This family contains plant proteins related to caleosin. Caleosins contain calcium-binding domains and have an oleosin-like association with lipid bodies. Caleosins are present at relatively low levels and are mainly bound to microsomal membrane fractions at the early stages of seed development. As the seeds mature, overall levels of caleosins increased dramatically and they were associated almost exclusively with storage lipid bodies [1]. This family is probably related to EF hands Pfam:PF00036.

1: New insights into the mechanisms of lipid-body biogenesis in plants and other organisms. Murphy DJ, Hernendez-Pinzon I, Patel K, Hope RG, McLauchlan J; Biochem Soc Trans 2000;28:710-711. PMID:11171180