Fig. 1. Summary of mammalian TRAPP subunits. (A) Subunits of the TRAPP complex: the name of the subunit, residue number of yeast or human protein, the amino acid (AA) sequence identity between yeast and human protein, and the presence/absence in TRAPP1 and II are indicated. (B) Amino acid sequence alignment of Trs33B of difference species with human Trs33A and yeast Trs33p (h: human; m: mouse; zf: zebrafish). (C) Bet5, TRS20 and TRS23 are related. The alignment of amino acid sequences of human Bet5, TRS20 and TRS23 is shown. (D) Related sequence homology among human Bet3, TRS31, TRS33A and TRS33B. Identical as well as conserved residues are highlighted in gray.