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The most abundant type of RNA.
Together with proteins, it forms the
structure of ribosomes
A family of enzymes, at least one for
each amino acid, that catalyzes the
attachment of an amino acid to its
specific tRNA molecule
Aminoacyl tRNA Synthetase
The coding region of a eukaryotic
gene that is expressed. Exons are
separated from each other by introns.
A cell organelle constructed in the
nucleolus, consisting of two subunits
and functioning as the site of protein
synthesis in the cytoplasm
A specific nucleotide sequence in
DNA, flanking the start of a gene;
instructs RNA polymerase where to
start transcribing RNA
An enzyme that links together the
growing chain of ribonucleotides
A specialized base triplet on one end
of a tRNA molecule that recognizes a
particular complementary codon on
an mRNA molecule
The transfer of information from an
RNA molecule into a polypeptide,
involving a change of language from
nucleic acids to amino acids.
A type of RNA that attaches to
ribosomes in the cytoplasm and
specifies the primary structure of a
A three-nucleotide sequence of DNA
or mRNA that specifies a particular
amino acid or termination signal; the
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