Abstract:
:Cortactin, an actin-binding protein and a substrate of Src, is encoded by the EMS1 oncogene. Cortactin is known to activate Arp2/3 complex-mediated actin polymerization and interact with dynamin, a large GTPase and proline rich domain-containing protein. Transferrin endocytosis was significantly reduced in cells by knock-down of cortactin expression as well as in vivo introduction of cortactin immunoreagents. Cortactin-dynamin interaction displayed morphologically dynamic co-distribution with a change in the endocytosis level in cells treated with an actin depolymerization reagent, cytochalasin D. In an in vitro beads assay, a branched actin network was recruited onto dynamin-coated beads in a cortactin Src homology domain 3 (SH3)-dependent manner. In addition, cortactin was found to function in the late stage of clathrin coated vesicle formation. Taken together, cortactin is required for optimal clathrin mediated endocytosis in a dynamin directed manner.
journal_name
Acta Biochim Biophys Sin (Shanghai)journal_title
Acta biochimica et biophysica Sinicaauthors
Chen L,Wang ZW,Zhu JW,Zhan Xdoi
10.1111/j.1745-7270.2006.00141.xsubject
Has Abstractpub_date
2006-02-01 00:00:00pages
95-103issue
2eissn
1672-9145issn
1745-7270journal_volume
38pub_type
杂志文章abstract::hPFTAIRE1 is a Cdc2-related kinase family member. To search its substrates and regulatory proteins, hPFTAIRE1 was fused to LexA and used as a bait to screen a human brain LexA two-hybrid library. In this screening, seven hPFTAIRE1 interacting proteins, including promyelocytic leukemia zinc finger (PLZF), were obtained...
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