avi:Avi_2276 K03821 poly[(R)-3-hydroxyalkanoate] polymerase subunit PhaC [EC:2.3.1.304] | (GenBank) phbC; poly-beta-hydroxybutyrate synthase avi:Avi_4344 K00626 acetyl-CoA C-acetyltransferase [EC:2.3.1.9] | (GenBank) phbA; acetyl-CoA acetyltransferase avi:Avi_4345 K00023 acetoacetyl-CoA reductase [EC:1.1.1.36] | (GenBank) phbB; acetoacetyl CoA reductase; poly-beta-hydroxybutyrate biosynthesis