PC is hydrolyzed to 1-acyl LPC by PLA2[5]
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At the endoplasmic reticulum (ER) membrane, phosphatidylcholine (PC) is hydrolyzed and has one of its acyl chains cleaved off by a phospholipase A2 to form 1-acyl lysophosphatidylcholine (LPC). The phospholipases are either cytosolic phospholipase A2 alpha/beta/delta/zeta (PLA2G4A/B/D/F) (Ghomashchi et al. 2010, Clarke et al. 1991, Sharp et al. 1994, Song et al. 1999, Chiba et al. 2004), 85 kDa calcium-independent phospholipase A2 (PLA2G6) (Larsson et al. 1998, Ma et al. 1999, Larsson Forsell et al. 1999), group XVI phospholipase A2 (PLA2G16) (Duncan et al. 2008), or Phospholipase B-like 1 (PLBD1) (Xu et al. 2009). PLBD1 acts as a phospholipase A2 but in addition has the propensity to hydrolyze the lysophospholipid formed in its initial reaction.
在质膜的内质网(ER)区域,磷脂酰胆碱(PC)经磷脂酶A2催化水解,其中一条酰基链被切断,从而形成1-酰基溶血磷脂酰胆碱(LPC)。磷脂酶A2家族包括细胞质磷脂酶A2 alpha/beta/delta/zeta(PLA2G4A/B/D/F)(Ghomashchi等人,2010年,Clarke等人,1991年,Sharp等人,1994年,Song等人,1999年,Chiba等人,2004年),85 kDa钙非依赖性磷脂酶A2(PLA2G6)(Larsson等人,1998年,Ma等人,1999年,Larsson Forsell等人,1999年),第XVI族磷脂酶A2(PLA2G16)(Duncan等人,2008年),或磷脂酶B样1(PLBD1)(Xu等人,2009年)。PLBD1作为一种磷脂酶A2,除了催化反应外,还具有水解初始反应中形成的溶血磷脂的倾向。
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