This domain is found in Erwinia virulence factor (Evf) present in the Drosophila Pathogen, Erwinia carotovora. Evf is able to bind to model membranes containing negatively charged phospholipids and to promote their aggregation. Palmitoic acid covalently binds to the completely conserved Cys209. The structure of Evf is unlike any virulence factors known to date.
Jiyao W et al.(2023). "The conserved domain database in 2023.",