FIG. 1.—
Examples of the 4 types of inferred tRNA secondary structures found in arachnids. (A) Cloverleaf structure, as found in tRNAAsn in the amblypygid Phrynus. (B) Structure lacking a D-arm, as found in tRNASer(AGN) in the amblypygid Phrynus. (C) Structure lacking a T-arm, as found in tRNAAsn in the scorpion Buthus. (D) Structure lacking both a T-arm and a well-paired aminoacyl acceptor stem, as found in tRNAAsn in the spider Aphonopelma. Note that the sequence in gray in (D) encodes the downstream gene (in this case, tRNAAla).
