9Z1S

Backbone Modification in the GCN4 Leucine Zipper: beta3-Ala at position 24

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SEALED TUBE
Source details	BRUKER IMUS 3.0 MICROFOCUS
Temperature [K]	100
Detector technology	PIXEL
Collection date	2025-04-07
Detector	Bruker PHOTON III
Wavelength(s)	1.541840
Spacegroup name	C 1 2 1
Unit cell lengths	84.259, 30.858, 27.886
Unit cell angles	90.00, 102.05, 90.00

Refinement procedure

Resolution	28.900 - 1.750
R-factor	0.2104
Rwork	0.208
R-free	0.23340
Structure solution method	MOLECULAR REPLACEMENT
RMSD bond length	0.003
RMSD bond angle	0.644
Data reduction software	XDS
Data scaling software	XDS
Phasing software	PHASER
Refinement software	PHENIX (1.21.2_5419)

Data quality characteristics

	Overall	Outer shell
Low resolution limit [Å]	50.000	1.860
High resolution limit [Å]	1.750	1.750
Rmeas	0.051	0.476
Number of reflections	7123	1129
<I/σ(I)>	30.3	4.1
Completeness [%]	98.3	96.6
Redundancy	6.7	5.6

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, HANGING DROP	4.6	298	0.2 M sodium acetate pH 4.6, 0.1 M sodium citrate pH 4.6, 10% w/v PEG 3350