PUBLICATION
Co-translational protein targeting facilitates centrosomal recruitment of PCNT during centrosome maturation in vertebrates
- Authors
- Sepulveda, G., Antkowiak, M., Brust-Mascher, I., Mahe, K., Ou, T., Castro, N.M., Christensen, L.N., Cheung, L., Jiang, X., Yoon, D., Huang, B., Jao, L.E.
- ID
- ZDB-PUB-180502-9
- Date
- 2018
- Source
- eLIFE 7: (Journal)
- Registered Authors
- Antkowiak, Mark, Jao, Li-En, Sepulveda, Guadalupe, Yoon, Daniel
- Keywords
- cell biology, human, zebrafish
- MeSH Terms
-
- Animals
- Antigens/genetics
- Antigens/metabolism*
- Cell Cycle Proteins/metabolism
- Cell Line
- Centrosome/metabolism*
- Dyneins/metabolism*
- Humans
- Mitosis*
- Nerve Tissue Proteins/metabolism
- Protein Biosynthesis*
- Protein Transport
- RNA, Messenger/analysis
- Zebrafish
- Zebrafish Proteins/metabolism
- PubMed
- 29708497 Full text @ Elife
Citation
Sepulveda, G., Antkowiak, M., Brust-Mascher, I., Mahe, K., Ou, T., Castro, N.M., Christensen, L.N., Cheung, L., Jiang, X., Yoon, D., Huang, B., Jao, L.E. (2018) Co-translational protein targeting facilitates centrosomal recruitment of PCNT during centrosome maturation in vertebrates. eLIFE. 7.
Abstract
As microtubule-organizing centers of animal cells, centrosomes guide the formation of the bipolar spindle that segregates chromosomes during mitosis. At mitosis onset, centrosomes maximize microtubule-organizing activity by rapidly expanding the pericentriolar material (PCM). This process is in part driven by the large PCM protein pericentrin (PCNT), as its level increases at the PCM and helps recruit additional PCM components. However, the mechanism underlying the timely centrosomal enrichment of PCNT remains unclear. Here, we show that PCNT is delivered co-translationally to centrosomes during early mitosis by cytoplasmic dynein, as evidenced by centrosomal enrichment of PCNT mRNA, its translation near centrosomes, and requirement of intact polysomes for PCNT mRNA localization. Additionally, the microtubule minus-end regulator, ASPM, is also targeted co-translationally to mitotic spindle poles. Together, these findings suggest that co-translational targeting of cytoplasmic proteins to specific subcellular destinations may be a generalized protein targeting mechanism.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping