Experiment: 2FX4

Bovine trypsin bound by 4-piperidinebutyrate to make acylenzyme complex

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION	8.2	298	25-35 mg/ml protein, 10 mM benzamidine, 0.9-1.2 M Magnesium sulfate, 25-50 mM Tris-HCl, 1.0 mM CaCl2, hanging/sitting drop, 4piperidinebutyrate, pH 8.20, VAPOR DIFFUSION, temperature 298K

Crystal Properties
Matthews coefficient	Solvent content
3.02	59.23

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 63.94	α = 90
b = 63.21	β = 90
c = 69.67	γ = 90

Symmetry
Space Group	P 21 21 21

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	280	IMAGE PLATE	RIGAKU RAXIS IV	Osmic mirrors	2004-05-05	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH3R	1.5418

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge 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	1.65	37.7	99.2	0.051			34643	34643

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.65	1.74	97.5		0.202	2

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (All)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (All)	R-Factor (Observed)	R-Work (Depositor)	R-Work (DCC)	R-Free (Depositor)	R-Free (DCC)	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	FOURIER SYNTHESIS	1.65	7	33906	33906	3440		0.19	0.19	0.188	0.187	0.198	0.1862	RANDOM

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]

RMS Deviations
Key	Refinement Restraint Deviation
x_dihedral_angle_d	26.3
x_angle_deg	3.5
x_improper_angle_d	0.54
x_bond_d	0.016

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1667
Nucleic Acid Atoms
Solvent Atoms	157
Heterogen Atoms	12

Software

Software
Software Name	Purpose
CrystalClear	data reduction
X-PLOR	refinement
CrystalClear	data scaling