Table 2. Potential tertiary interactions in the mitochondrial tRNAs, tRNA^Trp, tRNA^Lys and tRNA^Leu(CUN) of Caretta caretta.

Interaction number	1	2	3	4	5	6	7
Nucleotide positions	15–48	(8–14)–21	(13–22)–46	9–(23–12)	24–11	(25–10)–45	26–44
1Canonical	R–Y	(A–U)–A	(N–N)–R	R–(R–Y)	N–N	(N–N)–N	R–R
Trp	A–C*	(U–U)–A*	(U–A)–A*	A–(A•A)	C–G	(C–G)–A	A–A
Lys	A–A	(A–A)–A*	(A–U)–A	A–(A–U)	G–C	(C–G)–A	G–A
LeuCUN	G–C*	(A–A)–A*	(U–A)–A*	A–(U–A)	C–G	(C–G)–A	A–G

Notes:

Italics letters, nucleotides that do not match with those reported for the same interaction in canonical tRNA.

• Non-canonical pair identified in the 2D structure.

^*, Interaction partially supported in the tertiary structure.

¹R, Purines; Y, Pyrimidine; N, any nucleotide.