7EST

Interaction of the peptide CF3-LEU-ALA-NH-C6H4-CF3(TFLA) with porcine pancreatic elastase. X-ray studies at 1.8 Angstroms

X-RAY DIFFRACTION

---

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1		5.7		10% DMF SOLUTION BUFFERED AT PH 5.7 WITH ACETATE

Crystal Properties
Matthews coefficient	Solvent content
2.15	42.88

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 52.53	α = 90
b = 57.47	β = 90
c = 75.26	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	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic B
X-RAY DIFFRACTION		ELASTASE COMPLEXED WITH A TRIFLUOROACETYL DIPEPTIDE INHIBITOR, (PDB ENTRY 2EST)	1.8				0.19

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_angle_deg	2
x_bond_d	0.02
x_bond_d_na
x_bond_d_prot
x_angle_d
x_angle_d_na
x_angle_d_prot
x_angle_deg_na
x_angle_deg_prot
x_dihedral_angle_d
x_dihedral_angle_d_na
x_dihedral_angle_d_prot
x_improper_angle_d
x_improper_angle_d_na
x_improper_angle_d_prot
x_mcbond_it
x_mcangle_it
x_scbond_it
x_scangle_it

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	1822
Nucleic Acid Atoms
Solvent Atoms	103
Heterogen Atoms	61

Software

Software
Software Name	Purpose
X-PLOR	refinement