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Table 1 Correspondence between RNA- and IEP-based classes

From: Evolution of group II introns

IEP-based classes a RNA structure-based classes b
IIA IIB IIC
A X   
B   X  
C    X
D   X  
E   X  
F   X  
ML X   
CL   X  
  1. 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.