1T75

Crystal structure of Escherichia coli beta carbonic anhydrase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.5	298	peg 3000, pH 4.5, VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.47	49.8

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 110.447	α = 90
b = 110.447	β = 90
c = 162.536	γ = 90

Symmetry
Space Group	P 43 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 4	Si(111)	2004-03-10	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 5.0.2	0.9792	ALS	5.0.2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym 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	2.5	48	89.1	0.14	0.14	18.6	15	32980	32980	1	1	38

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.5	2.64	88		0.68	0.68	2.44	11.6	4361

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	SAD	THROUGHOUT	2.5	91.29	32980	32980	1750	97.84	0.19841	0.19589	0.24569	RANDOM	34.92

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]
2.15			2.15		-4.31

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_1_deg	6.52
r_scangle_it	2.849
r_scbond_it	1.675
r_angle_refined_deg	1.388
r_mcangle_it	1.284
r_angle_other_deg	0.822
r_mcbond_it	0.685
r_symmetry_vdw_other	0.284
r_symmetry_vdw_refined	0.283
r_symmetry_hbond_refined	0.23
r_nbd_other	0.224
r_nbd_refined	0.22
r_xyhbond_nbd_refined	0.168
r_nbtor_other	0.087
r_metal_ion_refined	0.083
r_chiral_restr	0.075
r_bond_refined_d	0.015
r_gen_planes_refined	0.005
r_gen_planes_other	0.005
r_bond_other_d	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6860
Nucleic Acid Atoms
Solvent Atoms	194
Heterogen Atoms	4

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALEPACK	data scaling
PHENIX	phasing