1ELB

Analogous inhibitors of elastase do not always bind analogously

X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1				THE COMPLEX WAS DONE BY SOAKING OF THE INHIBITOR. THE NATIVE ELASTASE CRYSTALS WERE TRANSFERRED FROM THE SITTING DROP TO A HIGH-SALT MOTHER LIQUOR CONTAINING THE TFA-LYS-PRO-ISO INHIBITOR AT A CONCENTRATION OF 0.1 MILLIMOLAR. THE INHIBITOR WAS SOAKED FOR FOUR DAYS.

Crystal Properties
Matthews coefficient	Solvent content
2.1	41.32

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 50.69	α = 90
b = 58.05	β = 90
c = 75.25	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

Refinement

Statistics
Diffraction ID	Structure Solution Method	Resolution (High)	Resolution (Low)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		2.1	10			0.15	0.15

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	1822
Nucleic Acid Atoms
Solvent Atoms	126
Heterogen Atoms	39

Software

Software
Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	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.