Here are some search terms for you to try in the databases, such as ProQuest Science Journals and EBSCO Multi-search. Always make sure you have the "peer reviewed" or "scholarly" box checked off before you search!
Apoptosis AND Bacteria (try as keywords and as subjects)
"Programmed cell death" and Bacteria
Apoptosis AND Proteins
Apoptosis AND "Signal pathways"
Also try Apoptosis AND specific bacteria: Streptococcus, Staphylococcus, etc.