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Preparation of polymorphonuclear leukocyte plasma membranes which show fc receptor activity






Journal of Biochemistry (Tokyo) 92(6): 1891-1900

Preparation of polymorphonuclear leukocyte plasma membranes which show fc receptor activity

A plasma membrane-rich fraction was prepared from guinea pig peritoneal polymorphonuclear leucocytes (PMN) by a N cavitation method. Fc receptor activity was measured in the fraction. The activity showed a Kd of 5 .times. 10-7 M IgG and a maximum binding of 33 pmol IgG/mg protein when measured with an immune complex made with bovine serum albumin and rabbit anti-(bovine serum albumin) IgG. Properties of the Fc receptor in the plasma membrane fraction were similar to that in intact PMN. The Fc receptor activity and 5'-nucleotidase activity are markers for plasma membranes of these cells.

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Accession: 006173696

PMID: 7161263



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