Putative thioesterase. Does not bind pectin, and has no pectinesterase activity. Belongs to the pectinesterase family. Lacks the conserved Asp residue in position 252 essential for pectinase activity. Likewise, most of the residues involved in substrate binding are not conserved. Was originally (PubMed:15808744) thought to have palmitoyl-CoA thioesterase activity, but PubMed:19452549 were unable to detect any pectinase or palmitoyl-CoA thioesterase activity. Its enzyme activity is therefore unsure.