Transfer Rna Definition. In the second step elongation each amino acid is sequentially connected by peptide bonds forming a polypeptide chain. Transfer rna trna is a small rna molecule that participates in protein synthesis.
The genetic code is determined by trnas which serve as a connection between amino acids and nucleic acids. The ribosome assembles a protein in three steps during initiation the first step transfer rna trna brings the specific amino acid designated by the three letter code to the ribosome. Trna molecule is a carrier of amino acid that brings appropriate amino acid to ribosome based on the codon present in mrna sequence.
Typically a trna molecule is composed of about 76 to 90 rna nucleotides.
Soluble rna see also messenger rna genetic code. The cell uses rna for a number of different tasks one of which is called messenger rna or mrna. Transfer rna trna is a small rna molecule that participates in protein synthesis. Soluble rna see also messenger rna genetic code.