The Structure of RNA
Introduction to RNA
At the end of this lesson, you will be
able to:
• Define RNA
• List the types of RNA
• Differentiate the types of RNA
• Describe the structure
and
function of a messenger RNA
(mRNA)
RNA and Its Types
mRNA
rRNA
tRNA
Messenger RNA, that is mRNA
is one that carries code from
DNA to ribosomes for the
protein synthesis.
Ribosomal RNA, that is rRNA is
one that assembles amino acids
that are brought by tRNA in a
specific order from mRNA to
make proteins.
Transfer RNA, that is tRNA is
one that helps in transporting
specific
amino
acid
to
ribosomes
for
the
protein
synthesis process.
Around
5%
of
the
total
These are made up of RNA from
available RNAs are mRNA.
the nucleolus
mRNA
rRNA
tRNA
Messenger RNA, that is mRNA
is one that carries code from
DNA to ribosomes for the
protein synthesis.
Ribosomal RNA, that is rRNA is
one that assembles amino acids
that are brought by tRNA in a
specific order from mRNA to
make proteins.
Transfer RNA, that is tRNA is
one that helps in transporting
specific
amino
acid
to
ribosomes
for
the
protein
synthesis process.
Around
5%
of
the
total
These are made up of RNA from
available RNAs are mRNA.
the nucleolus
Structure and Function of
mRNA
AUG ACG GAG CUU CGG AGC
AUG ACG GAG CUU CGG
AGC
AUG ACG GAG CUU CGG AGC UAG
Codes for a
start codon
Codes for a stop
codon
Gene expression
mRNA localization
Translation efficiency
Gene expression
Translation efficiency
UTRs
mRNA localization
RNA stability
Monocistronic
Polycistronic
The information which is
present in a DNA molecule
will be
translated into a
major protein that is needed
by our cells by the action of
mRNA
The central dogma is the
transmission
of
genetic
information
from
DNA
through RNA to protein. An
mRNA serves as a bridge
between DNA and proteins
since
DNA
cannot
be
transcribed directly
to
proteins.
Conclusion
Summary
5 % of total available RNA