3ESZ

K2AK3A Flavodoxin from Anabaena

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	293	32% PEG 4000, 0.2-0.3M magnesium chloride, 0.1M Tris/HCl pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
1.95	36.78

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 58.667	α = 90
b = 65.697	β = 90
c = 75.643	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	CCD	ADSC QUANTUM 210		2008-06-29	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE BM16	0.97918	ESRF	BM16

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	1.94	43.84	98.1	0.057		6	21900	20353		2

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	1.94	2.01	95.4		0.115		5.6

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 1FLV	1.94	19.8	21900	20353	1490	97.68	0.15387	0.15069	0.19561	RANDOM	15.479

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]
-0.57			-0.45		1.02

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	5.982
r_scangle_it	2.594
r_scbond_it	1.62
r_angle_refined_deg	1.126
r_mcangle_it	1.05
r_angle_other_deg	0.762
r_mcbond_it	0.549
r_symmetry_vdw_other	0.264
r_nbd_other	0.234
r_nbd_refined	0.187
r_xyhbond_nbd_refined	0.16
r_symmetry_hbond_refined	0.15
r_symmetry_vdw_refined	0.108
r_nbtor_other	0.082
r_chiral_restr	0.068
r_metal_ion_refined	0.042
r_bond_refined_d	0.008
r_gen_planes_refined	0.004
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2641
Nucleic Acid Atoms
Solvent Atoms	371
Heterogen Atoms	71

Software

Software
Software Name	Purpose
HKL-2000	data collection
CNS	refinement
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing