1PPC

GEOMETRY OF BINDING OF THE BENZAMIDINE-AND ARGININE-BASED INHIBITORS N-ALPHA-(2-NAPHTHYL-SULPHONYL-GLYCYL)-DL-P-AMIDINOPHENYLALANYL-PIPERIDINE (NAPAP) AND (2R,4R)-4-METHYL-1-[N-ALPHA-(3-METHYL-1,2,3,4-TETRAHYDRO-8-QUINOLINESULPHONYL)-L-ARGINYL]-2-PIPERIDINE CARBOXYLIC ACID (MQPA) TO HUMAN ALPHA-THROMBIN: X-RAY CRYSTALLOGRAPHIC DETERMINATION OF THE NAPAP-TRYPSIN COMPLEX AND MODELING OF NAPAP-THROMBIN AND MQPA-THROMBIN


X-RAY DIFFRACTION Experimental Data & Validation


X-ray Experimental Help

Crystal Data

Unit Cell
Length (Å) Angle (°)
a = 63.51 α = 90
b = 69.19 β = 90
c = 63.81 γ = 90
Symmetry
Space Group P 21 21 21

Diffraction

Diffraction Radiation
Monochromator Protocol
-- --
Diffraction Detector Source
Source Type Wavelength List Synchrotron Site Beamline

Refinement

Statistics
Structure Solution Method Refinement High Resolution Refinement Low Resolution Cut-off Sigma (I) Cut-off Sigma (F) Number of Reflections (All) Number of Reflections (Observed) Number of Reflections (R-Free) Percent Reflections (Observed) R-Factor (All) R-Factor (Observed) R-Work R-Free R-Free Selection Details
-- 1.8 -- -- -- -- -- -- -- -- 0.181 0.181 -- --
RMS Deviations
Key Refinement Restraint Deviation
x_bond_d 0.011
x_angle_deg 2.54
Number of Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms Numbers
Protein Atoms 1629
Nucleic Acid Atoms 0
Heterogen Atoms 38
Solvent Atoms 147

Software

Computing
Computing Package Purpose
X-PLOR Structure Solution
X-PLOR Structure Refinement
Software
Software Name Purpose
X-PLOR refinement
X-PLOR model building