5CNP

X-ray crystal structure of Spermidine n1-acetyltransferase from Vibrio cholerae.

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	8.5	294	0.1 M Tris buffer, 8% isopropanol

Crystal Properties
Matthews coefficient	Solvent content
3.01	59.09

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 159.931	α = 90
b = 134.176	β = 114.43
c = 77.477	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	SBC-3		2004-10-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 19-BM	0.9792	APS	19-BM

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	2.38	38.6	98.2	0.066	10.6	4.6		58601

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.4	2.47	91.6		0.484		3.5	8901

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	SAD	THROUGHOUT	2.38	36.8	54667	3934	98.36	0.1881	0.1847	0.2357	RANDOM	50.164

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]
-0.94		-0.24	0.42		0.52

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.921
r_dihedral_angle_4_deg	20.143
r_dihedral_angle_3_deg	15.454
r_dihedral_angle_1_deg	6.143
r_mcangle_it	3.306
r_mcbond_it	2.107
r_mcbond_other	2.107
r_angle_refined_deg	1.483
r_angle_other_deg	0.782
r_chiral_restr	0.079
r_bond_refined_d	0.012
r_gen_planes_refined	0.006
r_bond_other_d	0.001
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	8657
Nucleic Acid Atoms
Solvent Atoms	238
Heterogen Atoms	11

Software

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