1BLU

STRUCTURE OF THE 2[4FE-4S] FERREDOXIN FROM CHROMATIUM VINOSUM

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		6.5		CRYSTALS WERE GROWN AT ROOM TEMPERATURE IN 0.1M TRIS-MALEATE BUFFER, PH 6.5 CONTAINING 2.9 M AMMONIUM SULPHATE AND 0.1 M NACL

Crystal Properties
Matthews coefficient	Solvent content
3.32	63

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52	α = 90
b = 52	β = 90
c = 77.2	γ = 120

Symmetry
Space Group	P 31 2 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray		IMAGE PLATE	MARRESEARCH		1993-10-19	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE X11		EMBL/DESY, HAMBURG	X11

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	2.1	20	97	0.081		5		7178

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MR	1FDX	2.1	20	7178		97

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
p_staggered_tor	19.6
p_transverse_tor	12
p_scangle_it	9.5
p_scbond_it	5.9
p_mcangle_it	5.2
p_mcbond_it	3.4
p_planar_tor	3
p_multtor_nbd	0.272
p_xyhbond_nbd	0.212
p_chiral_restr	0.211
p_singtor_nbd	0.21
p_planar_d	0.05
p_angle_d	0.043
p_bond_d	0.021
p_plane_restr	0.016
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	612
Nucleic Acid Atoms
Solvent Atoms	85
Heterogen Atoms	16

Software

Software
Software Name	Purpose
AMoRE	phasing
PROLSQ	refinement
DENZO	data reduction
SCALEPACK	data scaling