5P75

Automated refinement of diffraction data obtained from an endothiapepsin crystal treated with fragment 302

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	BESSY BEAMLINE 14.3
Synchrotron site	BESSY
Beamline	14.3
Temperature [K]	100
Detector technology	CCD
Collection date	2015-07-17
Detector	MAR CCD 165 mm
Wavelength(s)	0.895
Spacegroup name	P 1 21 1
Unit cell lengths	45.138, 72.839, 52.582
Unit cell angles	90.00, 108.96, 90.00

Refinement procedure

Resolution	28.182 - 1.431
R-factor	0.137
Rwork	0.135
R-free	0.16770
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	4y5l
RMSD bond length	0.007
RMSD bond angle	1.159
Data reduction software	XDS
Data scaling software	XDS
Phasing software	PHASER (2.5.7)
Refinement software	PHENIX

Data quality characteristics

	Overall	Inner shell	Outer shell
Low resolution limit [Å]	42.690		1.520
High resolution limit [Å]	1.430	4.270	1.430
Rmerge	0.051	0.021	0.403
Rmeas	0.062	0.025	0.498
Total number of observations	161245
Number of reflections	56978	2031	9350
<I/σ(I)>	14.75	46.08	2.63
Completeness [%]	95.9	88.2	98
Redundancy	2.829
CC(1/2)	0.999	0.999	0.793

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, SITTING DROP	4.6	290	0.1 M ammonium acetate, 0.1 M sodium acetate, 24-30% PEG 4000; crystal obtained by streak-seeding and soaked with 90 mM of fragment 302 with the SMILES code COC1=CC2=C(C(=O)C2)C(OC)=C1