Question

In an in vitro translation experiment, poly (UC) RNA template produced poly (Ser-Leu), while poly (AG) RNA template produced poly (Arg-Glu) polypeptide. Which one of the following options represents correct interpretations of the codons assignments for Ser, Leu, Arg and Glu?

• A. Ser-UCU, Leu-CUC, Arg-AGA, Glu-GAG
• B. Ser-CUC, Leu-GAG, Arg-UCU, Glu-AGA
• C. Ser-AGA, Leu-UCU, Arg-GAG, Glu-CUC
• D. Ser-GAG, Leu-AGA, Arg-CUC, Glu-UCU

Answer 1

Answer: (A)

Serine is coded by UCU, UCC, UCA, UCG, AGU, AGC
Leucine is coded by CUU, CUC, CUA, CUG, UUA, UUG
Arginine is coded by AGA, AGG, CGU, CGC, CGA, CGG
Glutamic acid is coded by GAA, GAG
Therefore, option is the correct interpretation of the assigned amino acids.
Ser-UCU, Leu-CUC, Arg-AGA, Glu-GAG