3BL0

Carbonic anhydrase inhibitors. Interaction of 2-N,N-Dimethylamino-1,3,4-thiadiazole-5-methanesulfonamide with twelve mammalian isoforms: kinetic and X-Ray crystallographic studies

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.7	277	Tris.HCl pH 7.7-7.8 , sodium 4-(hydroxymercury)benzoate , VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.35

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 41.55	α = 90
b = 42.13	β = 104.25
c = 72.41	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	CCD	OXFORD SAPPHIRE CCD		2007-09-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SEALED TUBE	OXFORD DIFFRACTION ENHANCE ULTRA	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.84	20	99.8	0.17		4.7		21015	2

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.84	1.99	99.6		0.33

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	1.9	20	18292	982	99.62	0.20144	0.19896	0.24858	RANDOM	14.601

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]
-0.07		0.05	0.21		-0.11

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.728
r_dihedral_angle_4_deg	19.778
r_dihedral_angle_3_deg	16.446
r_dihedral_angle_1_deg	5.973
r_scangle_it	2.158
r_scbond_it	1.428
r_angle_refined_deg	1.36
r_mcangle_it	0.924
r_mcbond_it	0.546
r_nbtor_refined	0.305
r_nbd_refined	0.198
r_symmetry_vdw_refined	0.182
r_symmetry_hbond_refined	0.172
r_xyhbond_nbd_refined	0.146
r_metal_ion_refined	0.103
r_chiral_restr	0.087
r_bond_refined_d	0.009
r_gen_planes_refined	0.004
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	2061
Nucleic Acid Atoms
Solvent Atoms	189
Heterogen Atoms	24

Software

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