3F4X

Carbonic anhydrase inhibitors. Comparison of chlorthalidone and indapamide X-ray crystal structures in adducts with isozyme II: when three water molecules make the difference

X-RAY DIFFRACTION

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
2.08	41.01

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 41.39	α = 90
b = 42.14	β = 104.29
c = 72.26	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		2002-02-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	OXFORD DIFFRACTION ENHANCED 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	1.9	20	98	0.12	9.6	5.1		19134	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)
	1.9	2	97.6		0.3	2.03	3.3	1917

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	1CA2	1.9	20	18173	986	99.62	0.20175	0.19904	0.25203	RANDOM	12.172

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]
-0.03		0.03	0.16		-0.12

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.701
r_dihedral_angle_4_deg	19.809
r_dihedral_angle_3_deg	16.559
r_dihedral_angle_1_deg	6.482
r_scangle_it	2.285
r_scbond_it	1.45
r_angle_refined_deg	1.4
r_mcangle_it	0.968
r_mcbond_it	0.553
r_nbtor_refined	0.305

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.701
r_dihedral_angle_4_deg	19.809
r_dihedral_angle_3_deg	16.559
r_dihedral_angle_1_deg	6.482
r_scangle_it	2.285
r_scbond_it	1.45
r_angle_refined_deg	1.4
r_mcangle_it	0.968
r_mcbond_it	0.553
r_nbtor_refined	0.305
r_nbd_refined	0.202
r_symmetry_vdw_refined	0.178
r_symmetry_hbond_refined	0.154
r_xyhbond_nbd_refined	0.123
r_chiral_restr	0.111
r_metal_ion_refined	0.05
r_bond_refined_d	0.01
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2065
Nucleic Acid Atoms
Solvent Atoms	190
Heterogen Atoms	24

Software

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

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.