3HKU

Human carbonic anhydrase II in complex with topiramate

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	9.5	289	2.6M (NH4)2SO4, pH 9.5, VAPOR DIFFUSION, HANGING DROP, temperature 289K

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.264	α = 90
b = 41.426	β = 104.59
c = 72.44	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	100	IMAGE PLATE	RIGAKU RAXIS IV++	VariMax	2008-12-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU MICROMAX-007 HF	1.5418

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	1.8	70.2	99.6	0.033		3.3		21463			13.634

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)
	1.8	1.848	96.1		0.058		3.2

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 (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1.8	70.19	21463	1156	99.64	0.15488	0.1525	0.19801	RANDOM	13.831

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]
0.06		0.14	0.04		-0.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.007
r_dihedral_angle_4_deg	20.609
r_dihedral_angle_3_deg	13.298
r_dihedral_angle_1_deg	6.441
r_scangle_it	3.394
r_scbond_it	2.21
r_angle_refined_deg	1.368
r_mcangle_it	1.335
r_mcbond_it	0.802
r_nbtor_refined	0.307
r_symmetry_hbond_refined	0.204
r_nbd_refined	0.201
r_symmetry_vdw_refined	0.185
r_xyhbond_nbd_refined	0.149
r_chiral_restr	0.096
r_metal_ion_refined	0.079
r_bond_refined_d	0.013
r_gen_planes_refined	0.006
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_refined
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	2049
Nucleic Acid Atoms
Solvent Atoms	354
Heterogen Atoms	23

Software

Software
Software Name	Purpose
StructureStudio	data collection
AMoRE	phasing
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling