Elongation factors

From WikiMD's Wellness Encyclopedia

Elongation factors are a set of proteins that facilitate the synthesis of protein in ribosomes during the process of translation. They are part of the larger group of protein biosynthesis factors.

Function[edit | edit source]

Elongation factors play a crucial role in the elongation phase of protein biosynthesis. They assist in the synthesis of the polypeptide chain by adding amino acids to the growing chain. This process continues until a stop codon is reached on the mRNA molecule.

There are three main types of elongation factors:

  • EF-Tu (or EF1 in eukaryotes): This factor binds to an aminoacyl-tRNA (a tRNA molecule with an amino acid attached) and brings it to the A site of the ribosome.
  • EF-Ts (or EF1B in eukaryotes): This factor regenerates EF-Tu in bacteria after it has delivered its aminoacyl-tRNA to the ribosome.
  • EF-G (or EF2 in eukaryotes): This factor promotes the translocation of the tRNA and mRNA down the ribosome at the end of each round of polypeptide elongation.

Role in Disease[edit | edit source]

Mutations in elongation factors can lead to various diseases. For example, mutations in the EF2 gene have been associated with cancer and neurodegenerative diseases.

See Also[edit | edit source]

References[edit | edit source]


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