We also observed effects of a number of genes involved in general stress response (groES, groEL1, hsp, ahp, dnaK), genes involved in stress response regulation (sigB, devR, devS, hspR, kstR), members of the WhiB family (whiB2, whiB3, whiB4, whiB, whiB6, whiB7) and alternative sigma factors (sigE, sigL, sigM) in the eccCb1 mutant during infection to macrophages. This evidence concerns the gene HSPE1 and infection.