GO:1904779 regulation of protein localization to centrosome: Mechanism, Genes and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:1904779 describes any process that modulates the frequency, rate or extent of protein localization to the centrosome, a key microtubule-organizing center.
• Centrosome protein localization is controlled by a network of kinases, phosphatases, and scaffold proteins, including CDK1, Aurora A, RACK1, and BARD1 [1,2,4,7].
• Disruption of centrosome protein localization leads to centrosome amplification, mitotic defects, and is linked to cancer and neurodevelopmental disorders [1,2,3].
• CDK activity at the centrosome regulates cell cycle progression and centrosome maturation [4,8].
• CPAP and CEP97 are critical for centriole length control and timely centrosome maturation, and their dysfunction causes centriole fragmentation [5,6].
• CRISPR-based knockout, point mutation, knock-in, and overexpression models are essential to dissect the causal roles of genes in this process [1,2,4].
Description
The centrosome is the primary microtubule-organizing center in animal cells and plays essential roles in cell division, polarity, and signaling. For the centrosome to function properly, a precise set of proteins must be delivered to it at the right time and in the right amount. The Gene Ontology term GO:1904779, regulation of protein localization to centrosome, captures the regulatory processes that control this delivery. This term is critical for understanding how cells coordinate centrosome assembly and function with the cell cycle and developmental cues [4,7]. Research over the past decade has identified numerous regulators of centrosome protein localization, including kinases such as CDK1 and Aurora A, scaffold proteins like RACK1, and tumor suppressors such as BARD1 [1,2,4,7]. These regulators ensure that centrosome components, including centriolar proteins like CPAP and CEP97, are correctly targeted and retained [5,6]. Defects in this regulation can lead to centrosome amplification, mitotic spindle defects, and genomic instability, which are hallmarks of cancer and are also implicated in neurodevelopmental disorders [1,2,3]. Understanding GO:1904779 therefore provides a framework for investigating how cells maintain centrosome homeostasis and how its disruption contributes to disease. This article synthesizes current knowledge on the mechanisms, key genes, and experimental models used to study regulation of protein localization to centrosome, with a focus on publication-ready insights for researchers.
regulation of protein localization to centrosome At A Glance
| GO ID | GO:1904779 |
|---|---|
| GO term | regulation of protein localization to centrosome |
| Ontology | biological_process |
| Synonym | regulation of protein localisation to centrosome |
| Major function | Modulates the delivery and retention of proteins at the centrosome, affecting centrosome assembly, maturation, and function. |
| Related processes | Centrosome cycle, mitotic spindle organization, ciliogenesis, cell cycle regulation. |
| Key regulators | CDK1, Aurora A, RACK1, BARD1, CPAP, CEP97. |
| Disease relevance | Cancer, neurodevelopmental disorders, ciliopathies. |
What Is GO:1904779?
GO:1904779, regulation of protein localization to centrosome, is defined as any process that modulates the frequency, rate or extent of protein localization to centrosome. In other words, it encompasses all molecular events that control how proteins are transported to, retained at, or removed from the centrosome, thereby influencing centrosome composition and function.
Why Is regulation of protein localization to centrosome Important in Cell Biology?
Regulation of protein localization to the centrosome is fundamental for proper centrosome function, which in turn is essential for accurate cell division, cell polarity, and signaling [1,4]. Disruption of this process leads to centrosome abnormalities that are observed in many human diseases, particularly cancer and neurodevelopmental disorders [1,2,3]. Thus, studying GO:1904779 provides mechanistic insights into disease pathogenesis and identifies potential therapeutic targets.
• Ensures proper centrosome assembly and maturation during the cell cycle [4,8].
• Controls mitotic spindle formation and chromosome segregation fidelity [1,7].
• Regulates ciliogenesis and developmental patterning.
• Dysregulation causes centrosome amplification, a hallmark of cancer [1,2].
• Mutations in centrosome proteins lead to neurodevelopmental disorders such as microcephaly.
• Provides targets for cancer therapy, e.g., CDK1 and Aurora A inhibitors [4,7].
• Involved in cell cycle checkpoint control and DNA damage response [2,4].
• Key for understanding stem cell self-renewal and differentiation.
• Links to ciliopathies through centriole length control [5,6].
• Offers biomarkers for cancer diagnosis and prognosis [1,2].
