| RRC ID |
28706
|
| 著者 |
Insall R, Müller-Taubenberger A, Machesky L, Köhler J, Simmeth E, Atkinson SJ, Weber I, Gerisch G.
|
| タイトル |
Dynamics of the Dictyostelium Arp2/3 complex in endocytosis, cytokinesis, and chemotaxis.
|
| ジャーナル |
Cell Motil Cytoskeleton
|
| Abstract |
The Arp2/3 complex is a ubiquitous and important regulator of the actin cytoskeleton. Here we identify this complex from Dictyostelium and investigate its dynamics in live cells. The predicted sequences of the subunits show a strong homology to the members of the mammalian complex, with the larger subunits generally better conserved than the smaller ones. In the highly motile cells of Dictyostelium, the Arp2/3 complex is rapidly re-distributed to the cytoskeleton in response to external stimuli. Fusions of Arp3 and p41-Arc with GFP reveal that in phagocytosis, macropinocytosis, and chemotaxis the complex is recruited within seconds to sites where actin polymerization is induced. In contrast, there is little or no localization to the cleavage furrow during cytokinesis. Rather the Arp2/3 complex is enriched in ruffles at the polar regions of mitotic cells, which suggests a role in actin polymerization in these ruffles.
|
| 巻・号 |
50(3)
|
| ページ |
115-28
|
| 公開日 |
2001-11-1
|
| DOI |
10.1002/cm.10005
|
| PII |
10.1002/cm.10005
|
| PMID |
11807934
|
| MeSH |
Actin-Related Protein 2
Actin-Related Protein 3
Actins / analysis
Actins / metabolism*
Amino Acid Sequence
Animals
Cell Division / physiology*
Chemotaxis / physiology*
Cyclic AMP / pharmacology
Cytoskeletal Proteins*
Dictyostelium / chemistry*
Endocytosis / physiology*
Endosomes / metabolism
Green Fluorescent Proteins
Histocytochemistry / methods
Luminescent Proteins / metabolism
Macromolecular Substances
Molecular Sequence Data
Phagocytosis / physiology
Pinocytosis
Sequence Homology, Amino Acid
Signal Transduction
Species Specificity
|
| 引用数 |
104
|
|
WOS 分野
|
CELL BIOLOGY
|
| リソース情報 |
| 細胞性粘菌 |
G02982 G03201
S90289 |
