8TIV

Isoreticular, interpenetrating co-crystal of Replication Initiator Protein REPE54 and symmetrical expanded duplex (31mer) containing the cognate REPE54 sequence and an additional G-C rich sequence with blunt ends and 5' terminal phosphates and crosslinked with EDC.

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	ALS BEAMLINE 4.2.2
Synchrotron site	ALS
Beamline	4.2.2
Temperature [K]	100
Detector technology	CMOS
Collection date	2021-11-12
Detector	RDI CMOS_8M
Wavelength(s)	1.0
Spacegroup name	I 2 2 2
Unit cell lengths	72.463, 133.183, 133.626
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	37.850 - 3.350
R-factor	0.2388
Rwork	0.236
R-free	0.26010
Structure solution method	MOLECULAR REPLACEMENT
RMSD bond length	0.005
RMSD bond angle	0.814
Data reduction software	XDS (Jan 31, 2020)
Data scaling software	XSCALE (Jan 31, 2020)
Phasing software	PHASER (2.8.2)
Refinement software	PHENIX (1.19.2_4158)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	37.850	3.470
High resolution limit [Å]	3.350	3.350
Rmerge	0.106	1.142
Rmeas	0.115	1.228
Rpim	0.042	0.448
Number of reflections	9575	922
<I/σ(I)>	10.65	1.89
Completeness [%]	98.9	98.28
Redundancy	7.3	7.4
CC(1/2)	0.999	0.866

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, SITTING DROP	8	298	350 mM MgCl2, 25% PEG 400, and 100 mM Tris HCl