Charging an uncharged tRNA involves a two-step reaction that forms a bond between the carboxyl group of the amino acid and the 3’ hydroxyl group of adenine in the CCA terminus. This reaction is catalyzed by enzymes called aminoacyl-tRNA synthetase. How many different aminoacyl-tRNA synthetases are required by a cell?

0 votes

 

  

20, one for each amino acid

  

61, one for each codon that does not include the 3 stop codons

  

64, one for each codon

  

4, one for each type of nucleotide base

 

asked May 15, 2013 in Genetics by GeneX ~Top Expert~ (7,947 points)
    

1 Answer

0 votes
 
Best answer

20, one for each amino acid

answered May 15, 2013 by GeneX ~Top Expert~ (7,947 points)

Related questions

0 votes
1 answer 203 views



...