The mitogen-activated protein (MAP) kinase cascades are composed of mitogen-activated protein kinases （MAPKs）, mitogen-activated protein kinase kinases （MAPKKs） and mitogen-activated protein kinase kinase kinases （MAPKKKs）, they transfer signals through phosphorylations of MAPKKK→MAPKK→MAPK. MAP kinases include a large family of serine/threonine protein kinases which are structurally conserved in eukaryotes. MAP kinase cascades play essential roles in signal transductions of extracellular signals to intracellular targets in eukaryotes. Some MAPKs, MAPKKs and MAPKKKs have been isolated from the higher plants, they mediate the signal transductions involved in plant responses to hormones, cell proliferation and differentiation, and environmental stresses.
植物促分裂原活化蛋白（MAP）激酶
刘强1,2 张贵友1 SHINOZAKI Kazuo 3
（1. 清华大学生物科学与技术系植物分子生物学实验室，北京100084；
2. 清华大学生物科学与技术系生物膜与膜生物工程国家重点实验室，北京100084；
3. 日本理化研究所生命科学筑波研究中心植物分子生物学实验室，筑波305）
关键词：MAP激酶；级联途径；蛋白激酶；环境胁迫；信号传递
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