tRNA

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Definition

Noun: 1. Transfer RNA: A type of RNA molecule that functions as an adaptor during protein synthesis. It carries a specific amino acid to the ribosome and matches it to the corresponding codon on the messenger RNA (mRNA) strand, ensuring the correct sequence of amino acids in the growing protein chain.

Examples of Usage
  • Noun:
    • Each tRNA molecule has an anticodon that binds to a complementary codon on the mRNA.
    • The enzyme aminoacyl-tRNA synthetase attaches the correct amino acid to its specific tRNA.
    • Without tRNA, the genetic code in mRNA could not be translated into a functional protein.
Advanced Usage
  • "charged tRNA": A tRNA molecule that has been covalently linked to its specific amino acid, making it ready for protein synthesis.
    • A charged tRNA enters the A site of the ribosome.
  • "tRNA synthetase": The enzyme responsible for attaching an amino acid to its corresponding tRNA molecule.
    • The accuracy of translation depends heavily on the specificity of tRNA synthetases.
Variants and Related Words
  • Transfer RNA: The full name for tRNA.
  • Aminoacyl-tRNA: A synonym for a charged tRNA molecule.
  • mRNA (messenger RNA): The RNA that carries the genetic code from DNA to the ribosome.
  • rRNA (ribosomal RNA): The RNA that forms the core structure and catalytic sites of the ribosome.
Synonyms
  • Soluble RNA (sRNA): An older, less common term for tRNA.
  • Adaptor RNA: A descriptive synonym highlighting its function as a molecular adaptor between amino acids and codons.
Related Phrases
  • "tRNA anticodon": The sequence of three nucleotides on a tRNA molecule that base-pairs with a specific codon on mRNA.
    • The tRNA anticodon ensures precise matching during translation.
  • "tRNA gene": The DNA sequence that encodes a particular tRNA molecule.
    • The human genome contains hundreds of tRNA genes.
Noun
  1. RNA molecules present in the cell (in at least 20 varieties, each variety capable of combining with a specific amino acid) that attach the correct amino acid to the protein chain that is being synthesized at the ribosome of the cell (according to directions coded in the mRNA)

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