1LRR

CRYSTAL STRUCTURE OF E. COLI SEQA COMPLEXED WITH HEMIMETHYLATED DNA

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	ROTATING ANODE
Source details	RIGAKU RU200
Temperature [K]	100
Detector technology	IMAGE PLATE
Collection date	2002-04-01
Detector	RIGAKU RAXIS IV
Wavelength(s)	1.5418
Spacegroup name	P 42
Unit cell lengths	106.493, 106.493, 49.078
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	25.000 * - 2.650
Rwork	0.248
R-free	0.27800
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	seqA-C
RMSD bond length	0.008
RMSD bond angle	1.300
Data reduction software	DENZO
Data scaling software	SCALEPACK
Phasing software	CNS
Refinement software	CNS (1.1)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	25.000	2.700
High resolution limit [Å]	2.650	2.650
Rmerge	0.087	0.355
Number of reflections	16187
<I/σ(I)>	14.6	2.3
Completeness [%]	99.2	98.5
Redundancy	3.2	2.9

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	8.5	4 *	PEG 4000, lithium sulphate, TRIS-HCl, pH 8.5, VAPOR DIFFUSION, HANGING DROP, temperature 277K

Crystallization Reagents in Literatures

ID	crystal ID	solution	reagent name	concentration (unit)	details
1	1	drop	protein	5 (mg/ml)
2	1	reservoir	PEG4000	20-23 (%(w/v))
3	1	reservoir		0.2 (M)
4	1	reservoir	Tris	0.1 (M)	pH8.5