1AY4

AROMATIC AMINO ACID AMINOTRANSFERASE WITHOUT SUBSTRATE

Experimental procedure

Source type	ROTATING ANODE
Source details	RIGAKU RUH2R
Temperature [K]	293
Detector technology	IMAGE PLATE
Collection date	1996-03-07
Detector	RIGAKU
Spacegroup name	P 21 21 21
Unit cell lengths	123.720, 123.060, 55.160
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	6.000 - 2.330
R-factor	0.175
Rwork	0.175
R-free	0.23700
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	1art
RMSD bond length	0.007
RMSD bond angle	23.300 *
Data reduction software	PROCESS ((RIGAKU))
Data scaling software	PROCESS ((RIGAKU))
Phasing software	X-PLOR (3.1)
Refinement software	X-PLOR (3.1)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	123.000	2.500
High resolution limit [Å]	2.330	2.330
Rmerge	0.075	0.174
Total number of observations	110551 *
Number of reflections	33010
<I/σ(I)>	11.5	4
Completeness [%]	97.4	95.4
Redundancy	3.4	2.4

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	Vapor diffusion, sitting drop *	5.7	20 *	used to seeding *

Crystallization Reagents in Literatures

ID	crystal ID	solution	reagent name	concentration (unit)	details
1	1	drop	protein	6 (mg/ml)
2	1	drop	HEPES-NaOH	1 (mM)
3	1	drop	dithiothreitol	0.05 (mM)
4	1	drop		0.01 (%)
5	1	drop	PEG4000	8.25 (%(w/v))
6	1	drop	sodium acetate	0.2 (M)
7	1	reservoir	PEG4000	16.5 (%(w/v))
8	1	reservoir	sodium acetate	0.4 (M)