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 is : (a) Ser-UCU, Leu-CUC, Arg-AGA, Glu-GAG

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 (a) is the correct interpretation of the assigned amino acids.

Ser-UCU, Leu-CUC, Arg-AGA, Glu-GAG