the following acid hydrolases are partially sedimentable from cell-free extracts of corn seedlings : protease ( ph-optimum 4,2 ) , phosphatase ( ph-optimum 5,0 and 6,5 ) , unspecific esterase ( ph-optimum 5,2 ) , rnase ( ph-optimum 6,5 ) , arylsulphatase-c ( ph-optimum 5,0 ) and alpha- and beta-amylase ( ph-optimum 7,0 and 5,0 respectively ) .
C0020289
hydrolases
C0014241
rnase