Smythe Elizabeth, Ayscough Kathryn R
Centre for Developmental Genetics, Department of Biomedical Sciences, University of Sheffield, Sheffield S10 2TN, UK.
EMBO Rep. 2003 Mar;4(3):246-51. doi: 10.1038/sj.embor.embor776.
The Ark/Prk serine/threonine kinases initiate phosphorylation cycles that control the endocytic machinery in mammalian cells and in yeast, and the actin cytoskeleton in yeast. The members of this protein family are unified by homologies in their kinase domain, but are generally diverse in their other domains. The evolution of Ark/Prk family members in different organisms may have allowed the conserved role of the kinase domain, which is required for the phosphorylation of both endocytic and cytoskeletal components, to be coupled to other functional domains.
Ark/Prk丝氨酸/苏氨酸激酶启动磷酸化循环,该循环控制哺乳动物细胞和酵母中的内吞机制以及酵母中的肌动蛋白细胞骨架。这个蛋白质家族的成员在其激酶结构域具有同源性,但在其他结构域通常各不相同。不同生物体中Ark/Prk家族成员的进化可能使激酶结构域的保守作用(内吞和细胞骨架成分磷酸化所必需的)与其他功能结构域相结合。