Is protein degradation correlated with either the charge or size of Lemna proteins?

Evidence is presented that the organelles of Lemna minor do not degrade as functional units. The proteins of Lemna show wide differences in their rates of degradation and ribulose bisphosphate carboxylase (EC 4.1.1.39) has a particularly slow rate of degradation. Contrary to some earlier evidence, we found no correlation between the rate of soluble-protein degradation and either charge or size of proteins. We could find no correlation between protein degradation and subunit size in any of the organelles of Lemna.Abbreviations FPLC fast protein liquid chromatography - PAGE polyacrylamide gel electrophoresis - RuBPCase ribulose-1,5-bisphosphate carboxylase - SDS sodium dodecylsulphate - Tris 2-amino-2-(hydroxymethyl)-1,3-propanediol