5R49

Crystal Structure of gamma-Chymotrypsin at pH 5.6, cryo 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	2009-04-13
Detector	MARMOSAIC 300 mm CCD
Wavelength(s)	0.9
Spacegroup name	P 42 21 2
Unit cell lengths	68.619, 68.619, 96.688
Unit cell angles	90.00, 90.00, 90.00

Refinement procedure

Resolution	55.960 - 1.050
R-factor	0.1166
Rwork	0.116
R-free	0.12900
Structure solution method	FOURIER SYNTHESIS
Starting model (for MR)	1gct
RMSD bond length	0.012
RMSD bond angle	1.563
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	0.100	0.063	0.421
Total number of observations	1773385
Number of reflections	106268	11275	9767
<I/σ(I)>	18.1
Completeness [%]	99.2	99.8	92.5
Redundancy	16.7	18.3	4.5

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