2Q9U

Crystal structure of the flavodiiron protein from Giardia intestinalis

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	294	16% PEG 3350, 0.2 M potassium nitrate,0.1 M sodium acetate, pH 4.6, VAPOR DIFFUSION, HANGING DROP, temperature 294K

Crystal Properties
Matthews coefficient	Solvent content
2.34	47.34

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 111.967	α = 90
b = 115.059	β = 90
c = 67.732	γ = 90

Symmetry
Space Group	P 21 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	CCD	ADSC QUANTUM 315	toroidal mirror	2006-11-18	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ESRF BEAMLINE ID29	1.0	ESRF	ID29

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	1.9	80	98.3	0.087	9.4	7.3	70973	69601	0.015		17.7

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)
	1.9	1.97	92.3		0.43

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	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 1YCF	1.9	50	65166	3469	98.51	0.16664	0.16461	0.20409	RANDOM	17.233

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]
-0.67			-0.39		1.06

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.397
r_dihedral_angle_4_deg	18.385
r_dihedral_angle_3_deg	13.163
r_dihedral_angle_1_deg	6.092
r_scangle_it	3.148
r_scbond_it	2.11
r_angle_refined_deg	1.393
r_mcangle_it	1.218
r_mcbond_it	0.811
r_nbtor_refined	0.305
r_nbd_refined	0.196
r_symmetry_vdw_refined	0.185
r_symmetry_hbond_refined	0.146
r_xyhbond_nbd_refined	0.128
r_chiral_restr	0.101
r_metal_ion_refined	0.095
r_bond_refined_d	0.014
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6428
Nucleic Acid Atoms
Solvent Atoms	776
Heterogen Atoms	88

Software

Software
Software Name	Purpose
ADSC	data collection
MOLREP	phasing
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling