This is family consists of a region in several Arabidopsis thaliana hypothetical proteins none of which have any known function. The aligned region contains two cysteine residues. This domain shows structural similarity to members of the Bet v1-like superfamily [1] and may be involved in lipid binding.

1: JASSY, a chloroplast outer membrane protein required for jasmonate biosynthesis. Guan L, Denkert N, Eisa A, Lehmann M, Sjuts I, Weiberg A, Soll J, Meinecke M, Schwenkert S; Proc Natl Acad Sci U S A. 2019;116:10568-10575. PMID:31068459