elian ▁In herit ance ▁in ▁man ▁( OM IM ) ▁Entry ▁O M IM ▁# 2 1 7 8 0 0 ▁ ▁Human ▁prote ins ▁from ▁this ▁family ▁ ▁Car bo h yd rate ▁sul f otr ans fer ases ▁ 6 ▁( CH ST 6 ) ▁Sul f otr ans fer ase ▁that ▁util izes ▁ 3 '- ph osph o - 5 '- aden y ly l ▁sul f ate ▁( P AP S ) ▁as ▁sul fon ate ▁don or ▁to ▁catal y ze ▁the ▁transfer ▁of ▁sul f ate ▁to ▁position ▁ 6 ▁of ▁non - redu cing ▁N - ac et yl gl uc os am ine ▁( G l c NA c ) ▁resid ues ▁of ▁ker atan . ▁Medi ates ▁sul f ation ▁of ▁ker atan ▁in ▁cor nea . ▁Ker atan ▁sul f ate ▁plays ▁a ▁central ▁role ▁in ▁maintain ing ▁cor ne al ▁trans par ency . ▁ ▁Car bo h yd rate ▁sul f otr ans fer ases ▁ 8 ▁( CH ST 8 ) ▁and ▁ 9 ▁( CH ST 9 ), ▁which ▁transfer ▁sul f ate ▁to ▁position ▁ 4 ▁of ▁non - redu cing ▁N - ac et yl gal act os am ine ▁( G al NA c ) ▁resid ues ▁in ▁both ▁N - gly c ans ▁and ▁O - gly c ans . ▁They ▁function ▁in ▁the ▁b ios yn thesis ▁of ▁g ly cop rote in ▁h orm ones ▁lut rop in ▁and ▁thy rot rop