Experiment: 3NEM

Aspartyl-tRNA synthetase complexed with aspartyl adenylate

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1ASZ	PDB ENTRY 1ASZ

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1			297	peg and ethylene glycol, VAPOR DIFFUSION, HANGING DROP, temperature 297K

Crystal Properties
Matthews coefficient	Solvent content
3.28	62.5

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 123.22	α = 90
b = 124.87	β = 90
c = 86.93	γ = 90

Symmetry
Space Group	P 21 21 2

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	120	IMAGE PLATE	MAR scanner 345 mm plate		1997-03-12	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	LURE BEAMLINE DW32		LURE	DW32

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	1.89	28.63	95.7	0.05		3.8		103073			15.82

Refinement

Statistics
Diffraction ID	Structure Solution Method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	PDB ENTRY 1ASZ	1.89	28.58	103073	5053		0.188	0.1825	0.213	0.2099	17.38

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	7186
Nucleic Acid Atoms
Solvent Atoms	473
Heterogen Atoms	65

Software

Software
Software Name	Purpose
MAR345dtb	data collection
AMoRE	phasing
X-PLOR	refinement
MOSFLM	data reduction
SCALA	data scaling
PHENIX	refinement