IEP-based classes
a
|
RNA structure-based classes
b
|
---|
IIA
|
IIB
|
IIC
|
---|
A | X | Â | Â |
B | Â | X | Â |
C | Â | Â | X |
D | Â | X | Â |
E | Â | X | Â |
F | Â | X | Â |
ML | X | Â | Â |
CL | Â | X | Â |
-
aClasses of introns based on phylogenetic groupings of the IEPs. bClasses of introns based on ribozyme secondary structure characteristics. CL, chloroplast-like; ML, mitochondrial-like.