What Happens During regulation of protein localization to centrosome?
Recruitment of Centrosomal Proteins
In simple terms: Proteins are actively transported to the centrosome.
The first step in regulating protein localization to the centrosome is the recruitment of structural and regulatory proteins. This involves motor proteins and adaptor complexes that recognize targeting signals on cargo proteins. For example, RACK1 is a scaffold protein that facilitates the centrosomal localization of specific proteins, and its depletion leads to centrosome abnormalities. Similarly, BARD1, in cooperation with BRCA1, OLA1, and RACK1, is required for proper centrosome regulation.
Kinase-Mediated Phosphorylation
In simple terms: Enzymes add phosphate groups to proteins to control their movement to the centrosome.
Phosphorylation by cell cycle kinases is a major mechanism regulating protein localization to the centrosome. CDK1 activity at the centrosome is crucial for cell cycle progression and centrosome maturation. Aurora A kinase is targeted to the centrosome and regulates its function, including mitotic entry and spindle assembly. A cell cycle-dependent transition from acetylation to phosphorylation regulates timely centrosome maturation.
Centriole Length Control
In simple terms: The length of centrioles is carefully controlled by proteins that localize to the centrosome.
Proper centriole length is essential for centrosome function. CPAP insufficiency leads to incomplete centrioles that duplicate but fragment, highlighting the importance of CPAP localization and function. CDK1 and CEP97 cooperatively control centriole length to orchestrate ciliogenesis and developmental patterning. Thus, regulation of protein localization to the centrosome directly impacts centriole structure.
Cell Cycle Coordination
In simple terms: The process is timed with the cell cycle so that proteins arrive at the right moment.
The localization of proteins to the centrosome is tightly coordinated with the cell cycle. CDK activity at the centrosome regulates the cell cycle, ensuring that centrosome duplication and maturation occur once per cycle. Aurora A kinase activity peaks at mitosis and is required for centrosome separation and spindle assembly. This temporal control ensures genomic stability.
Feedback and Quality Control
In simple terms: Cells monitor and correct mistakes in protein localization to the centrosome.
Quality control mechanisms exist to prevent aberrant protein accumulation at the centrosome. For instance, the BARD1-BRCA1 complex, along with OLA1 and RACK1, plays a role in maintaining centrosome integrity, and its loss leads to centrosome amplification. The acetylation-to-phosphorylation switch also serves as a checkpoint for centrosome maturation.
Key Genes Involved in GO:1904779 regulation of protein localization to centrosome
The following genes and proteins are key regulators or components involved in the regulation of protein localization to the centrosome, as supported by published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| RACK1 | Scaffold protein that facilitates centrosomal localization of signaling proteins | Regulates centrosome integrity; implicated in carcinogenesis |
| BARD1 | Partners with BRCA1 to regulate centrosome function | Mutations linked to breast and ovarian cancer; required for centrosome regulation |
| BRCA1 | Tumor suppressor involved in DNA repair and centrosome regulation | Cooperation with BARD1/OLA1/RACK1 in centrosome regulation |
| OLA1 | Obg-like ATPase that interacts with BARD1 and BRCA1 | Involved in centrosome regulation and stress response |
| AKNA | Centrosome protein regulating microtubule organization | Regulates neurogenesis; mutations linked to neurodevelopmental disorders |
| CDK1 | Cyclin-dependent kinase that phosphorylates centrosomal substrates | Controls cell cycle and centrosome maturation; target for cancer therapy [4,6] |
| Aurora A | Mitotic kinase that localizes to centrosome | Regulates centrosome maturation, mitotic entry, and spindle assembly |
| CPAP | Centrosomal protein required for centriole elongation | Mutations cause microcephaly; insufficiency leads to centriole fragmentation |
| CEP97 | Centriolar protein controlling centriole length | Cooperates with CDK1 to regulate centriole length and ciliogenesis |
| PLK1 | Polo-like kinase 1, regulates centrosome maturation | Phosphorylates centrosomal proteins; target for cancer therapy |
| PLK4 | Master regulator of centriole duplication | Localization to centrosome is cell cycle regulated |
| CEP192 | Centrosomal scaffold protein | Required for centriole duplication and centrosome maturation |
| Pericentrin | Major centrosome scaffold protein | Mutations cause microcephalic dwarfism; regulates protein localization |
| γ-tubulin | Key component of the γ-tubulin ring complex | Nucleates microtubules; localization regulated by CDK1 |
| Ninein | Centrosomal protein involved in microtubule anchoring | Regulates centrosome positioning and cell polarity |
| Cep63 | Centrosomal protein required for centriole duplication | Mutations cause Seckel syndrome; regulates protein localization |
| SAS-6 | Centriolar protein essential for centriole formation | Localization regulated by PLK4 and CDK1 |
| CEP152 | Centrosomal protein involved in centriole duplication | Mutations cause microcephaly; regulates centrosome integrity |
How Is regulation of protein localization to centrosome Regulated?
