2I7C | pdb_00002i7c

The crystal structure of spermidine synthase from p. falciparum in complex with AdoDATO

X-RAY DIFFRACTION

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2HTE	pdb entry 2HTE

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	5.6	291	23% w/v PEG3350, 0.1M Ammonium Sulphate, 0.1M Bis-Tris, 15% glycerol, 1 mM AdoDATO (S-adenosyl-1,8-diamino-3-thiooctane), pH 5.6, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
3.33	63.08

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 198.168	α = 90
b = 134.685	β = 95.44
c = 48.5	γ = 90

Symmetry
Space Group	C 1 2 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	MAR CCD 165 mm		2006-08-11	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 17-BM	1.00	APS	17-BM

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (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	1.71	50	93.8	0.045	25.7	3.7	137061	126855		5	24.6

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.71	1.74	51		0.331	2.74	2.6	3482

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	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	MOLECULAR REPLACEMENT	THROUGHOUT	pdb entry 2HTE	1.71	35.92	122193	6456	93.96	0.17624	0.17531	0.17	0.19384	0.19	RANDOM	25.045

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]
-0.13		-0.15	0.07		0.03

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	38.383
r_dihedral_angle_4_deg	20.337
r_dihedral_angle_3_deg	13.125
r_dihedral_angle_1_deg	6.542
r_scangle_it	2.918
r_scbond_it	1.967
r_angle_refined_deg	1.323
r_mcangle_it	1.252
r_mcbond_it	0.809
r_nbtor_refined	0.304
r_nbd_refined	0.197
r_symmetry_hbond_refined	0.168
r_symmetry_vdw_refined	0.13
r_chiral_restr	0.098
r_xyhbond_nbd_refined	0.094
r_bond_refined_d	0.013
r_gen_planes_refined	0.006

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6753
Nucleic Acid Atoms
Solvent Atoms	571
Heterogen Atoms	139

Software

Software
Software Name	Purpose
REFMAC	refinement
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling