anticodon

The trinucleotide sequence complementary to a codon found in one loop of a tRNA molecule; e.g., if a codon is A-G-C, its anticodon is U (or T)-C-G. The complementarity principle arises from Watson-Crick base-pairing, in which A is complementary to U (or T) and G is complementary to C. Sometimes called “nodoc”.