3B1B

The unique structure of wild type carbonic anhydrase alpha-CA1 from Chlamydomonas reinhardtii

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	8.5	298	1.0-2.0M Ammonium sulfate, 100mM Tris-HCl (pH8.5), VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.75	67.21

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 134.3	α = 90
b = 134.3	β = 90
c = 120.1	γ = 120

Symmetry
Space Group	P 65

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		2005-06-27	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	PHOTON FACTORY BEAMLINE AR-NW12A	1.00, 1.28254, 1.28297	Photon Factory	AR-NW12A

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	1.88	50	99.9	0.082	60	10.6		99548

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	1.88	1.95	100		0.314	8.7	10	9936

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	MAD	THROUGHOUT	1.88	41.3	94307	4965	99.74	0.18886	0.18736	0.1867	0.21757	0.2172	RANDOM	29.288

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]
1.12	0.56		1.12		-1.68

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	36.364
r_dihedral_angle_4_deg	22.302
r_dihedral_angle_3_deg	13.812
r_dihedral_angle_1_deg	6.535
r_scangle_it	3.667
r_scbond_it	2.396
r_mcangle_it	1.66
r_angle_refined_deg	1.546
r_mcbond_it	0.988
r_nbtor_refined	0.307
r_nbd_refined	0.204
r_symmetry_hbond_refined	0.174
r_metal_ion_refined	0.164
r_xyhbond_nbd_refined	0.161
r_symmetry_vdw_refined	0.161
r_chiral_restr	0.114
r_bond_refined_d	0.015
r_gen_planes_refined	0.007
r_bond_other_d
r_angle_other_deg
r_gen_planes_other
r_nbd_other
r_nbtor_other
r_xyhbond_nbd_other
r_metal_ion_other
r_symmetry_vdw_other
r_symmetry_hbond_other
r_symmetry_metal_ion_refined
r_symmetry_metal_ion_other
r_mcbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4859
Nucleic Acid Atoms
Solvent Atoms	888
Heterogen Atoms	87

Software

Software
Software Name	Purpose
HKL-2000	data collection
SHARP	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling