The 103 putatively green algal derived MTs in diatoms, clustered based on similar functions.

Note: Shown for each cluster is the identifier (Cluster ID), number of proteins within the cluster (Size), the putative function, the classification of MT family based on TransportDB, the outgroup used in phylogeny sorting, and the protein target prediction using HECTAR, in which “CHL” denotes proteins targeting to chloroplast/plastid, “MIT” denotes proteins targeting to mitochondrion, “SP” denotes presence of signal peptide, “SA” denotes presence of Type II signal anchor, “-” denotes no N-terminal target peptide found. None of these proteins show evidence of plastid- or mitochondrion-targeting. The abbreviation of MT family follows Table S1, according to http://www.membranetransport.org/.