4CNX

Surface residue engineering of bovine carbonic anhydrase to an extreme halophilic enzyme for potential application in postcombustion CO2 capture

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	5.5	281	PROTEIN WAS AT 10 MG/ML. THE RESERVOIR CONDITIONS WERE: 40% PEG 600, 100 MM SODIUM CITRATE AT PH 5.5 SET UP AT 8C. CROSS SEEDING FROM OTHER MUTANT CA-II CRYSTALS WAS USED TO OBTAIN THESE CRYSTALS.

Crystal Properties
Matthews coefficient	Solvent content
2.06	40.4

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 41.591	α = 90
b = 67.937	β = 103.07
c = 43.134	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 CCD		2012-12-20	M	SINGLE WAVELENGTH

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

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	1.23	42	98.6	0.04	28.7	7.3		66095

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	1.23	1.3	95.2		0.32	6.2	7.2

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 3ML2	1.23	35.76	62737	3344	98.64	0.11244	0.11065	0.14683	RANDOM	11.268

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]
		-0.11	-0.11		0.13

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.518
r_sphericity_free	32.997
r_dihedral_angle_4_deg	15.981
r_dihedral_angle_3_deg	11.576
r_sphericity_bonded	10.691
r_dihedral_angle_1_deg	6.736
r_rigid_bond_restr	5.722
r_scangle_other	4.737
r_scbond_it	4.708
r_scbond_other	4.705
r_long_range_B_refined	4.602
r_long_range_B_other	4.601
r_angle_refined_deg	2.069
r_mcangle_other	2.066
r_mcangle_it	2.064
r_mcbond_it	1.57
r_mcbond_other	1.568
r_angle_other_deg	0.968
r_chiral_restr	0.14
r_bond_refined_d	0.021
r_gen_planes_refined	0.013
r_gen_planes_other	0.002
r_bond_other_d	0.001
r_nbd_refined
r_nbd_other
r_nbtor_refined
r_nbtor_other
r_xyhbond_nbd_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_vdw_refined
r_symmetry_vdw_other
r_symmetry_hbond_refined
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2043
Nucleic Acid Atoms
Solvent Atoms	405
Heterogen Atoms	8

Software

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