6SKT

Crystal structure of bovine carbonic anhydrase II in complex with a benzenesulfonamide-based ligand (SH0)

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.5	291	100mM HEPES pH7.5, 14% PEG3350, 20% Glycerol, 5mM CuCl2

Crystal Properties
Matthews coefficient	Solvent content
2.82	56.31

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 67.619	α = 90
b = 67.619	β = 90
c = 123.429	γ = 120

Symmetry
Space Group	P 32 2 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	PIXEL	DECTRIS PILATUS 6M-F	Double crystal monochromator	2017-09-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PETRA III, DESY BEAMLINE P11	1.033	PETRA III, DESY	P11

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	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	42.4	99.9	0.05175	0.05318	0.01206	0.999	35.99	19.6		26439			33.93

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.9	1.96	99.81		0.2529	0.2595	0.05758	0.994	8.65	20.1

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	1V9E	1.9	42.4	25192	1333	99.88	0.1784	0.1771	0.2043	RANDOM	38.411

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]
0.91	0.46		0.91		-2.97

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.074
r_dihedral_angle_4_deg	18.207
r_dihedral_angle_3_deg	13.709
r_dihedral_angle_1_deg	6.913
r_angle_refined_deg	1.502
r_angle_other_deg	0.946
r_chiral_restr	0.089
r_bond_refined_d	0.012
r_gen_planes_refined	0.007
r_bond_other_d	0.002

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.074
r_dihedral_angle_4_deg	18.207
r_dihedral_angle_3_deg	13.709
r_dihedral_angle_1_deg	6.913
r_angle_refined_deg	1.502
r_angle_other_deg	0.946
r_chiral_restr	0.089
r_bond_refined_d	0.012
r_gen_planes_refined	0.007
r_bond_other_d	0.002
r_gen_planes_other	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2048
Nucleic Acid Atoms
Solvent Atoms	175
Heterogen Atoms	29

Software

Software
Software Name	Purpose
Aimless	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
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.