4LK0

Crystal Structure Analysis of the E.coli holoenzyme/T7 Gp2 complex

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	NSLS BEAMLINE X29A
Synchrotron site	NSLS
Beamline	X29A
Temperature [K]	100
Detector technology	CCD
Collection date	2012-04-28
Detector	ADSC QUANTUM 315r
Wavelength(s)	1.075
Spacegroup name	P 21 21 21
Unit cell lengths	186.364, 206.283, 307.999
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	39.941 - 3.910
R-factor	0.221
Rwork	0.219
R-free	0.26020
Structure solution method	MOLECULAR REPLACEMENT
RMSD bond length	0.004
RMSD bond angle	0.913
Data reduction software	DENZO
Data scaling software	SCALEPACK
Phasing software	PHASER
Refinement software	PHENIX (1.8.1_1168)

Data quality characteristics

	Overall	Inner shell	Outer shell
Low resolution limit [Å]	40.000	40.000	4.040
High resolution limit [Å]	3.900	8.380	3.900
Rmerge	0.176	0.046
Number of reflections	103109
<I/σ(I)>	6.2
Completeness [%]	96.4	94.3	95.2
Redundancy	7	6.3	6.9

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	6	295	0.1 M MES, 0.1 M calcium acetate, 12-15% PEG 400, 5 mM dithiothreitol, pH 6.0, VAPOR DIFFUSION, HANGING DROP, temperature 295K