1. Tardigrade
  2. Question
  3. Biology
  4. In E. coli, a finished polypepride has 162 amino acids of which the first amino acid is not a methionine compound. How many nucleotides of DNA are required to code this polypeptide?

Q. In E. coli, a finished polypepride has 162 amino acids of which the first amino acid is not a methionine compound. How many nucleotides of DNA are required to code this polypeptide?

 1367  237 EAMCETEAMCET 2006 Report Error

Solution:

There is an intimate connection between genes and synthesis of polypeptides or enzymes. The relationship between the sequence of amino acids in a polypeptide and nucleonde sequence of DNA or m-RNA is called genetic code. To code a polypeptide of 162 amino acids 486 nucieotides required but here methionine absent therefore 489 nucieotides required and methonine may remove from polypeptide later.