# OC Root 2nd 3rd 4th PC Gene/Definition OC.152529 Bacteria.265678 Proteobacteria.144369 Alphaproteobacteria.9287 apb.1350 apb:SAR116_1349 3-methyl-2-oxobutanoate hydroxymethyltransferase; K00606 3-methyl-2-oxobutanoate hydroxymethyltransferase [EC:2.1.2.11]