c aten in , ▁is ▁a ▁protein ▁that ▁in ▁humans ▁is ▁encoded ▁by ▁the ▁CT NN B 1 ▁gene . ▁▁ β - c aten in ▁is ▁a ▁dual ▁function ▁protein , ▁involved ▁in ▁reg ulation ▁and ▁coord ination ▁of ▁cell – cell ▁ad hes ion ▁and ▁gene ▁trans cription . ▁In ▁humans , ▁the ▁CT NN B 1 ▁protein ▁is ▁encoded ▁by ▁the ▁CT NN B 1 ▁gene . ▁In ▁D ros oph ila , ▁the ▁hom olog ous ▁protein ▁is ▁called ▁arm ad illo . ▁ β - c aten in ▁is ▁a ▁sub unit ▁of ▁the ▁cad her in ▁protein ▁complex ▁and ▁acts ▁as ▁an ▁int rac ell ular ▁signal ▁trans du cer ▁in ▁the ▁W nt ▁signal ing ▁path way . ▁It ▁is ▁a ▁member ▁of ▁the ▁c aten in ▁protein ▁family ▁and ▁hom olog ous ▁to ▁ γ - c aten in , ▁also ▁known ▁as ▁pla k og lo bin . ▁B eta - c aten in ▁is ▁widely ▁expressed ▁in ▁many ▁t issues . ▁In ▁card iac ▁mus cle , ▁beta - c aten in ▁local izes ▁to ▁ad her ens ▁j unction s ▁in ▁inter cal ated ▁disc ▁structures , ▁which ▁are ▁critical ▁for ▁elect rical ▁and ▁mechanical ▁coupling ▁between ▁adjacent ▁card iom y ocy tes . ▁ ▁Mut ations ▁and ▁over expression ▁of ▁ β - c aten in ▁are ▁associated ▁with ▁many ▁can cers , ▁including ▁he pat oc ell ular ▁car cin oma , ▁col ore ct al ▁car cin oma ,