In: Biology
briefly describe the events in translation
Translation is the process of protein synthesis and encoding of genetic information in mRNA. In translation, mRNA is decoded in a ribosome, outside the nucleus, to produce a specific amino acid chain, or polypeptide. The ribosome helps in decoding by inducing the binding of complementary tRNA anticodon sequences to mRNA codons.
There are following three events of translation
1) Initiation: During initiation, the small ribosomal subunit binds to the start of the mRNA sequence. Then a tRNA molecule binds to the start codon of the mRNA sequence. The start codon has the sequence AUG and codes for methionine. Next, the large ribosomal subunit binds to form the complete initiation complex.
2) Elongation: During this stage, the ribosome continues to translate each codon in turn. Elongation continues until all of the codons are read. The ribosome then moves to the next mRNA codon to continue the process. It creates a chain of amino acid.
3) Termination: Termination occurs when the ribosome reaches a stop codon. The new protein is then released, and the translation stops.