3E2W | pdb_00003e2w

H. influenzae beta-carbonic anhydrase, variant Y181F with 1M bicarbonate

X-RAY DIFFRACTION

---

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, crystals soaked in this solution plus 30% glycerol and 1 M sodium bicarbonate, pH 7.5, VAPOR DIFFUSION, HANGING DROP, temperature 295K

Crystal Properties
Matthews coefficient	Solvent content
3.08	60.01

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 250.141	α = 90
b = 145.225	β = 93.78
c = 53.499	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		2003-04-21	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	2.296	26.2	99.4	0.061	13.78	2.8		77677

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	2.296	2.38	99.2		0.37	2.73	2.7	7731

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	2.296	26.2	77675	77675	3911	91.47	0.207	0.207	0.205	0.21	0.242	0.24	RANDOM	67.431

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]
-0.35		0.17	0.06		0.32

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.364
r_dihedral_angle_4_deg	18.302
r_dihedral_angle_3_deg	16.192
r_dihedral_angle_1_deg	5.548
r_scangle_it	1.76
r_angle_refined_deg	1.316
r_scbond_it	1.227
r_angle_other_deg	0.962
r_mcangle_it	0.765
r_mcbond_it	0.627
r_symmetry_hbond_refined	0.224
r_nbd_refined	0.199
r_symmetry_vdw_other	0.195
r_nbd_other	0.176
r_nbtor_refined	0.164
r_xyhbond_nbd_refined	0.151
r_symmetry_vdw_refined	0.132
r_mcbond_other	0.09
r_nbtor_other	0.084
r_chiral_restr	0.073
r_xyhbond_nbd_other	0.034
r_bond_refined_d	0.013
r_gen_planes_refined	0.003
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9750
Nucleic Acid Atoms
Solvent Atoms	257
Heterogen Atoms	70

Software

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