5JDV

Human carbonic anhydrase II (F131W) complexed with benzo[d]thiazole-2-sulfonamide

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3S73

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP		277.15	We soaked these crystals with BTA and TA by carrying out the following steps: (i) We prepared soaking solutions containing 1.32 M sodium citrate, 1 mM ZnSO4, 100 mM Tris-HCl (pH 7.8), and 5 mM ligand. (ii) We combined 4 uL of soaking solution and 1-2 crystals of HCAII within a drop on the surface of a reservoir cover (EasyXtal CrystalSupport, Qiagen). (iii) To a clear plastic reservoir in a 15-reservoir plate (EasyXtal, Qiagen), we added 1 mL of soaking solution (without ligand present). We attached the reservoir cover to the reservoir and left the entire setup at 4 deg C for 1 week.

Crystal Properties
Matthews coefficient	Solvent content
2.12	41.85

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.34	α = 90
b = 41.68	β = 104.67
c = 72.78	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	ADSC QUANTUM 315r		2015-04-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	ALS BEAMLINE 8.2.1	1.1	ALS	8.2.1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.34	35.22	86.02	16.7	3.9		93081

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	3S73	1.34	35.204	1.34	93081	3763	86.02	0.1378	0.1364	0.1694

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]

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	13.073
f_angle_d	1.349
f_chiral_restr	0.084
f_bond_d	0.011
f_plane_restr	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2075
Nucleic Acid Atoms
Solvent Atoms	438
Heterogen Atoms

Software

Software
Software Name	Purpose
PHENIX	refinement
xia2	data reduction
xia2	data scaling
PHASER	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), 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.