Linker Elements

Linker elements connect functional protein domains or enable multi-gene expression from single transcripts. Flexible peptide linkers allow independent domain folding in fusion proteins, while self-cleaving 2A sequences produce separate polypeptides at near-stoichiometric ratios through ribosomal skipping.

NameTypeCleavage Efficiency
3xGGGGS flexible_linker —
3xGS flexible_linker —
E2A Self-Cleaving Peptide 2a_peptide high
E2A (Drosophila) 2a_peptide —
EK Site protease_site —
F2A Self-Cleaving Peptide 2a_peptide moderate
Factor Xa Site protease_site —
HRV3C Site protease_site —
IRES ires —
P2A Self-Cleaving Peptide 2a_peptide very_high
P2A (Drosophila) 2a_peptide —
T2A Self-Cleaving Peptide 2a_peptide very_high
T2A (Drosophila) 2a_peptide —
TEV Site protease_site —
Thrombin Site protease_site —
Ubx IRES ires —