1AJS

REFINEMENT AND COMPARISON OF THE CRYSTAL STRUCTURES OF PIG CYTOSOLIC ASPARTATE AMINOTRANSFERASE AND ITS COMPLEX WITH 2-METHYLASPARTATE

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.4		40MM SODIUM ACETATE (PH 5.4)/8% PEG6000

Crystal Properties
Matthews coefficient	Solvent content
2.5	48

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 125	α = 90
b = 130.8	β = 90
c = 55.8	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	298	AREA DETECTOR	XUONG-HAMLIN MULTIWIRE		1990-12-30	M

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH2R

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	1.6	100	93.7	0.06	11.3	4.2		114162			16.1

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)
	1.6	1.73	69.9		0.197	2.3	2.7

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Cut-off Sigma (F)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION	ISOMORPHOUS DIFFERENCE MAP	1.6	8	2	108895		90.6	0.173			22.8

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]

RMS Deviations
Key	Refinement Restraint Deviation
p_transverse_tor	28.7
p_staggered_tor	18.2
p_scangle_it	11.2
p_scbond_it	7.6
p_planar_tor	4.4
p_mcangle_it	3.8
p_mcbond_it	2.5
p_singtor_nbd	0.17
p_multtor_nbd	0.168
p_chiral_restr	0.156
p_xyhbond_nbd	0.156
p_planar_d	0.044
p_angle_d	0.028
p_plane_restr	0.014
p_bond_d	0.013
p_angle_deg
p_hb_or_metal_coord
p_xhyhbond_nbd
p_orthonormal_tor
p_special_tor

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	6546
Nucleic Acid Atoms
Solvent Atoms	325
Heterogen Atoms	42

Software

Software
Software Name	Purpose
SEE	model building
PROLSQ	refinement
UCSD	data reduction
FROM	data scaling