2P97

CRYSTAL STRUCTURE OF A PUTATIVE METAL-DEPENDENT HYDROLASE (AVA_3068) FROM ANABAENA VARIABILIS ATCC 29413 AT 1.65 A RESOLUTION

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		277	NANODROP, 15.8% PEG 3350, 0.186M Magnesium chloride, VAPOR DIFFUSION, SITTING DROP, temperature 277K
2	VAPOR DIFFUSION, SITTING DROP	5	293	NANODROP, 20.0% PEG 3350, 0.2M Magnesium nitrate, 0.1M MES pH 5.0, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 103.32	α = 90
b = 103.32	β = 90
c = 96.69	γ = 90

Symmetry
Space Group	P 42 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	MARMOSAIC 325 mm CCD	Flat collimating mirror, toroid focusing mirror	2007-02-15	M	SINGLE WAVELENGTH
2	2	x-ray	100	CCD	MARMOSAIC 325 mm CCD	Flat mirror (vertical focusing)	2007-02-11	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.97927	SSRL	BL9-2
2	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.97920, 0.91162, 0.97898	SSRL	BL11-1

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	1.65	29.488	96.4	0.052	14.57			63319			29.985

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)
1,2	1.65	1.71	88.7		0.626	2.3		10838

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Resolution (High)	Resolution (Low)	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	1.65	29.488	63263	3211	99.83	0.162	0.162	0.16	0.189	RANDOM	28.44

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]
-0.59			-0.59		1.17

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.703
r_dihedral_angle_4_deg	14.292
r_dihedral_angle_3_deg	10.771
r_scangle_it	5.862
r_scbond_it	4.654
r_dihedral_angle_1_deg	4.592
r_mcangle_it	2.331
r_mcbond_it	1.895
r_angle_refined_deg	1.664
r_angle_other_deg	0.947
r_mcbond_other	0.556
r_symmetry_vdw_other	0.273
r_symmetry_vdw_refined	0.24
r_symmetry_hbond_refined	0.218
r_nbd_refined	0.211
r_xyhbond_nbd_refined	0.198
r_nbd_other	0.178
r_nbtor_refined	0.173
r_chiral_restr	0.099
r_nbtor_other	0.083
r_xyhbond_nbd_other	0.066
r_metal_ion_refined	0.059
r_bond_refined_d	0.018
r_gen_planes_refined	0.006
r_gen_planes_other	0.003
r_bond_other_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	3127
Nucleic Acid Atoms
Solvent Atoms	517
Heterogen Atoms	3

Software

Software
Software Name	Purpose
MolProbity	model building
SHELX	phasing
REFMAC	refinement
XSCALE	data scaling
PDB_EXTRACT	data extraction
MAR345	data collection
XDS	data reduction
SHELXD	phasing
autoSHARP	phasing