2B2C

Cloning, expression, characterisation and three- dimensional structure determination of the Caenorhabditis elegans spermidine synthase

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	293.15	PEG 3350, Lithium sulfate, Tris-CL, Dithiothreitol, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293.15K

Crystal Properties
Matthews coefficient	Solvent content
2.8	55

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 59.99	α = 90
b = 99.23	β = 107.2
c = 67.85	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	75.15	CCD	MARRESEARCH		2005-02-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SLS BEAMLINE X06SA	0.89978	SLS	X06SA

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	2.5	20	94.9	0.108			25260	25260

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	2.5	2.65	88.77

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	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	2.5	20	24926	24926	1312	100	0.22	0.22032	0.219	0.25415	RANDOM	51.039

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]
8.42		2.35	-5.09		-1.94

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	37.869
r_dihedral_angle_4_deg	24.032
r_dihedral_angle_3_deg	18.742
r_dihedral_angle_1_deg	7.672
r_scangle_it	7.392
r_scbond_it	5.106
r_mcangle_it	2.964
r_angle_refined_deg	1.484
r_mcbond_it	1.445
r_nbtor_refined	0.312
r_nbd_refined	0.219
r_symmetry_hbond_refined	0.181
r_xyhbond_nbd_refined	0.168
r_chiral_restr	0.109
r_symmetry_vdw_refined	0.088
r_bond_refined_d	0.012
r_gen_planes_refined	0.005
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	4378
Nucleic Acid Atoms
Solvent Atoms	84
Heterogen Atoms

Software

Software
Software Name	Purpose
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
MAR345	data collection
XDS	data scaling