The FrsA-like family includes FrsA, an esterase found to have the alpha/beta-hydrolase fold. t also includes the hydrolytic polyketide shortening protein Ayg1 from fungi, 2,6-dihydropseudooxynicotine hydrolase from Paenarthrobacter nicotinovorans and Fus2 from Gibberella species. The enzyme 2,6-dihydroxy-pseudo-oxynicotine hydrolase is involved in the nicotine-degradation pathway of Arthrobacter nicotinovorans. Fus2 is part of the gene cluster that mediates the biosynthesis of the mycotoxin fusarin C. Fus2 catalyzes closure of the 2-pyrrolidone ring of the intermediate 20-hydroxy-prefusarin to form another intermediate, 20-hydroxy-fusarin, which is then oxidized by Fus8.
Jiyao W et al.(2023). "The conserved domain database in 2023.",