Table 3. Genes commonly modulated in P. gingivalis W83 after 15 min treatment with different concentrations of H₂O₂.

Modulation	H2O2 concentration
	0.1 and 0.25 mM	0.25 and 0.5 mM	0.1 and 0.5 mM
Upregulated	pg1729 thiol peroxidase	pg0090 Dps family protein
	pg1286 ferritin	pg0051 ISPg1, transposase, degenerate
	pg1545 superoxide dismutase, Fe-Mn	pg0618 alkyl hydroperoxide reductase, C subunit
	pg1208 DnaK protein	pg0944 ISPg1, transposase, truncation
	pg0010 ATP-dependent Clp protease, ATP-binding subunit ClpC
	pg1116 methylenetetrahydrofolate dehydrogenase/methenyltetrahydrofolate cyclohydrolase
	pg0433 tetrapyrrole methylase family protein
	pg1642 cation-transporting ATPase, EI-E2 family, authentic frameshift
	pg1190 glycerate dehydrogenase
	pg0520 chaperonin, 60 kDa
	pg1124 DUF80 domain protein
	pg1837 haemagglutinin protein HagA
	pg2205 2-dehydropantoate 2-reductase, putative
	pg0686 conserved hypothetical protein
	pg0521 chaperonin, 10 kDa
	pg0421 hypothetical protein
	pg0434 hypothetical protein
	pg0045 heat-shock protein HtpG
	pg1868 membrane protein, putative
Downregulated			pg0627 RNA-binding protein