rane ▁binding ▁prote ins , ▁and ▁ad hes ion ▁mole cules . ▁ ▁G ST s ▁ ▁G ST s ▁catal y ze ▁sul f ation ▁at ▁the ▁ 6 - h ydro x yl ▁group ▁of ▁gal act ose , ▁N - ac et yl gal act os am ine , ▁or ▁N - ac et yl gl uc os am ine . ▁Like ▁he par an ▁sul f otr ans fer ases , ▁G ST s ▁are ▁responsible ▁for ▁post - trans l ational ▁protein ▁sul f ation ▁that ▁ass ists ▁in ▁cell - sign aling . ▁G ST s ▁are ▁also ▁responsible ▁for ▁the ▁sul f ation ▁of ▁ext rac ell ular ▁matrix ▁( EC M ) ▁prote ins ▁that ▁assist ▁with ▁maintain ing ▁the ▁structure ▁between ▁cells ▁For ▁example , ▁G ST s ▁catal y ze ▁the ▁sul f ation ▁of ▁g ly cop rote ins ▁displaying ▁the ▁L - select in ▁binding ▁ep ito pe ▁ 6 - s ul fo ▁s ial yl ▁Lewis ▁x , ▁which ▁rec ruits ▁le uk ocy tes ▁to ▁areas ▁of ▁chron ic ▁infl amm ation . ▁G ST s ▁are ▁also ▁responsible ▁for ▁the ▁proper ▁function ▁of ▁the ▁EC M ▁in ▁the ▁cor nea ; ▁impro per ▁sul f ation ▁by ▁G ST s ▁can ▁lead ▁to ▁op aque ▁cor ne as . ▁ ▁D ise ase ▁Re lev ance ▁ ▁Car bo h yd rate ▁sul f otr ans fer ases ▁are ▁of ▁great ▁interest ▁as ▁drug ▁targets ▁because ▁of