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. 1982 Sep 15;206(3):675–678. doi: 10.1042/bj2060675

Proteolytic activation can produce a phosphatidylinositol phosphodiesterase highly sensitive to Ca2+

Keisuke Hirasawa 1, Robin F Irvine 1, Rex M C Dawson 1
PMCID: PMC1158640  PMID: 6293471

Abstract

The phosphatidylinositol phosphodiesterase of rat brain shows little activity under conditions likely to pertain in vivo (neutral pH and micromolar Ca2+ concentrations). A short incubation of a brain supernatant with trypsin, or a longer pre-incubation of the supernatant alone, produce new forms of the enzyme, which are active under such conditions. A possible role of receptor-linked proteinases in initiating phosphatidylinositol catabolism is discussed.

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Selected References

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