3E2A | pdb_00003e2a

H. influenzae beta-carbonic anhydrase, variant Y181F with 100 mM bicarbonate

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2A8D	PDB ENTRY 2A8D

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7.5	295	0.1 M Hepes, 1.5 M ammonium sulfate, 4% PEG 4000, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.83	56.49

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 230.606	α = 90
b = 145.512	β = 93.78
c = 53.234	γ = 90

Symmetry
Space Group	C 1 2 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	IMAGE PLATE	RIGAKU RAXIS IV		2003-04-13	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RU200	1.5418

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	2.301	25	100	0.065	18.8	3.53		77406

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	2.301	2.38	99.9		0.343	3.6	3.4	7649

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	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 2A8D	2.301	24.78	77404	77404	7808	100	0.205	0.205	0.201	0.21	0.244	0.25	RANDOM	44.228

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]
0.12		-0.03	0.02		-0.14

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.527
r_dihedral_angle_4_deg	19.481
r_dihedral_angle_3_deg	16.031
r_dihedral_angle_1_deg	5.921
r_scangle_it	2.047
r_scbond_it	1.481
r_angle_refined_deg	1.233
r_mcangle_it	0.921
r_angle_other_deg	0.886
r_mcbond_it	0.751
r_symmetry_hbond_refined	0.341
r_nbd_refined	0.22
r_nbd_other	0.189
r_symmetry_vdw_refined	0.177
r_nbtor_refined	0.174
r_xyhbond_nbd_refined	0.165
r_symmetry_vdw_other	0.164
r_mcbond_other	0.11
r_nbtor_other	0.088
r_chiral_restr	0.073
r_xyhbond_nbd_other	0.063
r_bond_refined_d	0.011
r_gen_planes_refined	0.004
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9906
Nucleic Acid Atoms
Solvent Atoms	158
Heterogen Atoms	70

Software

Software
Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
EPMR	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction