- Deduced polypeptides encoded by the Bacillus subtilis sacU locus share homology with two-component sensor-regulator systems. Kunst, F., Debarbouille, M., Msadek, T., Young, M., Mauel, C., Karamata, D., Klier, A., Rapoport, G., Dedonder, R. J. Bacteriol. (1988)