5P02

Automated refinement of diffraction data obtained from an endothiapepsin crystal treated with fragment 49

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	BESSY BEAMLINE 14.1
Synchrotron site	BESSY
Beamline	14.1
Temperature [K]	100
Detector technology	CCD
Collection date	2012-09-04
Detector	MARMOSAIC 225 mm CCD
Wavelength(s)	0.91841
Spacegroup name	P 1 21 1
Unit cell lengths	45.494, 72.621, 52.616
Unit cell angles	90.00, 108.77, 90.00

Refinement procedure

Resolution	37.047 - 1.487
R-factor	0.1416
Rwork	0.140
R-free	0.17960
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	4y5l
RMSD bond length	0.007
RMSD bond angle	1.226
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]	43.073		1.580
High resolution limit [Å]	1.490	4.440	1.490
Rmerge	0.053	0.021	0.395
Rmeas	0.061	0.024	0.456
Total number of observations	220764
Number of reflections	52877	2048	8285
<I/σ(I)>	18.61	53.78	3.4
Completeness [%]	99.3	99.2	96.4
Redundancy	4.175
CC(1/2)	0.999	0.999	0.876

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 49 with the SMILES code CC(C)CN1C(C)=C(C)C2=C1N=CN1N=C(C)N=C21