ISDA: 1AB9

X-RAY DIFFRACTION

Crystallization Details

Method	pH	Temprature	Details
X-RAY DIFFRACTION	5.6	?	ALPHA-CHYMOTRYPSIN WAS DISSOLVED IN POTASSIUM BORATE (PH8.6) AND WAS INCUBATED AT 310K FOR 6 HOURS. SOLID AMMONIUM SULFATE WAS ADDED TO THE SOLUTION, AND THE PRECIPITATE FORMED WAS RECOVERED AND RE-DISSOLVED WITH WATER. CRYSTALLIZATION WAS DONE WITH A SITTING-DROP VAPOR-DIFFUSION PROCEDURE, IN WHICH PROTEIN SOLUTION (15MG/ML) CONTAINING 10MM CACODYLATE, 0.75% SATURATED ACETYLTRIMETHYL AMMONIUM AND 45% SATURATED AMMONIUM SULFATE WAS EQUILIBRATED AGAINST 65% SATURATED AMMONIUM SULFATE AT 293K., pH 5.6, vapor diffusion - sitting drop

Unit Cell:

a: 69.520 Å b: 69.520 Å c: 97.810 Å α: 90.00° β: 90.00° γ: 90.00°

Symmetry:

Space Group: P 42 21 2

Crystal Properties:

Matthew's Coefficient: 2.29 Solvent Content: 46.28

Refinement Statistics

Diffraction ID	Structure Solution Method	Cross Validation Method	Resolution Limit (High)	Resolution Limit (Low)	Number of Reflections (Observed)	Number of Reflections (R-free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	POSTERIORI	1.60	5.00	30329	2496	97.3	0.191	0.19	21.2

Data Collection

Overall

Resolution Limit (High)	Resolution Limit (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1.60	69.5	97.8	0.055	?	15.1	10.3	?	31740	?	1.	19.0

Highest Resolution Shell

#	Resolution Limits (Low)	Resolution Limits (High)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.60	1.65	94.7		?	3.10	?

Diffraction

Diffraction experiment

Crystal ID	Scattering Type	Data Collection Temprature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1		292 K

Radiation Source

Source	Type	Wavelength List	Synchrotron Site	Beamline
ROTATING ANODE	RIGAKU RUH2R	?	?	?

Software