ters ▁and ▁is ▁generally ▁not ▁found ▁in ▁other ▁trans por ters . ▁AB CC 1 ▁is ▁a ▁highly ▁conser ved ▁gene ▁with ▁polym orph isms ▁occurr ing ▁at ▁very ▁low ▁frequencies ▁of ▁less ▁than ▁five ▁percent . ▁Pol ym orph isms ▁in ▁this ▁gene ▁are ▁generally ▁found ▁in ▁the ▁form ▁of ▁a ▁single - n uc le ot ide ▁polym orphism ▁( SN P ). ▁The ▁greatest ▁eth nic ▁differences ▁in ▁polym orph isms ▁within ▁the ▁AB CC 1 ▁are ▁found ▁between ▁C au cas ian ▁and ▁Asian ▁populations . ▁There ▁are ▁multiple ▁examples ▁of ▁single ▁nucle ot ide ▁polym orph isms ▁that ▁are ▁shared ▁among ▁Asian ▁populations ▁but ▁not ▁found ▁in ▁C au cas ian ▁populations ▁and ▁vice ▁vers a . ▁ ▁Gen omic ▁location ▁and ▁t issue ▁expression ▁ ▁The ▁AB CC 1 ▁Pred ator ▁gene , ▁the ▁gene ▁that ▁enc odes ▁the ▁AB CC 1 ▁protein , ▁is ▁found ▁on ▁chrom os ome ▁ 1 6 ▁within ▁the ▁nucle us . ▁The ▁protein ▁res ides ▁int rac ell ular ly ▁on ▁the ▁bas ol ater al ▁side ▁of ▁the ▁pl asma ▁memb rane ▁which ▁diff ers ▁from ▁other ▁ATP - binding ▁c ass ette ▁trans por ters ▁that ▁are ▁found ▁on ▁the ▁ap ical ▁side ▁of ▁the ▁memb rane . ▁While ▁AB CC 1 ▁is ▁generally ▁found ▁throughout ▁most ▁t issues ▁in ▁humans , ▁it ▁is ▁particularly ▁pre val ent ▁in ▁the ▁l ungs , ▁s ple en , ▁test es , ▁kid ne ys , ▁pla cent a ,