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Biochemistry General 3f95d1b3

What is the codon for selenocysteine?

A
UAG
B
UGA
C
UAA
D
GUA
High-Yield Explanation
Ans: B. UGA(Ref Harper 30/e p18, 286)Selenocysteine:Commonly termed "21st amino acid".Present in biological proteins.Not coded directly in genetic code.Instead encoded by a UGA codon.UGA codon - Normally a stop codon.This mechanism called as|"translational recoding".

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