2ARK

Structure of a flavodoxin from Aquifex aeolicus

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	277	Na-HEPES, Na Citrate, glycerol, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.3	45

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 112.846	α = 90
b = 112.846	β = 90
c = 150.648	γ = 120

Symmetry
Space Group	P 32 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	105	CCD	CUSTOM-MADE	SBC3	2005-05-06	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-BM	0.97911, 0.97924	APS	19-BM

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	2.4	36	99.6			43827	43827

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.4	2.49	98.8		0.72	1.8	4.2

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	THROUGHOUT	2.4	36	43765	41563	2202	99.62	0.17396	0.17396	0.17079	0.23519	RANDOM	29.432

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]
1.79	0.9		1.79		-2.69

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.96
r_dihedral_angle_4_deg	20.942
r_dihedral_angle_3_deg	20.392
r_dihedral_angle_1_deg	6.99
r_scangle_it	3.631
r_scbond_it	2.706
r_angle_refined_deg	1.717
r_mcangle_it	1.249
r_mcbond_it	0.968
r_nbtor_refined	0.302
r_symmetry_hbond_refined	0.269
r_symmetry_vdw_refined	0.212
r_nbd_refined	0.208
r_xyhbond_nbd_refined	0.178
r_chiral_restr	0.137
r_bond_refined_d	0.019
r_gen_planes_refined	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8633
Nucleic Acid Atoms
Solvent Atoms	420
Heterogen Atoms	66

Software

Software
Software Name	Purpose
REFMAC	refinement
SBC-Collect	data collection
HKL-2000	data scaling
HKL-3000	phasing
SHELX	phasing
RESOLVE	phasing
DM	phasing
Coot	model building
O	model building
ARP/wARP	model building