylene glycol 8,000. The crystal was soaked in the crystallization solution supplemented with 30 % (v/v) glycerol before freezing in liquid nitrogen.

Crystal Properties
Matthews coefficient	Solvent content
2.97	58.67

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 107.627	α = 90
b = 135.636	β = 90.49
c = 149.902	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	PIXEL	DECTRIS PILATUS 2M-F		2020-03-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06DA	1.00000	SLS	X06DA

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	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	1.97	57.38	93	0.251	0.271	0.101	0.989	7.2	7		167948

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.973	2.187	64.3		1.2	1.296	0.486	0.621	1.6	6.9

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	1.97	57.38	1.34	167913	8349	55.67	0.1774	0.1757	0.21	25.29

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
f_dihedral_angle_d	14.78
f_angle_d	1.339
f_chiral_restr	0.087
f_bond_d	0.01
f_plane_restr	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	27648
Nucleic Acid Atoms
Solvent Atoms	2282
Heterogen Atoms	581

Software

Software
Software Name	Purpose
PHENIX	refinement
autoPROC	data reduction
autoPROC	data scaling
PHENIX	phasing

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 R01GM157729.