3NJ9

Crystal structure of carbonic anhydrase II in complex with a Nir inhibitor

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.8	277	100mM Tris.HCl pH 7.7-7.8, 2mM sodium 4-(hydroxymercury)benzoate, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.09	41.19

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.07	α = 90
b = 41.54	β = 104.45
c = 72.39	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		2009-02-02	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SEALED TUBE	OXFORD DIFFRACTION ENHANCE ULTRA	1.54

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	2	10.55	94.5	0.11	12.9	3		31515	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	2	2.07	71.1		0.47	2.1	2.1	3156

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	PDB ENTRY 1CA2	2	10.55	15640	822	99.75	0.20236	0.19953	0.25725	RANDOM	15.861

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	35.829
r_dihedral_angle_4_deg	20.058
r_dihedral_angle_3_deg	17.329
r_dihedral_angle_1_deg	6.22
r_scangle_it	2.218
r_angle_refined_deg	1.516
r_scbond_it	1.374
r_mcangle_it	1.021
r_mcbond_it	0.597
r_nbtor_refined	0.306
r_xyhbond_nbd_refined	0.249
r_symmetry_hbond_refined	0.232
r_nbd_refined	0.222
r_symmetry_vdw_refined	0.198
r_chiral_restr	0.094
r_metal_ion_refined	0.083
r_bond_refined_d	0.011
r_gen_planes_refined	0.005

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2048
Nucleic Acid Atoms
Solvent Atoms	167
Heterogen Atoms	58

Software

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