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 pH 7.5
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
EM Data Acquisition
Date of Experiment 1993-06-01
Num of Micrographs-Images Used --
Temperature (Kelvin) 120.0
Microscope Model PHILLIPS EM240
Detector Type KODAK SO163 FILM
Minimum Defocus (nm) --
Maximum Defocus (nm) 1250.0
Minimum Tilt Angle (degrees) --
Maximum Tilt Angle (degrees) --
Nominal CS --
Imaging Mode --
Electron Dose (electrons nm**-2) 20.0
Illumination Mode --
Nominal Magnification 49000
Calibrated Magnification --
Source --
Acceleration Voltage (kV) 80
Imaging Details --
3D Reconstruction
Software Package(s)
Reconstruction Method MODEL-BASED, POLAR-FOURIER-TRANSFORM (FULLER ET AL. 1996, J.STRUC.BIOL.116, 48-55; BAKER AND CHENG, 1996, J.STRUC.BIOL. 116, 120-130)
EM Image Reconstruction Statistics
Number of Particles 36
Nominal Pixel Size 5.1
Actual Pixel Size 5.19
Effective Resolution 26.0
EM Reconstruction Magnification Callibration THE PIXEL SIZE OF THE CRYO-EM MAP WAS CALIBRATED AGAINST THE CRYO-EM RECONSTRUCTION OF THE D1D2-ICAM-1/HRV16 COMPLEX. DENSITIES WERE COMPARED BY CROSS-CORRELATION WITHIN A SPHERICAL SHELL OF INTERNAL RADIUS 110 ANGSTROMS AND EXTERNAL RADIUS 216 ANGSTROMS.
EM Map-Model Fitting and Refinement
Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Fitting Software
RECIPROCAL RIGID BODY REFINEMENT VECTOR R-FACTOR -- -- PURDUE PROGRAMS