4CNR | pdb_00004cnr

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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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3ML2	PDB ENTRY 3ML2

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	5.5	281	10 MG/ML PROTEIN WITH 30% PEG 1500 AT 8C, pH 5.5

Crystal Properties
Matthews coefficient	Solvent content
2.14	42.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 45.294	α = 90
b = 141.114	β = 90.07
c = 77.188	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	2.2	47	97.9	0.14	12.9	7.5		48015

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	2.2	2.32	95.7		0.41	4.1	7.4

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 (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 3ML2	2.29	45.29	40495	2195	97.84	0.20177	0.19993	0.22	0.23594	0.26	RANDOM	20.047

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]
-14.33		-6.32	25.46		-11.12

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	33.451
r_dihedral_angle_3_deg	14.62
r_dihedral_angle_4_deg	11.865
r_dihedral_angle_1_deg	6.388
r_long_range_B_refined	4.577
r_long_range_B_other	4.566
r_scangle_other	3.364
r_mcangle_it	2.682
r_mcangle_other	2.682
r_scbond_it	2.101
r_scbond_other	2.101
r_mcbond_it	1.754
r_mcbond_other	1.752
r_angle_refined_deg	1.371
r_angle_other_deg	1.109
r_chiral_restr	0.082
r_bond_refined_d	0.01
r_gen_planes_refined	0.008
r_bond_other_d	0.006
r_gen_planes_other	0.005
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
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8182
Nucleic Acid Atoms
Solvent Atoms	297
Heterogen Atoms	4

Software

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