it appears that the 5'-domain ( equivalent to 5.8s rrna of eukaryotic ribosomes ) as well as the 3'-domain ( equivalent to 4.5s rrna of chloroplast ribosomes ) have a compact and defined tertiary structure in isolated 23s rrna in contrast to the rrna region in between .
C0035553
ribosomes
C0035701
rrna