神马电影_午夜神马_午夜电影_神马午夜_欧美日韩中文字幕_欧美日韩在线播放_欧美日韩精品_中文字幕观看_欧美日韩中文字幕_欧美中文字幕视频_欧美日韩精品_欧美成人在线视频_欧美乱人伦中文字幕在线不卡_日韩免费高清专区_久久久久亚州?Ⅴ无码专区首_精品国偷自产在线不卡短视频_尹人久久大香找蕉综合影院中文字幕免费在线观看_欧美激情综合色综合啪啪五月

                                                      酚氧化酶的研究進(jìn)展

 酚氧化酶（phenoloxidase, PO） 又名酶，是一種普遍存在于動物和植物體內(nèi)的銅離子酶，具有多種生物學(xué)功能。酚氧化酶可把單酚羥化成二酚（ 如多巴），接著二酚被氧化成醌，在非酶促反應(yīng)條件下，醌形成的zui終產(chǎn)物是黑色素。的黑色素對昆蟲的正常生長發(fā)育具有重要作用。酚氧化酶一般以無活性的酚氧化酶原（prophenoloxidase, proPO） 形式存在于昆蟲的血淋巴中。從昆蟲酚氧化酶的結(jié)構(gòu)、分布、活化的分子機(jī)制和功能及研究進(jìn)展等方面進(jìn)行綜述。
Abstract: Phenoloxidase （PO）, also known as tyrosinase, is a copper-containing enzyme widely distributed in animals and plants, and possesses diverse biological functions. It can catalyse the hydroxylation of monophenols to diphenols （such as dopa）, then the diphenols are oxidized to quinone, which is polymerized non-enzymetically into melanin. The melanin plays very important roles in normal growth and development of insects. PO generally exsits in the hemolymph of insects as an inactive form called prophenoloxidase （proPO）. In this paper, we mainly review the structure, distribution, molecular mechanisms of activation, function and research progress of PO in insects.