how is the amino acid sequence?

Question

Write the amino acid sequence on the polypeptide chain that is coded for the following sequence on DNA: TAC-TGT-TTT-CCT-CCC-CGT-ATA-TGA-GGG-ACT

Answer 1

A DNA sequence is transcribed to mRNA, which is translated into protein. DNA is comprised of a coding strand and a template strand, where each nucleic acid in the template strand is the complementary to the nucleic acid in the coding strand. Since mRNA is made from the coding strand, it has the same information as the template strand from DNA, except that RNA contains U (uridine) rather than T.

Every triplet of mRNA, which is called a codon, has a corresponding amino acid. Using the (almost) universal genetic code (see link below), the amino acid sequence for the above DNA sequence is the following:

#. Amino Acid (DNA sequence → RNA sequence)

1. Methionine (tac → aug)
2. Threonine (tgt → aca)
3. Lysine (ttt → aaa)
4. Glycine (cct → gga)
5. Glycine (ccc → ggg)
6. Alanine (cgt → gca)
7. Tyrosine (ata → uau)
8. Threonine (tg? → ac?)