The adaptation to stress was meant to cover the classical stress inducers such as osmotic pressure, temperature, starvation. The protection category was meant to cover those related to compound / chemical induced killing or stress. The defense/survival category was meant to cover virulence factors (although K-12 does not have many).
cusF (copper / silver efflux system - periplasmic binding protein and metallochaperone),
dosC (diguanylate cyclase),
dosP (c-di-GMP phosphodiesterase, heme-regulated),
dsbA (protein disulfide oxidoreductase - DsbAoxidised),
pdeF (cyclic di-GMP phosphodiesterase),
pdeR (cyclic di-GMP phosphodiesterase)
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