The protein sequence is THERIGHTREADINGFRAME
It is 20 amino acids, and therefore, you will need 60 bases to encode it. So....
Protein Seq: T H E R I G H T R E A D I N G F R A M E
DNA Seq: ACNCAYGARMGNATHGGNCAYACNMGNGARGCNGAYATHAAYGGNTTYMGNGCNATGGAR
Full DNA: ACACACGAACGAATAGGACACACACGAGAAGCAGACATAAACGGATTCCGAGCAATGGAA
T T G T C T T T T G T T C T T T T T G
G G T C G G C T C G C
C C G C C G G C G
AGG AGG AGG
A A A
Number codons: 4 2 2 6 3 4 2 4 6 2 4 2 3 2 4 2 6 4 1 2
So, 4 x 2 x 2 x 6 x 3 x 4 x 2 x 4 x 6 x 2 x 4 x 2 x 3 x 2 x 4 x 2 x 6 x 4 x 1 x 2 = 2,038,431,744 or 2 x 109 possible DNA sequences would encode the protein sequence.This is a big number; however, compared to the total number of possible DNA sequences you could have for a 60-base sequence, it is small.
The total number of DNA sequences you could have for a 60 base sequence is 4 x 4 x 4.... sixty times, or 460, which is equal to 1.3 x 1036 possible sequences. Of those 1.3 x 1036 sequences only 2,038,431,744 would encode THERIGHTREADINGFRAME. Or in percentage terms, (2,038,431,744 / 1.3 x 1036) x 100 = 0.0000000000000000000000002% (2 x 10-25%) of all the possible sequences would encode THERIGHTREADINGFRAME.
You may find the following video useful where I explain the above:
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Additional Resources
- 📗 - Biochemistry (Stryer) (affiliate link)
- 📗 - Principles of Biochemistry (Lehninger) (affiliate link)
- 📗 - Molecular Biology of the Cell (Alberts) (affiliate link)
- 📗 - Molecular Cell Biology (Lodish) (affiliate link)
- 📗 - Maths and Chemistry Refresher for Life and Biomedical Scientists
- 📗 - Catchup Chemistry (affiliate link)
- 📗 - Catchup Maths and Stats (affiliate link)
