To address this question we study
various microtubule - associated proteins (molecular motors and MAPs) and their regulators (kinases,
phosphatases and the small GTPase Ran during M - phase).
In vitro, Pds has been shown to produce β - glucosidase, N - acetyl - β - glucosaminidase, acid and alkaline
phosphatases, esterase / esterase lipase / lipase, leucine and vailine arylamidase, naphthol - AS - B1 - phophohydrolase,
various proteinases (albumin / casein / gelatin), and urease, while no enzymatic activity was indicated for cystine arylamidase, α - chymotrypsin, alpha / beta galactosidase, trypsin, β - glucoronidase, α - fucosidase, and α - mannosidase [11].