Zhu et al., Hokkaido Igaku Zasshi 1996
(Leukemia, Promyelocytic, Acute) :
The PP2A activity of the cells incubated for 18 h with retinoic acid was much more greatly activated by protamine compared with the activity of the cells incubated without retinoic acid
Cheng et al., Biochemistry 1996
:
The effects of protamine on the phosphorylase phosphatase activity of porcine cardiac protein phosphatase 2A1 (PP2A1) were complex and ionic strength dependent ... The activation of PP2A1 by protamine is proposed to involve part of the basic polypeptide, not associated with phosphorylase a monomer, interacting with the regulatory and/or the catalytic subunit ( s ) of the phosphatase ... A minimal model for the activation of PP2A1 by protamine was tested kinetically
Zhu et al., Arch Biochem Biophys 1997
:
The phosphorylase phosphatase activity of PP2A in the 0.13 M eluate was greatly enhanced in the presence of protamine compared with that of the later eluting PP2A