Transfer Rna Molecules. A transfer rna trna is a special kind of rna molecule. Mrna are simple strands of dna that store the genetic information for transient period whereas trna are much complex and appear as clover shaped looped structure.
Two different molecules are shown here phenylalanine trna pdb entry 4tna and aspartate trna pdb entry 2tra. There is at least one trna for each of the twenty naturally occurring amino acids. It takes amino acids with it and transports it through the cytoplasm to the ribosomal rna rrna present on ribosomes.
Its unique shape contains an amino acid attachment site on one end of the molecule and an anticodon region on the opposite end of the amino acid attachment site.
Definition of trna transfer rna or trna is a type of rna molecule that helps to decode information present in mrna sequences into specific proteins. Messenger rna mrna and ribosomal rna rrna. Transfer rna a short chain ribonucleic acid molecule present in cells in at least 20 different varieties each capable of combining with a specific amino acid and positioning it appropriately in a polypeptide chain that is being synthesized in a ribosome. By 1960 the involvement of trnas in the assembly of.