2ORD

Crystal structure of Acetylornithine aminotransferase (EC 2.6.1.11) (ACOAT) (TM1785) from Thermotoga maritima at 1.40 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	6.5	293	NANODROP, 1.6M Sodium citrate, 0.1M Cacodylate pH 6.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.33	47.15

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 90.948	α = 90
b = 95.628	β = 90
c = 96.089	γ = 90

Symmetry
Space Group	P 21 21 21

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	MARMOSAIC 325 mm CCD	Flat mirror (vertical focusing)	2006-12-17	M	MAD

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL11-1	0.91837, 0.97937, 0.97876	SSRL	BL11-1

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	1.4	42.796	82.3	0.067	10.89			137451			17.75

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	1.4	1.45	33.5		0.454	2.1		5461

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 (All)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MAD	THROUGHOUT	1.4	42.796	137417	6909	84.15	0.149	0.149	0.148	0.17	RANDOM	14.058

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			-0.35		0.49

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	34.398
r_dihedral_angle_4_deg	18.949
r_dihedral_angle_3_deg	13.298
r_dihedral_angle_1_deg	5.929
r_scangle_it	5.04
r_scbond_it	3.768
r_mcangle_it	2.266
r_mcbond_it	1.902
r_angle_refined_deg	1.415
r_angle_other_deg	0.826
r_mcbond_other	0.475
r_symmetry_vdw_other	0.266
r_symmetry_hbond_refined	0.25
r_symmetry_vdw_refined	0.224
r_nbd_refined	0.219
r_nbtor_refined	0.183
r_nbd_other	0.18
r_xyhbond_nbd_refined	0.157
r_chiral_restr	0.089
r_nbtor_other	0.084
r_xyhbond_nbd_other	0.058
r_bond_refined_d	0.015
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	6136
Nucleic Acid Atoms
Solvent Atoms	670
Heterogen Atoms	132

Software

Software
Software Name	Purpose
MolProbity	model building
SHELX	phasing
REFMAC	refinement
XSCALE	data scaling
PDB_EXTRACT	data extraction
MAR345	data collection
XDS	data reduction
SHELXD	phasing
autoSHARP	phasing