si_0132 Tricarballylate_Utilization TcuA: flavoprotein used to oxidize tricarballylate to cis-aconitate si_0132 Tricarballylate_Utilization TcuB: works with TcuA to oxidize tricarballylate to cis-aconitate si_0132 Tricarballylate_Utilization TcuC: integral membrane protein used to transport tricarballylate across the cell membrane si_0132 Tricarballylate_Utilization TcuR: regulates tcuABC genes used in utilization of tricarballylate