The SOS response is a global transcriptional response to DNA damage in prokaryotes, in which the cell cycle is arrested and DNA repair mechanisms (error-free as well as error-prone) are induced. The regulation of this response is driven by two proteins, RecA and LexA. The RecA protein, stimulated by single-stranded DNA, is involved in the inactivation of the repressor (LexA) of SOS response genes thereby inducing the response.
The SOS response is a global transcriptional response to DNA damage in prokaryotes, in which the cell cycle is arrested and DNA repair mechanisms (error-free as well as error-prone) are induced. The regulation of this response is driven by two proteins, RecA and LexA. The RecA protein, stimulated by single-stranded DNA, is involved in the inactivation of the repressor (LexA) of SOS response genes thereby inducing the response.
Source: Wikipedia "SOS response" · CC BY-SA 4.0
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