The regulation of protein localization to the centrosome is itself controlled by multiple signaling pathways. CDK1 activity at the centrosome is a central regulator, and its inhibition prevents centrosome maturation. Aurora A kinase is activated at the centrosome and phosphorylates downstream targets to promote centrosome maturation and spindle assembly. A cell cycle-dependent switch from acetylation to phosphorylation regulates timely centrosome maturation, ensuring that proteins localize correctly. Additionally, the BARD1-BRCA1-OLA1-RACK1 complex modulates centrosome regulation in response to DNA damage and stress. These regulatory layers ensure that protein localization to the centrosome is tightly coupled to cell cycle progression and cellular stress responses.
regulation of protein localization to centrosome and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| RACK1 | Cancer (various solid tumors) | Knockout and overexpression in cancer cell lines |
| BARD1 | Breast and ovarian cancer | Knockout and point mutation models in breast epithelial cells |
| AKNA | Neurodevelopmental disorders | Knockout mouse models and neural stem cells |
| CPAP | Microcephaly | Knockout and knock-in of patient mutations in iPSCs |
| CEP97 | Ciliopathies and developmental patterning defects | Knockout and point mutation in zebrafish and cell lines |
Cancer
Dysregulation of protein localization to the centrosome leads to centrosome amplification, a common feature of many cancers. RACK1 is implicated in carcinogenesis through its role in centrosome regulation. BARD1 mutations are associated with breast and ovarian cancer, and loss of BARD1 function causes centrosome abnormalities. CDK1 and Aurora A are overexpressed in various cancers and are targets for therapeutic inhibition [4,7].
Neurodevelopmental Disorders
Proper centrosome function is critical for neurogenesis. The centrosome protein AKNA regulates neurogenesis via microtubule organization, and its disruption leads to neurodevelopmental defects. Mutations in CPAP cause microcephaly, and CPAP insufficiency results in incomplete centrioles that fragment. CEP152 mutations also cause microcephaly, highlighting the importance of centrosome protein localization in brain development.
Ciliopathies
Centriole length control is essential for ciliogenesis. CDK1 and CEP97 cooperatively control centriole length, and their dysfunction leads to ciliogenesis defects and developmental patterning abnormalities. CPAP insufficiency also affects centriole integrity, which can impact cilia formation.
From regulation of protein localization to centrosome-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does loss of RACK1 affect centrosome protein localization? | RACK1 knockout cell lines (e.g., HEK293T, HeLa) |
| Does BARD1 mutation disrupt centrosome regulation? | BARD1 point mutation knock-in in breast epithelial cells |
| How does AKNA regulate neurogenesis? | AKNA knockout mouse and neural stem cell models |
| What is the role of CDK1 in centrosome maturation? | CDK1 knockout and point mutation (kinase-dead) in cell lines |
| How does CPAP insufficiency lead to centriole fragmentation? | CPAP knockout and patient-derived iPSCs |
| Does CEP97 phosphorylation by CDK1 control centriole length? | CEP97 point mutation (phospho-deficient) knock-in in zebrafish |
How to Study the regulation of protein localization to centrosome Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Immunofluorescence | Colocalization of proteins with centrosome markers | Assessing localization changes upon gene knockout |
| Live-cell imaging | Dynamic movement of fluorescently tagged proteins | Tracking centrosome protein recruitment during cell cycle |
| Proteomics (AP-MS, BioID) | Protein-protein interactions and composition | Identifying novel centrosome regulators |
| CRISPR knockout | Loss-of-function effects on localization | Determining requirement of a gene for centrosome localization [1,2] |
| CRISPR knock-in (point mutation) | Effect of specific amino acid changes | Testing phosphorylation site function |
| Overexpression | Gain-of-function effects | Assessing sufficiency of a gene to drive localization |
| Cell cycle synchronization | Cell cycle stage-specific localization | Correlating localization with cell cycle phase [4,7] |
| RNA-seq | Transcriptional changes upon perturbation | Identifying compensatory pathways |
Fluorescence Microscopy
Immunofluorescence microscopy is the primary method to visualize protein localization to the centrosome. Co-staining with known centrosome markers (e.g., γ-tubulin, pericentrin) allows quantification of colocalization [1,2,4]. Live-cell imaging with fluorescently tagged proteins (e.g., GFP-CEP97) can track dynamic localization.
