| RRC ID |
28974
|
| 著者 |
Haugwitz M, Noegel AA, Karakesisoglou J, Schleicher M.
|
| タイトル |
Dictyostelium amoebae that lack G-actin-sequestering profilins show defects in F-actin content, cytokinesis, and development.
|
| ジャーナル |
Cell
|
| Abstract |
To study in vivo functions of the ubiquitous actin-binding protein profilin, we generated by antisense and gene disruption techniques Dictyostelium mutants that lack one or both of the profilin isoforms. Whereas the single mutants showed an essentially unchanged phenotype, the behavior of the double mutant was drastically altered. Motility was significantly reduced, single cells were up to 10 times larger than wild-type cells and showed a broad rim of filamentous actin below the plasma membrane, the filamentous actin concentration was increased by about 60%-70%, and development was blocked prior to fruiting body formation. Furthermore, double mutants could not be grown in shaking culture under normal conditions, reflecting an impaired cytokinesis. The aberrant phenotype could be rescued by reintroducing a functional profilin I or profilin II gene. The data in this study suggest that profilin functions in Dictyostelium amoebae primarily as an actin-sequestering protein.
|
| 巻・号 |
79(2)
|
| ページ |
303-14
|
| 公開日 |
1994-10-21
|
| DOI |
10.1016/0092-8674(94)90199-6
|
| PII |
0092-8674(94)90199-6
|
| PMID |
7954798
|
| MeSH |
Actins / metabolism*
Animals
Cell Division*
Chemotaxis
Contractile Proteins*
Dictyostelium / cytology*
Microfilament Proteins / physiology*
Mutagenesis, Insertional
Profilins
|
| IF |
38.637
|
| 引用数 |
189
|
|
WOS 分野
|
BIOCHEMISTRY & MOLECULAR BIOLOGY
CELL BIOLOGY
|
| リソース情報 |
| 細胞性粘菌 |
S00415 |
