3E3I

H. influenzae beta-carbonic anhydrase, variant G41A 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, 1.8 M ammonium sulfate, 4% PEG 400, 100 mM sodium bicarbonate, 12 mg/mL protein, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
2.75	55.22

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 229.593	α = 90
b = 144.437	β = 94.43
c = 104.891	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	CCD	ADSC QUANTUM 210		2007-04-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	CHESS BEAMLINE F2	0.980	CHESS	F2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (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	122.169	89.6	0.055	0.055	19.1	4.8		205440

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2	2.11	55.6		0.475	0.475	1.9	3.1	18560

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	PDB ENTRY 2A8D	2	29.75	205402	205402	10347	89.59	0.203	0.203	0.201	0.236	RANDOM	36.165

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]
-0.06		0.04	0.04		0.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.853
r_dihedral_angle_4_deg	17.163
r_dihedral_angle_3_deg	15.298
r_dihedral_angle_1_deg	5.542
r_scangle_it	2.307
r_scbond_it	1.598
r_angle_refined_deg	1.192
r_mcangle_it	0.941
r_angle_other_deg	0.856
r_mcbond_it	0.782
r_symmetry_vdw_other	0.248
r_nbd_refined	0.213
r_symmetry_hbond_refined	0.205
r_nbd_other	0.189
r_symmetry_vdw_refined	0.185
r_nbtor_refined	0.177
r_xyhbond_nbd_refined	0.149
r_mcbond_other	0.134
r_nbtor_other	0.087
r_xyhbond_nbd_other	0.083
r_chiral_restr	0.071
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	20197
Nucleic Acid Atoms
Solvent Atoms	604
Heterogen Atoms	121

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction