1HLQ

CRYSTAL STRUCTURE OF RHODOFERAX FERMENTANS HIGH POTENTIAL IRON-SULFUR PROTEIN REFINED TO 1.45 A

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8	290	HiPIP (20mg/ml, 20mM Tris pH 8, 2mM Beta-mercaptoethanol, 3.2M (NH4)2SO4 in 100mM Tris buffer, VAPOR DIFFUSION, HANGING DROP, temperature 290K

Crystal Properties
Matthews coefficient	Solvent content
2.11	41

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 88.312	α = 90
b = 88.312	β = 90
c = 61.34	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	IMAGE PLATE	MARRESEARCH	mirrors	1997-04-23	M	SINGLE WAVELENGTH
2	1	x-ray	100	IMAGE PLATE	MARRESEARCH	mirrors	1997-06-09	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7B	1.105	EMBL/DESY, HAMBURG	BW7B
2	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7A	1.738, 1.742, 0.995	EMBL/DESY, HAMBURG	BW7A

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	1.45	22.09	99	0.047	6.9	5.6	42975	42975			17.254

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)
	1.45	1.53	95.4		0.412	0.6	3.8	5912

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	MAD	FREE R-VALUE	1.45	22	42733	42733	2151	99.6	0.186	0.186	0.187	0.218	random

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_transverse_tor	15.8
p_staggered_tor	13.9
p_plane_restr	8.4
p_planar_tor	8.4
p_scangle_it	2.079
p_mcangle_it	1.908
p_scbond_it	1.508
p_mcbond_it	1.311
p_multtor_nbd	0.259
p_singtor_nbd	0.157
p_xyhbond_nbd	0.124
p_chiral_restr	0.098
p_planar_d	0.068
p_angle_d	0.026
p_bond_d	0.008
p_xhyhbond_nbd
p_hb_or_metal_coord
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1688
Nucleic Acid Atoms
Solvent Atoms	281
Heterogen Atoms	54

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
SHARP	phasing
REFMAC	refinement
CCP4	data scaling