A PLCE1 ou 1-fosfatidilinositol-4,5-bisfosfato fosfodiesterase épsilon-1, também chamada fosfoinositídeo fosfolipase C épsilon 1 (EC3.1.4.11), é uma enzima que, em humanos, está codificada no genePLCE1 do cromossoma 10. Catalisa a reação:
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