Major component of Woronin bodies, fungal-specific organelles that occlude septal pores in order to separate intact from damaged compartments (PubMed:10783241). Hex1 binds directly or indirectly to the Woronin body tether that in turn is anchored at the rim of the septal pore (PubMed:10783241). Forms oligomers (By similarity). Self-assembles into hexagonal rods (By similarity). Localizes at Woronin bodies, fungal-specific organelles that plug the septal pore in case of physical damage. Belongs to the eIF-5A family. Hex1 subfamily.