Chi-conotoxins inhibit the neuronal noradrenaline transporter (NET/SLC6A2). Expressed by the venom duct. The cysteine framework is X (CC-CX[hydroxyPro]C). Contains 2 disulfide bonds. With pyroglutamate at Gln-1. Without pyroglutamate at Gln-1. Belongs to the conotoxin T superfamily.