It has been shown by classical biophysical and biochemical methods in combination with atomic microscopy that lipase from Rhizopus niveus exists in a water solution as a dimer with a molecular weight of 96 kDa. The rate of splitting of triglycerides by a dimeric molecules is twice that of monomers. The heat stability of the monomeric form of lipase at temperatures of 20-60 degrees C is significantly higher than that of the native molecule.
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