Some early works of TALEN use the monomer form; one peptide.
List all monomer EENs
Most of the TALENs work as dimers; two peptides.
Some TALENs consist of TALE domains and FokI domains in a reversed order (i.e.
, FokI in N-terminus); in this case, the target sites are also "reversed".
List all EENs with FokI in N-terminus