Prokaryotic translation is the process by which messenger RNA is translated into
proteins in ... The P site is where the peptidyl tRNA is formed in the ribosome. ...
The 30S subunit binds to the mRN...
60) As a ribosome translocates along an mRNA molecule by one codon, which of
the following occurs? A) The tRNA that was in the A site moves into the P site.
Each amino acid is specified by three bases (a codon) in the mRNA, ... between
three types of RNA molecules (mRNA templates, tRNAs, and rRNAs), as well as
... Each ribosome contains one copy of the rRNAs and one copy of each of the ....
but when they occur at the beginning of a polypeptide chain, these codons direct
However, most genes in a cell produce mRNA molecules that serve as ... One of
these regions forms the anticodon, a set of three consecutive nucleotides that
pairs .... A second discrimination step occurs after the amino acid has been ..... is
first loaded into the small ribosomal subunit along with additional proteins called
的數目不及mRNA codons 的數目，故答案應為(E)。 試題評析. 1.此份試題比去年 .....
Which of the following substances does a cytotoxic T cell secrete to destroy a .... (
E) Active gene transcription occurs in the heterochromatic regions of the nucleus.
... As a ribosome translocates along an mRNA molecule by one codon, which ...
Feb 19, 2015 ... Highlights d. Ribosome translocation excursions occur before adopting a ... not
one specific codon but various codons along the ... to translocate one codon
forward (Rodnina and Wintermeyer, ... of these elements on the mRNA relative to
the .... Here, an mRNA hairpin molecule—bound with a single ribo-.
Mar 9, 2008 ... Following translation by single ribosomes one codon at a time ... Here we reveal
that translation occurs through successive translocation-and-pause cycles. ... of a
single hairpin-forming mRNA molecule by a single ribosome. ... RNA; thus, each
base translocated requires the breaking of a base pair, which ...
In E. coli, this complex involves the small 30S ribosome, the mRNA template,
three ... Methionine is one of the 21 amino acids used in protein synthesis; ...
complex slides along the mRNA until it encounters the initiator AUG codon. ...
Termination of translation occurs when the ribosome moves over a stop codon (
UAA, UAG, ...
These notes will focus on structural aspects, and on protein factors involved in
initiation, ... Reactivation occurs by release of bound GDP in exchange for GTP. ...
This positions the small ribosomal subunit in relation to the initiation codon. .....
After the initiation complex assembles, it translocates along the mRNA in a
ribosome. Once the tRNAs are released it. dissociates from the ribosome. A
strand of mRNA is ... is responsible for translocating the. ribosome one codon unit
along the mRNA. after each peptidyl ... tRNA charging occurs in two steps,.
adenylylation and .... molecule of GTP, re-generating GTP-containing. EF-Tu,
which is ...