TABLE 3.

Substrate specificity of PhaZc

SubstrateSp act (μmol/min/mg)a
3HB oligomers
    Dimer31
    Trimer200
    Tetramer240
    Pentamer310
PHB
    Artificial amorphous PHB3.0
    Native PHB granules<0.1
    Semicrystalline PHB<0.1
p-Nitrophenyl esters
    Acetate1.0
    Butyrate6.0
    Palmitate<0.01
Olive oil<0.5
  • a Activity was assayed as described in Materials and Methods.