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Where do transcription and translation occur inside a living cell? Briefly describe the three steps involved in the process of translation ? |
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Answer»
Translation ▪ Translation is the process of synthesis of protein from mRNA with the help of ribosome. ▪ A translational unit in mRNA from 5' → 3' comprises of a start codon, region coding for a polypeptide, a stop codon and untranslated regions (UTRs) at both 5'-end and 3'-end for efficient process. ▪ There are three stages of protein synthesis: i. Initiation • Assembly of ribosome on mRNA. • Activation of amino acids and its delivery to tRNA ii. Elongation • Repeated cycle of amino acid delivery. • Peptide bond formation and movement along the mRNA called translocation. iii. Termination • The release of a polypeptide chain. |
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