7CLA

Crystal structure of HTH-type transcriptional regulator SkgA from Caulobacter crescentus

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	SSRF BEAMLINE BL19U1
Synchrotron site	SSRF
Beamline	BL19U1
Temperature [K]	100
Detector technology	CCD
Collection date	2016-11-25
Detector	ADSC QUANTUM 315r
Wavelength(s)	0.97852
Spacegroup name	P 65 2 2
Unit cell lengths	89.572, 89.572, 88.961
Unit cell angles	90.00, 90.00, 120.00

Refinement procedure

Resolution	44.830 - 2.500
R-factor	0.2123
Rwork	0.209
R-free	0.26790
Structure solution method	SAD
Starting model (for MR)	3qao
RMSD bond length	0.015
RMSD bond angle	1.803
Data reduction software	HKL-3000
Data scaling software	HKL-3000
Phasing software	AutoSol
Refinement software	REFMAC (5.8.0258)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	77.570	2.590
High resolution limit [Å]	2.500	2.500
Rmerge	0.111	1.145
Rmeas	0.113
Rpim	0.019	0.299
Number of reflections	7759	742
<I/σ(I)>	37.8	1.75
Completeness [%]	99.9	99.5
Redundancy	19.9	13.1
CC(1/2)		0.748

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	7.8	289	13% ethanol, 100 mM NaCl, 5% MPD and 100 mM Tris-HCl pH 7.8