5P09

Automated refinement of diffraction data obtained from an endothiapepsin crystal treated with fragment 56

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	2012-11-16
Detector	MARMOSAIC 225 mm CCD
Wavelength(s)	0.8912
Spacegroup name	P 1 21 1
Unit cell lengths	45.132, 72.690, 52.603
Unit cell angles	90.00, 109.63, 90.00

Refinement procedure

Resolution	27.952 - 1.609
R-factor	0.1467
Rwork	0.144
R-free	0.19980
Structure solution method	MOLECULAR REPLACEMENT
Starting model (for MR)	4y5l
RMSD bond length	0.009
RMSD bond angle	1.155
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]	42.508		1.710
High resolution limit [Å]	1.610	4.800	1.610
Rmerge	0.075	0.025	0.465
Rmeas	0.086	0.029	0.543
Total number of observations	167920
Number of reflections	40942	1590	6168
<I/σ(I)>	16.92	45.94	3.31
Completeness [%]	98.5	97.8	92.3
Redundancy	4.101
CC(1/2)	0.998	0.999	0.780

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 56 with the SMILES code O[C@@H](C(O)=O)C1=CC(Cl)=CC=C1