The
mammalian mitochondrial genomes contain ONE gene for each tRNA, with the exceptions
of tRNA Leucine and tRNA Serine for which TWO genes are present
Three-dimensional structure of a classical tRNA, e.g. yeast tRNA Aspartate
(Moras, D et al. (1980), Nature, 288, pp 669-674). The color code defines the various domains of the secondary cloverleaf
structure.