Analysis of the molecular mechanisms of the fern photoreceptor

从其结构域结构来看，PHY3似乎具有与趋光性激素相同的信号处理机制。由于PHY3中一些对其功能起重要作用的氨基酸残基是保守的，因此将突变引入到PHY3的这些残基中，并将其转入拟南芥PHY1Pho2中。这些转基因植株对表达野生型PHY3的拟南芥表现出相似的趋光反应，因此，PHY3可能具有不同于促光激素的信号处理机制。

From its domain organization, phy3 seems to have same signal processing mechanisms as phototropins. As some amino acid residues that are important for its functions of phototropins are conserved in phy3, mutations were introduced into these residues of phy3 and transferred into Arabidopsis phot1phot2. These transgenic plants showed similar phototropic responses to the Arabidopsis expressing wild-type phy3; therefore, phy3 might have signal processing mechanisms different from one's of phototropins.