1FCW

TRNA POSITIONS DURING THE ELONGATION CYCLE


ELECTRON MICROSCOPY
Sample
tRNA-Ribosome complex
Specimen Preparation
Sample Aggregation StatePARTICLE
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles15610
Reported Resolution (Å)17
Resolution MethodFSC 3 SIGMA CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
DetailsDETAILS--TRNA COORDINATES (TRNA09) WERE FIT INTO CRYO-EM MAP AS RIGID BODIES THE RELATIVE POSITIONS OF THE TRNA IS DERIVED BY FITTING THE X-RAY STRUC ...DETAILS--TRNA COORDINATES (TRNA09) WERE FIT INTO CRYO-EM MAP AS RIGID BODIES THE RELATIVE POSITIONS OF THE TRNA IS DERIVED BY FITTING THE X-RAY STRUCTURE OF TRNA (TRNA09) INTO THE THREE-DIMENSIONAL CRYO-ELECTRON MICROSCOPY MAPS OF FUNCTIONAL COMPLEXES OF THE E. COLI 70S RIBOSOMES. IT SHOULD BE NOTED THAT ALL TRNA-BINDING POSITIONS ARE NOT OCCUPIED SIMULTANEOSLY. THEREFORE, THERE ARE OVERLAPS BETWEEN THE TWO TRNA COORDINATES. IN ORDER TO SEE THE RELATIVE POSITIONS OF VARIOUS RIBOSOMAL DOMAINS, CHAIN C (THE P-SITE TRNA) SHOULD BE ALIGNED WITH OUR EARLIER DEPOSITED P-SITE POSITION (ID CODE 1EGO).
Data Acquisition
Detector TypeGENERIC FILM
Electron Dose (electrons/Å**2)10
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI/PHILIPS EM420
Minimum Defocus (nm)1200
Maximum Defocus (nm)2200
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging ModeBRIGHT FIELD
Specimen Holder ModelGATAN 626 SINGLE TILT LIQUID NITROGEN CRYO TRANSFER HOLDER
Nominal Magnification52200
Calibrated Magnification
SourceOTHER
Acceleration Voltage (kV)
Imaging Details