1FDO

OXIDIZED FORM OF FORMATE DEHYDROGENASE H FROM E. COLI

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	vapor diffusion - hanging drop in anaerobic atmosphere	7.5		FDH-H WAS CRYSTALLIZED BY HANGING DROP VAPOR DIFFUSION IN AN ANAEROBIC ATMOSPHERE IN THE PRESENCE OF 1.5 M AMMONIUM SULFATE, 1% PEG 400, 20 MM SODIUM FORMATE AND 100 MM HEPES/NAOH AT PH 7.5. PRIOR TO FREEZING IN LIQUID NITROGEN, CRYSTALS WERE OXIDIZED BY SOAKING IN 10 MM BENZYL VIOLOGEN FOR 30 MINUTES., vapor diffusion - hanging drop in anaerobic atmosphere

Crystal Properties
Matthews coefficient	Solvent content
2.7	55

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 146.6	α = 90
b = 146.6	β = 90
c = 81.1	γ = 90

Symmetry
Space Group	P 41 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	93	IMAGE PLATE	RIGAKU RAXIS	MIRRORS	1995-10-26	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH2R

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	2.8	50	93.4	0.079	22.1	4		20861		1

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.8	2.9	91.4		0.2	8.4

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	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	DIFFERENCE FOURIER ANALYSIS USING PHASES FROM THE STRUCTURE OF REDUCED FDH-H (PDB ENTRY 1AA6)	THROUGHOUT	2.8	6	2	18013	849	90	0.192	0.192	0.281	RANDOM	23.5

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
x_dihedral_angle_d	24.7
x_angle_deg	1.85
x_improper_angle_d	1.54
x_bond_d	0.013
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5575
Nucleic Acid Atoms
Solvent Atoms	64
Heterogen Atoms	103

Software

Software
Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing