3HLJ

Crystal structure of human carbonic anhydrase isozyme II with 3-methylthiobenzimidazo[1,2-c][1,2,3]thiadiazol-7-sulfonamide

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2NNS	PDB ENTRY 2NNS

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7	298	Crystallization buffer was 0.1M sodium BICINE, pH9.0, 0.2M ammonium sulfate and 2M sodium malonate, pH7.0 made from 1M sodium BICINE and 3.4M sodium malonate, VAPOR DIFFUSION, SITTING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.1	40.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.14	α = 90
b = 40.927	β = 104.23
c = 72.036	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	MAR scanner 345 mm plate	mirrors	2007-09-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7B	0.84230	EMBL/DESY, HAMBURG	BW7B

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	1.438	24.456	97	0.056	0.056	7.015	4.1	42194	42194			14

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)
	1.44	1.52	89.3		0.431	0.431	1.7	4	5634

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 2NNS	1.44	23.81	42193	42193	4248	97.63	0.178	0.178	0.175	0.206	RANDOM	16.481

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]
0.39		-0.37	-0.35		-0.23

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.178
r_dihedral_angle_4_deg	21.849
r_dihedral_angle_3_deg	12.26
r_dihedral_angle_1_deg	6.219
r_sphericity_free	3.882
r_sphericity_bonded	3.114
r_scangle_it	2.796
r_scbond_it	1.986
r_rigid_bond_restr	1.412
r_mcangle_it	1.372
r_angle_refined_deg	1.245
r_mcbond_it	0.832
r_nbtor_refined	0.305
r_symmetry_hbond_refined	0.207
r_nbd_refined	0.19
r_xyhbond_nbd_refined	0.16
r_symmetry_vdw_refined	0.16
r_chiral_restr	0.087
r_metal_ion_refined	0.068
r_bond_refined_d	0.009
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2049
Nucleic Acid Atoms
Solvent Atoms	219
Heterogen Atoms	28

Software

Software
Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
SCALA	data scaling
PDB_EXTRACT	data extraction