Messenger RNA

Messenger RNA (mRNA) is a large family of RNA molecules that convey genetic information from DNA to the ribosome, where they specify the amino acid sequence of the protein products of gene expression. Following transcription of mRNA by RNA polymerase, the mRNA is translated into a polymer of amino acids: a protein, as summarized in the central dogma of molecular biology.

As in DNA, mRNA genetic information is encoded in the sequence of nucleotides, which are arranged into codons consisting of three bases each. Each codon encodes for a specific amino acid, except the stop codons, which terminate protein synthesis. This process of translation of codons into amino acids requires two other types of RNA: Transfer RNA (tRNA), that mediates recognition of the codon and provides the corresponding amino acid, and ribosomal RNA (rRNA), that is the central component of the ribosome's protein-manufacturing machinery.

Read more about Messenger RNA:  Synthesis, Processing, and Function, Degradation

Famous quotes containing the word messenger:

    O you singers solitary, singing by yourself, projecting me,
    O solitary me listening, never more shall I cease perpetuating you
    Never more shall I escape, never more the reverberations,
    Never more the cries of unsatisfied love be absent from me,
    Never again leave me to be the peaceful child I was before what
    there in the night,
    By the sea under the yellow and sagging moon,
    The messenger there aroused, the fire, the sweet hell within,
    The unknown want, the destiny of me.
    Walt Whitman (1819–1892)