1D3I

CRYO-EM STRUCTURE OF HUMAN RHINOVIRUS 14 (HRV14) COMPLEXED WITH A TWO-DOMAIN FRAGMENT OF ITS CELLULAR RECEPTOR, INTERCELLULAR ADHESION MOLECULE-1 (D1D2-ICAM-1). IMPLICATIONS FOR VIRUS-RECEPTOR INTERACTIONS. ALPHA CARBONS ONLY


ELECTRON MICROSCOPY Experimental Data



EM Sample
Sample Vitrification Details HRV14 WAS INCUBATED WITH D1D2-ICAM-1 FOR 30 MINUTES AT 4 DEGREES CELSIUS (277 KELVIN) USING AN EIGHT-FOLD EXCESS OF D1D2-ICAM-1 FOR EACH OF THE SIXTY POSSIBLE BINDING SITES PER VIRION. AFTER INCUBATION, SAMPLES WERE PREPARED AS THIN LAYERS OF VITREOUS ICE AND MAINTAINED AT NEAR LIQUID NITROGEN TEMPERATURE IN THE ELECTRON MICROSCOPE WITH A GATAN 626 CRYOTRANSFER HOLDER.
Sample Aggregation State PARTICLE
Sample Reconstruction Method SINGLE PARTICLE
Name of Sample HUMAN RHINOVIRUS 14 COMPLEXED WITH INTERCELLULAR ADHESION MOLECULE-1
EM Data Acquisition
Date of Experiment 1993-06-01
Temperature (Kelvin) 120.0
Microscope Model FEI/PHILIPS EM420
Detector Type KODAK SO-163 FILM
Minimum Defocus (nm) --
Maximum Defocus (nm) 1250.0
Minimum Tilt Angle (degrees) --
Maximum Tilt Angle (degrees) --
Nominal CS --
Imaging Mode BRIGHT FIELD
Electron Dose (electrons per Å**-2) 20.0
Illumination Mode FLOOD BEAM
Nominal Magnification 49000
Calibrated Magnification --
Source --
Acceleration Voltage (kV) 80
Imaging Details --
3D Reconstruction
Software Package(s) PURDUE PROGRAMS
Reconstruction Method(s) --
EM Image Reconstruction Statistics
Number of Particles 36
Other Details THE RESOLUTION OF THE FINAL RECONSTRUCTED DENSITY WAS DETERMINED TO BE AT LEAST 26 ANGSTROMS, AS MEASURED BY RANDOMLY SPLITTING THE PARTICLES INTO TWO SETS AND COMPARING STRUCTURE FACTORS OBTAINED FROM SEPARATE RECONSTRUCTIONS (BAKER ET AL. 1991, BIOPHYS.J. 60, 1445-1456). THE EIGENVALUE SPECTRUM GAVE AN INDICATION OF THE RANDOMNESS OF THE DATA THAT WAS INCLUDED IN THE RECONSTRUCTION. THE COMPLETENESS OF THE DATA WAS VERIFIED IN THAT ALL EIGENVALUES EXCEEDED 1.0.
Effective Resolution 26.0
EM Map-Model Fitting and Refinement
Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Fitting Software
RECIPROCAL RIGID BODY FIT VECTOR R-FACTOR -- -- --