What is the 3-antinucleotide code on tRNA called?

Anticodon. The 3-antinucleotide code on tRNA is called anticodon. In the process of translation (protein synthesis), aside ribosome and mRNA, tRNA is also required to begin the process. Transfer RNAs commonly referred to as tRNAs are RNAs that bring amino acid to the ribosome. It works to match the codon on mRNA with the amino acids that it codes for. Each tRNA carries a set of 3 nucleotides referred to as anticodon.

Anticodons bind to specific codons on the mRNA. Aminoacyl-tRNA synthetase is the enzyme that functions to load tRNA with the amino acid sequence for the codon. In the first stage of translation (initiation), the subunits of the ribosome come together with mRNA along with the first tRNA to begin the process of translation. In the second stage (elongation), tRNA brings amino acid to the ribosome, and this begins to form chains. At the end-stage (termination), the polypeptide produced is release.