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Male Infertility-linked Point Mutation Disrupts the Ca2+ Oscillation-inducing and PIP(2) Hydrolysis Activity of Sperm PLCζ

Overview
Journal Biochem J
Specialty Biochemistry
Date 2011 Jan 6
PMID 21204786
Citations 24
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Abstract

A male infertility-linked human PLCζ (phospholipase Cζ) mutation introduced into mouse PLCζ completely abolishes both in vitro PIP(2) (phosphatidylinositol 4,5-bisphosphate) hydrolysis activity and the ability to trigger in vivo Ca2+ oscillations in mouse eggs. Wild-type PLCζ initiated a normal pattern of Ca2+ oscillations in eggs in the presence of 10-fold higher mutant PLCζ, suggesting that infertility is not mediated by a dominant-negative mechanism.

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