1ZKP

1.5A Resolution Crystal Structure of a Metallo Beta Lactamase Family Protein, the ELAC Homolgue of Bacillus anthracis, a Putative Ribonuclease

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	5.6	298	0.2M Ammonoum Sulfate, 0.1M Sodium citrate tribasic dihydrate ph 5.6, 30% w/v PEG 4000 0.5M NaCl, ZnCl, VAPOR DIFFUSION, temperature 298K
2	VAPOR DIFFUSION	5.6	298	0.2M Ammonoum Sulfate, 0.1M Sodium citrate tribasic dihydrate ph 5.6, 30% w/v PEG 40000.5M NaCl, ZnCl , VAPOR DIFFUSION, temperature 298K

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 73.375	α = 90
b = 91.19	β = 115.31
c = 78.466	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	99.8	CCD	MAR CCD 165 mm	mirrors	2005-03-18	M	SINGLE WAVELENGTH
2	1	x-ray	100	CCD	MARMOSAIC 225 mm CCD	mirrors	2005-03-26	M	SINGLE WAVELENGTH
1,2	1

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 32-ID	0.9792	APS	32-ID
2	SYNCHROTRON	APS BEAMLINE 5ID-B	1.0	APS	5ID-B

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	1.5	25	88	0.065	13.05			148486		-3

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	1.5	1.57	77.7		0.207	5	8.86	29285

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	SAD	THROUGHOUT	1.502	25	135032	135032	7103	95.75	0.14902	0.14902	0.14736	0.18009	RANDOM	19.163

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]
0.43		0.21	-0.49		0.23

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.739
r_dihedral_angle_4_deg	21.182
r_dihedral_angle_3_deg	11.82
r_dihedral_angle_1_deg	6.256
r_scangle_it	4.697
r_scbond_it	3.089
r_mcangle_it	1.992
r_angle_refined_deg	1.251
r_mcbond_it	1.229
r_nbtor_refined	0.307
r_nbd_refined	0.196
r_symmetry_vdw_refined	0.163
r_xyhbond_nbd_refined	0.112
r_symmetry_hbond_refined	0.111
r_chiral_restr	0.083
r_metal_ion_refined	0.058
r_symmetry_metal_ion_refined	0.03
r_bond_refined_d	0.009
r_gen_planes_refined	0.005
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7741
Nucleic Acid Atoms
Solvent Atoms	1375
Heterogen Atoms	13

Software

Software
Software Name	Purpose
REFMAC	refinement
MAR345	data collection
SCALEPACK	data scaling
XDS	data scaling
PHENIX	phasing
SHARP	phasing
DM	phasing