Mitochondrial small ribosomal RNA structure. Predicted secondary structure of the mitochondrial small ribosomal unit (12S rRNA) of “Metacrangonyx boveii” based on that estimated for Artemia franciscana. Nucleotide conservation across metacrangonyctid species derived from multiple sequence alignments performed with PRALINE is depicted with different colours. Positions conserved relative to Artemia franciscana are denoted with a circle. Red lines and boxes show positions deduced to be involved in tertiary folding. Different domains are labelled with roman numerals.