Question

 

Write a detailed note on eukaryotic translation.

23 Jan 2025
Answer :
Word Count : 679

Eukaryotic translation is the process by which messenger RNA (mRNA) is decoded by ribosomes to synthesize proteins. This occurs in the cytoplasm, although the mRNA is initially transcribed in the nucleus. Translation in eukaryotic cells is a complex, multi-step process that involves several key molecules, including mRNA, ribosomes, transfer RNA (tRNA), various initiation, elongation, and release factors, as well as energy molecules like ATP and GTP. The process can be broken down into three main stages: initiation, elongation, and termination.

### 1. Initiation
The initiation phase begins when the mRNA is transported from the nucleus to the cytoplasm. Before translation, the mRNA is processed with a 5' cap and a poly-A tail, which are essential for stability and efficient translation. The ribosome, which is composed of two subunits (large and small), assembles on the mRNA to begin translation.

The small ribosomal subunit binds to the 5' cap of the mRNA. In eukaryotes, this is typically facilitated by initiation factors such as eIF4E and eIF4G. These initiation factors also __________ _________ ___ ____ _______ __________ _________ _______ _____ _____.
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