5P5U

Automated refinement of diffraction data obtained from an endothiapepsin crystal treated with fragment 255

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	2014-02-15
Detector	MAR CCD 165 mm
Wavelength(s)	0.8944
Spacegroup name	P 1 21 1
Unit cell lengths	45.290, 73.089, 52.793
Unit cell angles	90.00, 109.61, 90.00

Refinement procedure

Resolution	19.181 - 1.419
R-factor	0.1344
Rwork	0.133
R-free	0.16720
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	4y5l
RMSD bond length	0.007
RMSD bond angle	1.166
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]	19.181		1.500
High resolution limit [Å]	1.420	4.170	1.420
Rmerge	0.064	0.020	0.502
Rmeas	0.073	0.023	0.577
Total number of observations	256414
Number of reflections	61045	2454	9738
<I/σ(I)>	17.31	60.27	3.1
Completeness [%]	99.6	98.5	99
Redundancy	4.2
CC(1/2)	0.999	0.999	0.831

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 255 with the SMILES code O=C(CC1=CN2C=CC=CC2=N1)NC1=CC=CC=C1