The lactose permease of E. coli is a protein composed of a single polypeptide that is 417 amino acids in length. By convention, the amino acids within a polypeptide are numbered from the amino terminus to the carboxyl terminus. Are the following questions about the lactose permease true of false?
A. Since the sixty-fourth amino acid is glycine and the sixty-eighth amino acid is aspartic acid, the codon for glycine-64 is closer to the 3′ end of the mRNA compared to the codon for aspartic acid-68.
B. The mRNA that encodes the lactose permease must be greater than 12,241 nucleotides in length.
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