y branching of actin filaments
| PAG Title | y branching of actin filaments |
| PAG ID | WAG001037 |
| Type | P |
| Source Link |  BioCarta |
| Publication Reference | NA |
| PAG Description | Mammalian cell motility requires actin polymerization in the direction of movement to change membrane shape and extend cytoplasm into lamellipodia. The polymerization of actin to drive cell movement also involves branching of actin filaments into a network oriented with the growing ends of the fibers near the cell membrane. Manipulation of this process helps bacteria like Salmonella gain entry into cells they infect. Two of the proteins involved in the formation of Y branches and in cell motility are Arp2 and Arp3, both members of a large multiprotein complex containing several other polypeptides as well. The Arp2/3 complex is localized at the Y branch junction and induces actin polymerization. Activity of this complex is regulated by multiple different cell surface receptor sigling systems, activating WASP, and Arp2/3 in turn to cause changes in cell shape and cell motility. Wasp and its cousin Wave-1 interact with the Arp2/3 complex through the p21 component of the complex. The crystal structure of the Arp2/3 complex has revealed further insights into the ture of how the complex works. |
| Species | Homo sapiens |
| Quality Metric Scores | nCoCo Score: 2,030 |
| Information Content | Rich |
| Other IDs | |
| Base PAG ID | WAG001037 |
| Human Phenotyte Annotation | |
| Curator | PAGER curation team |
| Curator Contact | PAGER-contact@googlegroups.com |
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