1BPI

THE STRUCTURE OF BOVINE PANCREATIC TRYPSIN INHIBITOR AT 125K: DEFINITION OF CARBOXYL-TERMINAL RESIDUES GLYCINE-57 AND ALANINE-58

X-RAY DIFFRACTION

Crystallization

Crystal Properties
Matthews coefficient	Solvent content
1.86	34

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 75.39	α = 90
b = 22.581	β = 90
c = 28.6	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	125	DIFFRACTOMETER	SIEMENS		1984-06-23

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		1.09	10	20740			0.187

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]

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	460
Nucleic Acid Atoms
Solvent Atoms	166
Heterogen Atoms	11

Software

Software
Software Name	Purpose
SIEMENS	data collection
SHELXL-93	model building
SHELXL-93	refinement
XFIT	data reduction
SIEMENS	data reduction
SHELXL-93	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.