5R48

Crystal Structure of gamma-Chymotrypsin at pH 5.6, room temperature

Experimental procedure

Experimental method	SINGLE WAVELENGTH
Source type	SYNCHROTRON
Source details	APS BEAMLINE 23-ID-B
Synchrotron site	APS
Beamline	23-ID-B
Temperature [K]	100
Detector technology	CCD
Collection date	2009-07-15
Detector	MARMOSAIC 300 mm CCD
Wavelength(s)	0.9
Spacegroup name	P 42 21 2
Unit cell lengths	69.603, 69.603, 97.909
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	56.730 - 1.050
R-factor	0.109
Rwork	0.108
R-free	0.11970
Structure solution method	FOURIER SYNTHESIS
Starting model (for MR)	1gct
RMSD bond length	0.011
RMSD bond angle	1.507
Data reduction software	HKL-2000
Data scaling software	SCALEPACK
Phasing software	PHENIX
Refinement software	REFMAC (5.8.0158)

Data quality characteristics

	Overall	Inner shell	Outer shell
Low resolution limit [Å]	50.000	50.000	1.090
High resolution limit [Å]	1.050	2.260	1.050
Rmerge	0.109	0.087	0.726
Total number of observations	4389000
Number of reflections	111717	11769	10659
<I/σ(I)>	13.1
Completeness [%]	99.6	99.6	96.2
Redundancy	39.3	46.8	5

Crystallization Conditions

crystal ID	method	pH	temperature	details
1	VAPOR DIFFUSION, SITTING DROP		297	45% saturated ammonium sulfate, 0.75% saturated cetyltrimethylammonium bromide, 100 mM sodium iodide; sodium malonate