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Tweak language and formatting in protein-translation/description.md #2558

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2154eeb
Tweak language and formatting in `protein-translation/description.md`
codingthat Apr 23, 2025
c60eff9
Merge branch 'exercism:main' into patch-1
codingthat Apr 28, 2025
15708f6
Further improvements per http://forum.exercism.org/t/tweak-language-a…
codingthat Apr 28, 2025
4909504
Table fixes as recommended by linter CI check
codingthat Apr 28, 2025
56e00b4
Change bracketed "Note:" to "In other words," and restore "64 codons"…
codingthat May 9, 2025
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29 changes: 9 additions & 20 deletions exercises/protein-translation/description.md
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Translate RNA sequences into proteins.

RNA can be broken into three-nucleotide sequences called codons, and then translated to a protein like so:
You can break an RNA strand into three-nucleotide sequences called codons and then translate them into amino acids to make a protein like so:

RNA: `"AUGUUUUCU"` => translates to
| RNA | Three-letter codons | Amino acids |
| ----------- | ------------------- | --------------------------------------- |
| "AUGUUUUCU" | "AUG", "UUU", "UCU" | "Methionine", "Phenylalanine", "Serine" |

Codons: `"AUG", "UUU", "UCU"`
=> which become a protein with the following sequence =>
There are also three STOP codons. If you encounter any of these codons, ignore the rest of the sequence — the protein is complete. For example, UAA is a STOP codon, so ignore any subsequent codons:

Protein: `"Methionine", "Phenylalanine", "Serine"`
| RNA | Three-letter codons | Amino acids |
| ----------------- | --------------------------------- | --------------------------------------- |
| "AUGUUUUCUUAAAUG" | "AUG", "UUU", "UCU", "UAA", "AUG" | "Methionine", "Phenylalanine", "Serine" |

There are 64 codons which in turn correspond to 20 amino acids; however, all of the codon sequences and resulting amino acids are not important in this exercise.
If it works for one codon, the program should work for all of them.
However, feel free to expand the list in the test suite to include them all.

There are also three terminating codons (also known as 'STOP' codons); if any of these codons are encountered (by the ribosome), all translation ends and the protein is terminated.

All subsequent codons after are ignored, like this:

RNA: `"AUGUUUUCUUAAAUG"` =>

Codons: `"AUG", "UUU", "UCU", "UAA", "AUG"` =>

Protein: `"Methionine", "Phenylalanine", "Serine"`

Note the stop codon `"UAA"` terminates the translation and the final methionine is not translated into the protein sequence.
(Note that the latter AUG is not translated into another methionine.)

Below are the codons and resulting amino acids needed for the exercise.

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