6FJJ

Joint neutron and x-ray crystal structure of human carbonic anhydrase IX mimic (saccharin).

X-RAY DIFFRACTION - NEUTRON DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	293	1.2 M sodium citrate, 100 mM Tris pH 8.5

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.75

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.53	α = 90
b = 41.83	β = 104.04
c = 72.7	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	neutron	293	IMAGE PLATE	MAATEL BIODIFF		2015-11-19	M	SINGLE WAVELENGTH
2	1	x-ray	293	CCD	MAR CCD 130 mm		2015-08-15	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	NUCLEAR REACTOR	FRM II BEAMLINE BIODIFF	2.67	FRM II	BIODIFF
2	SYNCHROTRON	MAX II BEAMLINE I911-3	1.00	MAX II	I911-3

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	R Split (All)	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	2	50	92.2	0.22						3.7	2.2		15763
2	1.2	35	95.7							13.4	2.9		74523

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	R Merge I (Observed)	R-Sym I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	R Split (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2	2.07		0.645
2	1.2	1.23

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (I)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	1.5	25.593		1.36		38579	3517	96.54		0.1374	0.1345	0.1657
NEUTRON DIFFRACTION	MOLECULAR REPLACEMENT	2	26.961				15682	1559	92.27		0.2073	0.2048	0.2305

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	19.922
f_dihedral_angle_d	19.922
f_angle_d	1.302
f_angle_d	1.302
f_chiral_restr	0.08
f_chiral_restr	0.08
f_bond_d	0.012
f_bond_d	0.012
f_plane_restr	0.007
f_plane_restr	0.007

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2052
Nucleic Acid Atoms
Solvent Atoms	194
Heterogen Atoms	13

Software

Software
Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	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.