Beginner Exercism • javascript

Protein Translation

Challenge Overview

Your job is to translate RNA sequences into proteins.

Source: Exercism javascript/protein-translation

💡 View Solution

export const translate = (rna = '') => {
  const map = { AUG: 'Methionine', UUU: 'Phenylalanine', UUC: 'Phenylalanine', UUA: 'Leucine', UUG: 'Leucine', UCU: 'Serine', UCC: 'Serine', UCA: 'Serine', UCG: 'Serine', UAU: 'Tyrosine', UAC: 'Tyrosine', UGU: 'Cysteine', UGC: 'Cysteine', UGG: 'Tryptophan', UAA: 'STOP', UAG: 'STOP', UGA: 'STOP' };
  const proteins = [];
  for (let i = 0; i < rna.length; i += 3) {
    const codon = rna.slice(i, i + 3);
    const protein = map[codon];
    if (!protein) throw new Error('Invalid codon');
    if (protein === 'STOP') break;
    proteins.push(protein);
  }
  return proteins;
};