1O4S

Crystal structure of Aspartate aminotransferase (TM1255) from Thermotoga maritima at 1.90 A resolution

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1			293	2.4 (NH4)2SO4 9 CHES , VAPOR DIFFUSION,SITTING DROP,NANODROP, temperature 293K

Crystal Properties
Matthews coefficient	Solvent content
2.31	46.34

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 64.048	α = 90
b = 79.509	β = 90
c = 170.184	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	ADSC QUANTUM 4		2003-04-16	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	APS BEAMLINE 14-BM-C		APS	14-BM-C

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	1.9	43.03	85.8	0.063	15.9	4.8		59510			36.89

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	1.9	2	50.6		0.422	1.7	1.8

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MR	THROUGHOUT	1BKG	1.9	43	58261	1249	85.8	0.16	0.159	0.2	RANDOM	31.06

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]
2.15			-0.19		-1.96

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	30.445
r_dihedral_angle_3_deg	15.962
r_dihedral_angle_4_deg	14.915
r_dihedral_angle_1_deg	6.147
r_scangle_it	4.237
r_scbond_it	2.473
r_angle_refined_deg	1.623
r_mcangle_it	1.459
r_angle_other_deg	1.2
r_mcbond_it	0.749
r_symmetry_vdw_other	0.366
r_symmetry_hbond_refined	0.312
r_nbd_other	0.239
r_symmetry_vdw_refined	0.221
r_xyhbond_nbd_refined	0.216
r_nbd_refined	0.21
r_chiral_restr	0.093
r_nbtor_other	0.086
r_bond_refined_d	0.017
r_gen_planes_refined	0.006
r_bond_other_d	0.002
r_gen_planes_other	0.001
r_nbtor_refined
r_xyhbond_nbd_other
r_metal_ion_refined
r_metal_ion_other
r_symmetry_hbond_other
r_rigid_bond_restr
r_sphericity_free
r_sphericity_bonded

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	5995
Nucleic Acid Atoms
Solvent Atoms	587
Heterogen Atoms	75

Software

Software
Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
MOLREP	phasing
REFMAC	refinement
CCP4	data scaling