6WKA

human carbonic anhydrase II bound to an inhibitor modified with azidothymidine

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		281	7.5 MG/ML PROTEIN WITH 2.7 M AMMONIUM SULFATE, 100 MM TRIS PH 8.5 AT 8 C

Crystal Properties
Matthews coefficient	Solvent content
2.09	41.06

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 42.198	α = 90
b = 41.521	β = 104.358
c = 72.018	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 210		2018-04-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	AUSTRALIAN SYNCHROTRON BEAMLINE MX1	0.95370	Australian Synchrotron	MX1

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	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	1.34	41.52	95	0.078	0.031	0.999	14.3	7.1		51588

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.34	1.36			0.472	0.208	0.848	2.9

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 (All)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	5flt	1.34	39.875	51570	2509	94.659	0.129	0.1267	0.1658	11.385

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]
-0.824		-0.092	0.271		0.53

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.674
r_dihedral_angle_4_deg	22.434
r_dihedral_angle_3_deg	12.253
r_dihedral_angle_1_deg	6.762
r_lrange_it	2.873
r_lrange_other	2.458
r_scangle_other	1.92
r_scangle_it	1.919
r_angle_refined_deg	1.636
r_mcangle_other	1.593
r_mcangle_it	1.586
r_scbond_it	1.537
r_scbond_other	1.537
r_angle_other_deg	1.482
r_rigid_bond_restr	1.175
r_mcbond_it	1.168
r_mcbond_other	1.157
r_symmetry_nbd_refined	0.317
r_nbd_refined	0.238
r_nbd_other	0.223
r_symmetry_xyhbond_nbd_refined	0.212
r_symmetry_nbd_other	0.2
r_xyhbond_nbd_refined	0.186
r_nbtor_refined	0.174
r_chiral_restr	0.091
r_symmetry_nbtor_other	0.081
r_metal_ion_refined	0.078
r_xyhbond_nbd_other	0.016
r_bond_refined_d	0.01
r_gen_planes_refined	0.008
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2049
Nucleic Acid Atoms
Solvent Atoms	338
Heterogen Atoms	34

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing