In Escherichia coli, certain mutations in the cpxA gene (encoding a sensor kinase of a two-component signal transduction system) randomize the location of FtsZ ring assembly and dramatically affect cell division. However, deletion of the cpxRA operon, encoding the sensor kinase and its cognate regulator CpxR, has no effect on division site biogenesis. It appears that certain mutant sensor kinases (CpxA*) either exhibit hyperactivity on CpxR or extend their signalling activity to one or more noncognate response regulators involved in cell division.
Aberrant cell division and random FtsZ ring positioning in Escherichia coli cpxA* mutants / Pogliano, J; Dong, J M; De Wulf, P; Furlong, D; Boyd, D; Losick, R; Pogliano, K; Lin, E C. - In: JOURNAL OF BACTERIOLOGY. - ISSN 0021-9193. - ELETTRONICO. - 1998, VOL. 180:13(1998), pp. 3486-3490.
Aberrant cell division and random FtsZ ring positioning in Escherichia coli cpxA* mutants
De Wulf, P;
1998-01-01
Abstract
In Escherichia coli, certain mutations in the cpxA gene (encoding a sensor kinase of a two-component signal transduction system) randomize the location of FtsZ ring assembly and dramatically affect cell division. However, deletion of the cpxRA operon, encoding the sensor kinase and its cognate regulator CpxR, has no effect on division site biogenesis. It appears that certain mutant sensor kinases (CpxA*) either exhibit hyperactivity on CpxR or extend their signalling activity to one or more noncognate response regulators involved in cell division.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione