pp1

The down-regulated expression of protein phosphatase 1 ( PP1 ) related to celluar signal transduction protein could stabilize endothelium cell barrier and alleviate ischemia-reperfusion injury .

细胞信号和传递蛋白相关基因（PP1基因）表达下调，能稳定内皮细胞屏障，减轻脑缺血再灌注损伤。

Peridotite from the Pre-pilot Hole ( PP1 ) of the Chinese Continental Scientific Drilling Project and Its Bearing on Depleted and Metasomatic Upper Mantle

江苏东海芝麻房预先导孔（CCSD-PP1）橄榄岩及其反映的上地幔亏损和交代事件

Results Compared with PP1 group and PP2 group , PP3 group showed higher levels of carotid stiffness , and carotid strain and carotid distensibility were lower significantly .

结果PP3组与PP1、PP2组比较，颈动脉紧张度与扩张性明显降低，而僵硬度明显增高。

Microcystins act by inhibiting serine / threonine phosphatases 1 and 2A ( PP1 , 2A ) .

微囊藻毒素毒性是其能抑制导致蛋白磷酸化的丝氨酸／苏氨酸磷酸酶1和2A（PP1，2A）。

PP1 is composed of catalytic subunits and regulatory subunits , which modulates metabolism , cell differentiation and signal transduction by dephosphorylation . The regulatory subunits determine the substrate specificity , activity and subcellular localization of PP1 .

Ⅰ型蛋白磷酸酶（PP1），通过去磷酸化蛋白调节机体代谢、细胞分化以及信号转导等。它由催化亚基和调节亚基组成，后者决定磷酸酶的底物特异性，活性以及亚细胞定位。

The porphyrans were added CTAB in to remove the acid polysaccharide PP1 and the left neutral polysaccharide PP2 was purified by superfilter . PP2 was further purified through DEAE-Cellulose 52 and Sephadex G 200 and was proved to be pure through PC , gel filtration and UV spectrum .

在粗多糖溶液中加入CTAB以沉淀除去酸性多糖PP1，超滤以纯化中性多糖PP2，PP2经DEAE纤维素、葡聚糖凝胶G200进一步纯化。