4LXW

L72V Epi-isozizaene synthase: Complex with Mg, inorganic pyrophosphate and benzyl triethyl ammonium cation

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	3KB9	PDBID: 3KB9

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.5	298	A 4 uL drop of protein solution [8 mg/mL L72V EIZS, 20 mM Tris-HCl (pH 7.5), 300 mM NaCl, 10 mM MgCl2, 10% glycerol, 1 mM TCEP, 2 mM sodium pyrophosphate, 2 mM benzyltriethylammonium chloride (BTAC)] was added to a 4 uL drop of precipitant solution [100 mM Bis-Tris (pH 5.5), 25-28% polyethylene glycol 3350, 0.2 M (NH4)2SO4] and equilibrated against a 1 mL reservoir of precipitant solution at room temperature., VAPOR DIFFUSION, HANGING DROP, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
2.14	42.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.977	α = 90
b = 47.236	β = 95.66
c = 75.084	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	ADSC QUANTUM 315	Monochromator: Double silicon (111) crystal monochromator with cryogenically-cooled first crystal and sagittally-bent second crystal horizontally-focusing at3.3:1 demagnification. Mirror: Meridionally-bent fused silica mirror with palladium and uncoated stripes vertically-focusing at 6.6:1 demagnification.	2010-03-04	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	NSLS BEAMLINE X29A	1.008	NSLS	X29A

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	2.092	50	99.9	0.104	0.104	12.204	3.6		22011		-3

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	2.1	2.18	99.2		0.301	0.301	3.479	3.5

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDBID: 3KB9	2.092	41.203	1.34	22011	21998	2000	99.5	0.1758	0.1727	0.2058

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]
5.4288		2.907	-0.3348		-5.094

RMS Deviations
Key	Refinement Restraint Deviation
f_dihedral_angle_d	13.353
f_angle_d	0.649
f_chiral_restr	0.048
f_bond_d	0.002
f_plane_restr	0.002

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2780
Nucleic Acid Atoms
Solvent Atoms	241
Heterogen Atoms	43

Software

Software
Software Name	Purpose
CBASS	data collection
PHASES	phasing
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.