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PMID:23554904
| Citation |
Lee, JY and Stearns, T (2013) FOP is a centriolar satellite protein involved in ciliogenesis. PLoS ONE 8:e58589 |
|---|---|
| Abstract |
Centriolar satellites are proteinaceous granules that are often clustered around the centrosome. Although centriolar satellites have been implicated in protein trafficking in relation to the centrosome and cilium, the details of their function and composition remain unknown. FOP (FGFR1 Oncogene Partner) is a known centrosome protein with homology to the centriolar satellite proteins FOR20 and OFD1. We find that FOP partially co-localizes with the satellite component PCM1 in a cell cycle-dependent manner, similarly to the satellite and cilium component BBS4. As for BBS4, FOP localization to satellites is cell cycle dependent, with few satellites labeled in G1, when FOP protein levels are lowest, and most labeled in G2. FOP-FGFR1, an oncogenic fusion that causes a form of leukemia called myeloproliferative neoplasm, also localizes to centriolar satellites where it increases tyrosine phosphorylation. Depletion of FOP strongly inhibits primary cilium formation in human RPE-1 cells. These results suggest that FOP is a centriolar satellite cargo protein and, as for several other satellite-associated proteins, is involved in ciliogenesis. Localization of the FOP-FGFR1 fusion kinase to centriolar satellites may be relevant to myeloproliferative neoplasm disease progression. |
| Links |
PubMed PMC3595297 Online version:10.1371/journal.pone.0058589 |
| Keywords |
Centrioles/genetics; Centrioles/metabolism; Centrioles/pathology; Cilia/genetics; Cilia/metabolism; Cilia/pathology; HeLa Cells; Humans; Leukemia, Myeloid/genetics; Leukemia, Myeloid/metabolism; Leukemia, Myeloid/pathology; Oncogene Proteins, Fusion/genetics; Oncogene Proteins, Fusion/metabolism; Phosphorylation/genetics; Proteins/genetics; Proteins/metabolism; Proto-Oncogene Proteins/genetics; Proto-Oncogene Proteins/metabolism; Receptors, Fibroblast Growth Factor/genetics; Receptors, Fibroblast Growth Factor/metabolism |
Significance
Annotations
| Gene product | Qualifier | GO Term | Evidence Code | with/from | Aspect | Extension | Notes | Status |
|---|---|---|---|---|---|---|---|---|
| GO:0005814: centriole |
ECO:0000314: |
C |
Human; FGFR1 oncogene partner (FOP) According to Figure 1A and S1, FOP localizes to centrioles at all cell stages. |
complete | ||||
| GO:0034451: centriolar satellite |
ECO:0000314: |
C |
Human; FGFR1 oncogene partner (FOP) According to figure 1B and 1C, FOP localizes to centriolar satellites in all cell stages except for G1. |
complete | ||||
Notes
See also
References
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