transfer RNA(redirected from Trna (transfer RNA))
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n. Abbr. tRNA
Any of a class of RNA molecules that transport amino acids to ribosomes for incorporation into a polypeptide undergoing synthesis.
any of a class of small, cloverleaf forms of RNA that transfer unattached amino acids in the cell cytoplasm to the ribosomes for protein synthesis.Abbr.: tRNA
See under RNA.
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|Noun||1.||transfer RNA - 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)|
ribonucleic acid, RNA - (biochemistry) a long linear polymer of nucleotides found in the nucleus but mainly in the cytoplasm of a cell where it is associated with microsomes; it transmits genetic information from DNA to the cytoplasm and controls certain chemical processes in the cell; "ribonucleic acid is the genetic material of some viruses"