7RON | pdb_00007ron

Crystal structure of the Friedel-Crafts alkylating enzyme CylK from Cylindospermum licheniforme

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	7	298	Prior to crystallization trials, purified CylK protein in storage buffer (20 mM HEPES pH 7.8, 50 mM NaCl, 10 mM MgCl2, 10 mM CaCl2, 10% glycerol) was combined with 5-undecylbenzene-1,3-diol (UDR), a substrate analog dissolved in protein storage buffer containing 22% DMSO. The final protein solution contained 10 mg/mL CylK and 1.66 mM UDR. Crystals of undecylresorcinol-bound CylK were obtained by using the hanging drop vapor diffusion method in 2 uL drops mixed in 1:1 ratio with a precipitant solution of 1.8 M sodium malonate, pH 7.0. Crystals formed within about 1 week at room temperature

Crystal Properties
Matthews coefficient	Solvent content
2.16	42.97

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 93.667	α = 90
b = 138.613	β = 90
c = 99.438	γ = 90

Symmetry
Space Group	C 2 2 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	80	CCD	MARMOSAIC 300 mm CCD		2020-02-14	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 21-ID-F	0.97872	APS	21-ID-F

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	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	1.68	50	99.8	0.097	0.101	0.026	7.3	14.8		73688

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	Rpim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.68	1.71	99.3		1.279	1.326	0.346	0.78		14.3

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	SAD	THROUGHOUT	1.68	42.41	68476	3627	97.65	0.1573	0.1556	0.1661	0.1893	0.198	RANDOM	17.173

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]
0.14			-0.26		0.12

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.655
r_dihedral_angle_4_deg	22.683
r_dihedral_angle_3_deg	12.543
r_dihedral_angle_1_deg	7.393
r_angle_refined_deg	1.921
r_angle_other_deg	1.591
r_chiral_restr	0.096
r_bond_refined_d	0.016
r_gen_planes_refined	0.013
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4882
Nucleic Acid Atoms
Solvent Atoms	339
Heterogen Atoms	50

Software

Software
Software Name	Purpose
REFMAC	refinement
SCALEPACK	data scaling
PDB_EXTRACT	data extraction
HKL-2000	data reduction
PHASER	phasing