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Phage shock protein B This family consists of several bacterial phage shock protein B (PspB) sequences. The phage shock protein (psp) operon is induced in response to heat, ethanol, osmotic shock and infection by filamentous bacteriophages. Expression of the operon requires the alternative sigma factor sigma54 and the transcriptional activator PspF. In addition, PspA plays a negative regulatory role, and the integral-membrane proteins PspB and PspC play a positive one. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",