3F9S

Crystal structure of a putative polyketide cyclase (lferr_0659) from acidithiobacillus ferrooxidans atcc at 1.76 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	5.6	277	5.0000% Glycerol, 19.0000% iso-Propanol, 19.0000% PEG-4000, 0.1M Citrate pH 5.6, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.3

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.97	α = 90
b = 48.594	β = 94.19
c = 55.967	γ = 90

Symmetry
Space Group	P 1 21 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	MARMOSAIC 300 mm CCD	Adjustable focusing mirrors in K-B geometry	2008-10-12	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 23-ID-B	0.94645,0.97967	APS	23-ID-B

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	1.76	30.429	99.1	0.117	0.117	4.323	7		26997			18.647

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	1.73	1.77	97.6		0.441	0.441	1.7	3.6	1973

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.76	30.429	26993	1358	98.97	0.172	0.17	0.208	RANDOM	29.434

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]
0.11		-0.63	0.95		-1.16

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.885
r_dihedral_angle_4_deg	13.817
r_dihedral_angle_3_deg	9.963
r_scangle_it	4.384
r_dihedral_angle_1_deg	4.325
r_scbond_it	3.233
r_mcangle_it	1.941
r_angle_refined_deg	1.793
r_mcbond_it	1.388
r_angle_other_deg	1.354
r_mcbond_other	0.237
r_symmetry_vdw_other	0.21
r_nbd_refined	0.191
r_nbtor_refined	0.176
r_nbd_other	0.164
r_xyhbond_nbd_refined	0.115
r_symmetry_hbond_refined	0.105
r_symmetry_vdw_refined	0.104
r_chiral_restr	0.099
r_nbtor_other	0.084
r_bond_refined_d	0.015
r_gen_planes_refined	0.007
r_bond_other_d	0.003
r_gen_planes_other	0.003

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2263
Nucleic Acid Atoms
Solvent Atoms	286
Heterogen Atoms	12

Software

Software
Software Name	Purpose
REFMAC	refinement
PHENIX	refinement
SHELX	phasing
MolProbity	model building
SCALA	data scaling
PDB_EXTRACT	data extraction
MOSFLM	data reduction
SHELXD	phasing
autoSHARP	phasing