Involved in defense against bacteriophages. When this probable 4 gene operon (bGSDM-FE772_23060-FE772_23065-FE772_23070) is inserted into E.coli it provides nearly 100-fold protection against phages T5 and T6 and about 8-fold against phage T4. The operon without bGSDM no longer protects against phage (PubMed:35025633). Probably a nucleotide hydrolase, possibly of ATP (Probable).