# OC Root 2nd 3rd 4th PC Gene/Definition OC.232090 Bacteria.333586 Proteobacteria.450872 Alphaproteobacteria.301727 apb.1337 apb:SAR116_1336 MetA1; K00651 homoserine O-succinyltransferase/O-acetyltransferase [EC:2.3.1.46 2.3.1.31]