hüdrofoobne aminohappejärjestus, mis peatab polüpeptiidahela transpordi läbi tsütoplasmavõrgustiku membraani, mille tulemusel ankurdub valk membraani, A hydrophobic amino acid sequence that stops the transfer of the polypeptide chain through the endoplasmatic reticulum membrane and anchors the polypeptide into the membrane.