Finally, our understanding of schizophrenia might profit from Arabidopsis because the BLOS-1 protein, homologous to human and mice BLOC-1 complex BLOS proteins which are relevant for the schizophrenia (Mullin et al., 2011), controls endocytic vesicular recycling of PIN2 and PIN1 in the transition zone of Arabidopsis roots, and modulates their growth (Cui et al., 2010). The gene discussed is PIN1; the disease is schizophrenia.