1. exhibit a cloverleaf-like secondary structure.
2. have a 5'-terminal phosphate.
3. have a 7 bp stem that includes the 5'-terminal
nucleotide and may contain non-Watson-Crick
base pairs, e.g. GU. This portion of
the tRNA is called the acceptor since the amino acid is carried by the tRNA while attached to the
3'-terminal OH group.
4. have a D loop and a TpsiC loop.
5. have an anti-codon loop.
6. terminate at the 3'-end with the sequence 5'-CCA-3'.
7. contain 13 invariant positions and 8 semi-variant positions.
8. contain numerous modified nucleotide bases.