3S76

The origin of the hydrophobic effect in the molecular recognition of arylsulfonamides by carbonic anhydrase

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	7.8	277	100 mM Tris-Cl, 1.15 M sodium citrate, pH 7.8, vapor diffusion, temperature 277K, VAPOR DIFFUSION

Crystal Properties
Matthews coefficient	Solvent content
2.13	42.18

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.295	α = 90
b = 41.438	β = 104.66
c = 72.6	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 Q315			M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X25	1.100	NSLS	X25

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	1.6	50	98.6	0.049	19.2	6.8		31878

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.6	1.63	90.4		0.358		4.7	1428

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	1.6	35.12	31862	1616	98.64	0.1592	0.1573	0.1931	RANDOM	14.943

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
r_dihedral_angle_2_deg	34.947
r_dihedral_angle_4_deg	24.875
r_dihedral_angle_3_deg	12.869
r_dihedral_angle_1_deg	6.909
r_scangle_it	4.989
r_scbond_it	3.23
r_mcangle_it	2.324
r_angle_refined_deg	2.299
r_mcbond_it	1.448
r_chiral_restr	0.179

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.947
r_dihedral_angle_4_deg	24.875
r_dihedral_angle_3_deg	12.869
r_dihedral_angle_1_deg	6.909
r_scangle_it	4.989
r_scbond_it	3.23
r_mcangle_it	2.324
r_angle_refined_deg	2.299
r_mcbond_it	1.448
r_chiral_restr	0.179
r_bond_refined_d	0.027
r_gen_planes_refined	0.014

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2039
Nucleic Acid Atoms
Solvent Atoms	304
Heterogen Atoms	14

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction

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 R01GM157729.