3. The central dogma of molecular biology
describes the flow of genetic information in an organism. Number
the descriptions below in the proper order, from the
earliest event (1) to the latest event (8) in the
expression of the GFP gene in bacteria. Assume that transcription
is completed prior to translation. Hint: Reference Fig. 4.17
from “How Life Works” textbook to review translation section.
[8 pts]
_____ GFP folds into
complete tertiary structure and exhibits fluorescence.
_____
tRNAMet recognizes the AUG start codon.
_____ Methionine
detaches from tRNAMet during peptide bond formation.
_____ RNA Polymerase
recognizes a terminator, releasing full-length GFP mRNA.
_____ Full-length GFP
is produced and ribosome disassociates from mRNA template.
_____ RNA Polymerase
binds to the GFP DNA promoter and initiates transcription.
_____ The ribosome
encounters a UAA codon and a release factor binds the “A” site.
_____ An uncharged
tRNA (formerly tRNAMet) is ejected from the “E”
site.