lähettiRNAmolekyylin
lähettiRNAmolekyylin, often abbreviated as mRNA, is a type of ribonucleic acid molecule that carries genetic information from DNA to the ribosome, where it serves as a template for protein synthesis. In the process of transcription, a specific segment of DNA, known as a gene, is copied into a complementary mRNA sequence. This mRNA molecule then detaches from the DNA and travels to the cytoplasm. Once at the ribosome, the sequence of nucleotides in the mRNA is read in groups of three, called codons. Each codon specifies a particular amino acid, or a signal to start or stop protein synthesis. Transfer RNA (tRNA) molecules bring the corresponding amino acids to the ribosome, matching them to the codons on the mRNA. This precise pairing ensures that the amino acids are assembled in the correct order to form a functional protein. The mRNA molecule itself is relatively short-lived and is eventually degraded after its genetic message has been translated.