post·trans·la·tion·al 
(pōst′trăns-lāshə-nəl, -trănz-)
(pōst′trăns-lāshə-nəl, -trănz-)adj.
Of or relating to a substance or process, such as the addition of sugar groups to form a glycoprotein, that occurs or is formed after translation of protein: a posttranslational modification.