[SW|ABC transporter ](ATP-binding protein) ([[protein|8BF7EB539B53D75BD30BD30ABF27106D6A0B030B]]-[[protein|E22D0F0AC56DC95AFC02E7F55FCD5FAA44B6B490]]), required for [[protein|CwlO ]]activity (cell elongation) and for proper activation of [[protein|Spo0A ]]and initiation of [SW|sporulation]