SIR2H: Uncharacterized prokaryotic Sir2 homologs from several gram positive bacterial species and Fusobacteria; and are members of the SIR2 family of proteins, silent information regulator 2 (Sir2) enzymes which catalyze NAD+-dependent protein/histone deacetylation. Sir2 proteins have been shown to regulate gene silencing, DNA repair, metabolic enzymes, and life span.
Jiyao W et al.(2023). "The conserved domain database in 2023.",