2QA2

Crystal structure of CabE, an aromatic hydroxylase from angucycline biosynthesis, determined to 2.7 A resolution

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	293	20 % PEG 3350, 0.1M bis-tris propane, 0.2M Na/K-phosphate, pH 6.5, VAPOR DIFFUSION, HANGING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
3.98	69.06

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 133.1	α = 90
b = 133.1	β = 90
c = 166.8	γ = 120

Symmetry
Space Group	P 65 2 2

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	MAR CCD 165 mm		2006-02-24	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	EMBL/DESY, HAMBURG BEAMLINE BW7B		EMBL/DESY, HAMBURG	BW7B

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	2.7	30	99.1	0.097	0.097	16.22	6.8	24379	24379			50.7

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	2.7	2.8	99.9		0.518	0.518	4	6.9	2467

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	2QA1	2.7	29.83	23190	23190	1220	99.4	0.23633	0.23633	0.23428	0.27428	RANDOM	72.281

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]
-2.71	-1.35		-2.71		4.06

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.661
r_dihedral_angle_3_deg	20.136
r_dihedral_angle_4_deg	18.525
r_dihedral_angle_1_deg	6.596
r_scangle_it	1.607
r_angle_refined_deg	1.403
r_mcangle_it	1.321
r_scbond_it	1.034
r_mcbond_it	0.768
r_nbtor_refined	0.313
r_symmetry_vdw_refined	0.238
r_nbd_refined	0.232
r_xyhbond_nbd_refined	0.167
r_symmetry_hbond_refined	0.155
r_chiral_restr	0.09
r_bond_refined_d	0.012
r_gen_planes_refined	0.004
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_refined
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	3675
Nucleic Acid Atoms
Solvent Atoms	24
Heterogen Atoms	53

Software

Software
Software Name	Purpose
MOLREP	phasing
REFMAC	refinement
XDS	data reduction
XSCALE	data scaling