How long would a hypothetical protein be that could be translated from the mRNA sequence 5ʹcap-GACGUUCCCAUGACAUCACCCGGGUUUAAUUGAAAA-polyA-3ʹ?

How long would a hypothetical protein be that could be translated from the mRNA sequence 5ʹcap-GACGUUCCCAUGACAUCACCCGGGUUUAAUUGAAAA-polyA-3ʹ?

• A. 12-amino acids long
• B. 7-amino acids long
• C. 8-amino acids long
• D. 9-amino acids long

Answer: (B)

To determine the length of a hypothetical protein that could be translated from the given mRNA sequence, we first need to focus on the coding region, which starts at the start codon (AUG) and continues until a stop codon (UAA, UAG, or UGA). The provided mRNA sequence is: 5ʹcap-GACGUUCCCAUGACAUCACCCGGGUUUAAUUGAAAA-polyA-3ʹ Identifying the start codon, we see "AUG" is present within the sequence. We then proceed to translate the sequence starting from "AUG": - The first codon after "AUG" can be determined by chunking the sequence into groups of three nucleotides. The codons following "AUG" are: - AUG (Met) - ACA (Thr) - UCA (Ser) - CCG (Pro) - GUU (Val) - UAA (Stop) Counting these codons, starting from "AUG" until we reach the stop codon "UAA," we can summarize: 1. AUG 2. ACA 3. UCA 4. CCG 5. GU

To determine the length of a hypothetical protein that could be translated from the given mRNA sequence, we first need to focus on the coding region, which starts at the start codon (AUG) and continues until a stop codon (UAA, UAG, or UGA).

The provided mRNA sequence is:

5ʹcap-GACGUUCCCAUGACAUCACCCGGGUUUAAUUGAAAA-polyA-3ʹ

Identifying the start codon, we see "AUG" is present within the sequence. We then proceed to translate the sequence starting from "AUG":

• The first codon after "AUG" can be determined by chunking the sequence into groups of three nucleotides. The codons following "AUG" are:

• AUG (Met)

• ACA (Thr)

• UCA (Ser)

• CCG (Pro)

• GUU (Val)

• UAA (Stop)

Counting these codons, starting from "AUG" until we reach the stop codon "UAA," we can summarize:

1. AUG

2. ACA

3. UCA

4. CCG

5. GU