animation
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5 |The
central dogma
of biology states that all proteins are built using information
stored on the genes of DNA.
After that information has been
transcribed
to mRNA and then presented to the
Ribosomes outside the nucleus
translation occurs.
Translation is the assembly of amino acids assisted by tRNA and peptide
bonds into polypeptides (proteins).
The genetic
code is used to determine the amino acid, and the start stop,
sequence.
Overview
1) transcription
> nuclear DNA is used as a template to build a complimentary mRNA for
export to the cytoplasm
> introns are removed from mRNA leaving behind exons
2) translation
> mRNA is released from the endoplasmic reticulum to the ribosomes where
it is translated into proteins
> tRNA is used to coordinate the assembly of specific AAs using the
genetic code
as the elongation off the polypeptide continues to termination
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Both
of the above images portray schematic description of protein synthesis. |