Figure 2
From: Evidence from glycine transfer RNA of a frozen accident at the dawn of the genetic code
Glycine tRNA consensus sequences showing canonical intron insertion position. (A) Anticodon arm consensus sequence from 466 glycine tRNA genes from eubacteria, archaea and eukaryote cytoplasm taken from [13]. Note: T has been changed to U for the purpose of showing RNA sequence. Adapted from an image generated by WebLogo software [40]. (B) Cloverleaf consensus sequence of 136 mammalian mitochondrial glycine tRNA gene sequences taken from [14]. In the anticodon loop: conserved in 100% of sequences designated by green squares (e.g. C35, A37); in > 90% of sequences by blue squares (e.g. C36); in > 50% of sequences by the open square. Note: 3'-CCA terminus is not displayed. T has not been changed to U in this depiction.