6PTG

Structure of RNA polymerase binding protein and transcriptional regulator Dks from Chlamydia trachomatis L2 (LGV434)

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	APS BEAMLINE 21-ID-F
Synchrotron site	APS
Beamline	21-ID-F
Temperature [K]	100
Detector technology	CCD
Collection date	2019-06-27
Detector	RAYONIX MX-300
Wavelength(s)	0.97872
Spacegroup name	P 32 2 1
Unit cell lengths	83.420, 83.420, 99.030
Unit cell angles	90.00, 90.00, 120.00

Refinement procedure

Resolution	30.024 - 2.950
R-factor	0.1866
Rwork	0.182
R-free	0.22640
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	MR-Rosetta using input from PDB codes 4ijj 1tjl 2kq9 2kgo and 5w1s
RMSD bond length	0.004
RMSD bond angle	0.542
Data reduction software	XDS
Data scaling software	XSCALE
Phasing software	MR-Rosetta
Refinement software	PHENIX ((dev_3500))

Data quality characteristics

	Overall	Inner shell	Outer shell
Low resolution limit [Å]	30.024	30.024	3.030
High resolution limit [Å]	2.950	13.190	2.950
Rmerge	0.068	0.025	0.625
Rmeas	0.074	0.028	0.682
Total number of observations	52942
Number of reflections	8668	109	628
<I/σ(I)>	20.54	45.49	3.12
Completeness [%]	98.8	85.2	98.9
Redundancy	6.108	4.422	6.225
CC(1/2)	0.999	0.999	0.890

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, SITTING DROP	7.5	290	Optimization screen HRCS_B5_PEG4000-3350, based on Hampton Research Crystal Screen B5, condition H3: 200mM Lithium sulfate, 25% (w/V) PEG 4000, 100mM Tris Base / HCl pH 8.5: ChtrB.19237.a.B1.PW38581 at 24mg/ml, grown at 14C: cryo: 15% EG: tray 310000 h3: puck lkp6-3