蛋白质激酶Ser/Thr-Pro保守序列中Ser/Thr的可逆磷酸化是细胞各种生命活动的重要信号调控机制,其失调将导致各种人类疾病的发生。Pin1是人类高度保守的特异性磷酸化肽基脯氨酰顺反异构酶,它作用于脯氨酸所形成的肽键,并且仅使磷酸化pSer/Thr-Pro发生异构,即由顺式变为反式,从而影响底物蛋白的功能。最近研究显示:这种由Pin1介导的磷酸化蛋白构象的改变是重要的细胞信号调控机制。目前,已有20多种Pin1的底物被分离出来,包括Cdc25、Weel、Mytl、Cdc27、CyclinD1和β-catenin等,与这些蛋白的相互作用说明Pin1可能在细胞周期调控和信号转导过程中发挥着重...Protein phosphorylation on certain serine or threonine residues preceding proline (Ser/Thr-Pro) is a pivitol signaling mechanism in diverse cellular processes and its deregulation can lead to human disease. Pin1 is a highly conserved enzyme that isomerizes only the phosphorylated Ser/Thr-Pro bonds in certain proteins, thereby inducing conformational changes. Recent results indicate that such confo...学位:理学硕士院系专业:生命科学学院生物学系_水生生物学学号:20042602