[Multiplicity of lipase forms from Rhizopus microsporus]

The lipase from Rhizopus microsporus of glycoprotein origin is represented by five forms differing in their molecular weights and localization in the cell. The lipase forms are distinguished by their relative content of A and B subunits (AB, 2A + B, A + 2B, 4A + B, 3A + 2B). Only three isoenzymes containing the bulk of the non-protein moieties were detected in the culture fluid. The other two forms can exist only as intracellular proteins.