Record Display for the EPA National Library Catalog


Main Title PCPP-260, Purkinje Cell-Specific Cycle AMP-Regulated Membrane Phosphoprotein of (M sub r) 260,000.
Author Walaas, S. I. ; Nairn, A. C. ; Greengard, P. ;
CORP Author Rockefeller Univ., New York.;Health Effects Research Lab., Research Triangle Park, NC.
Year Published 1986
Report Number EPA-R-810608; EPA/600/J-86/186;
Stock Number PB87-145587
Additional Subjects Cells(Biology) ; Membrances B ; Reprints ; Phosphoprotein ; Purkinje cells
Library Call Number Additional Info Location Last
NTIS  PB87-145587 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 10p
The present study reports the existence of Purkinje cell-specific phosphoprotein, Mr260,000 (PCPP-260), a neuronal membrance phosphoprotein, in cerebellar Purkinje cells. PCPP-260, which on sodium dodecyl sulfate-polyacrylamide gel electrophoresis has an apparaent molecular mass of 260,000 Da, has been found to be phosphorylated in particulate preparations by endogenous or added exogenous cyclic AMP-dependent protein kinase, but not by cyclic GMP-dependent, calcium/calmodulin-dependent or calcium/phospholipid-dependent protein kinases. The protein has been found in high concentrations in all mammalian cerebella so far analyzed, including human cerebellum. One- and two-dimensional electrophoretic and peptide mapping analyses of proteins in other brain regions show that a closely related 265,000 Da phosphoprotein also exists, albert in low concentrations, outside the cerebellum. Analysis of cerebella from mutant mice, deficient in either Purkinje cells or in granule cells, indicates that PCPP-260 within the cerebellum is restricted to Purkinje cells.