Evolutionary microbiologist Mitchell Sogin has found genetic and cellular parallels among
fungi,
sponges, and man, and then has unequivocally claimed the
sponge as our ancestor.
Functional perilipins (PLIN proteins encoded by the PLIN genes)(Lu et al., 2001) have been identified in very diverse organisms such
as Drosophila (Teixeira et al., 2003), Dictyostelium (Du et al., 2013) and
fungi (Wang & St Leger, 2007) and protein databases list clear orthologues in diverse, non-plant eukaryota, including the simplest metazoan Trichoplax adherens,
sponges, crustaceans, and choanoflagelates (UniProt proteins B3RRM2, I1GA14, G5DCP6, F2UJD9, respectively).