Proteomics
Mass spectrometry-based proteomics of isolated centrosomes can identify the composition and changes in protein localization under different conditions [1,8]. Proximity-dependent biotinylation (BioID) with centrosome-targeted bait proteins can reveal transient interactions.
Genetic Perturbation
CRISPR-Cas9 knockout, point mutation knock-in, and overexpression are used to test the function of candidate regulators. For example, RACK1 knockout leads to centrosome abnormalities, and BARD1 knockout causes centrosome amplification. These models are essential for causal inference.
Cell Cycle Analysis
Flow cytometry and synchronization methods are used to study cell cycle-dependent localization. CDK1 activity can be inhibited with specific inhibitors (e.g., RO-3306) to assess effects on centrosome protein localization [4,7].
How CRISPR Can Be Used to Study GO:1904779 regulation of protein localization to centrosome
Knockout
CRISPR knockout is used to completely abolish the expression of a gene to test its requirement for protein localization to the centrosome. For example, RACK1 knockout leads to centrosome abnormalities, demonstrating its essential role. BARD1 knockout causes centrosome amplification, linking it to cancer. These models are invaluable for loss-of-function studies.
Point Mutation
Point mutation knock-in allows the study of specific amino acid residues, such as phosphorylation sites. For instance, mutating CDK1 phosphorylation sites on CEP97 can reveal their role in centriole length control. This approach provides mechanistic insights without confounding effects of complete protein loss.
Knock-in
Knock-in of tagged versions of proteins (e.g., GFP, HA) enables visualization and purification of the protein of interest. This is useful for tracking localization dynamics and identifying interaction partners. Knock-in of disease-associated mutations can model human disorders.
Overexpression
Overexpression of wild-type or mutant proteins can test sufficiency and dominant-negative effects. For example, overexpressing Aurora A or CDK1 can drive premature centrosome maturation [4,7]. This approach complements loss-of-function studies.
How EDITGENE Supports regulation of protein localization to centrosome Research
Researchers studying regulation of protein localization to centrosome-related genes often need to determine whether a candidate gene is causally involved in this process or is merely correlated. CRISPR-based models provide the gold standard for establishing causality, and EDITGENE offers a comprehensive suite of services to accelerate this research.
Contact EDITGENE today to design your custom CRISPR model for regulation of protein localization to centrosome research.
Frequently Asked Questions About regulation of protein localization to centrosome
What is GO:1904779?
GO:1904779 is a Gene Ontology biological process term defined as any process that modulates the frequency, rate or extent of protein localization to centrosome.
What genes are involved in regulation of protein localization to centrosome?
Key genes include RACK1, BARD1, BRCA1, OLA1, AKNA, CDK1, Aurora A, CPAP, and CEP97, among others [1,2,3,4,5,6,7].
How is protein localization to the centrosome regulated?
It is regulated by phosphorylation by kinases such as CDK1 and Aurora A, scaffold proteins like RACK1, and cell cycle-dependent switches [1,4,7,8].
Why is regulation of protein localization to centrosome important?
It ensures proper centrosome function, which is critical for cell division, polarity, and development; its disruption causes cancer and neurodevelopmental disorders [1,2,3].
What diseases are associated with defects in centrosome protein localization?
Cancer, microcephaly, neurodevelopmental disorders, and ciliopathies are associated with defects in this process [1,2,3,5,6].
How can I study regulation of protein localization to centrosome?
Use immunofluorescence, live-cell imaging, proteomics, and CRISPR-based genetic perturbation (knockout, knock-in, overexpression) [1,2,4,6].
What is the role of CDK1 in centrosome regulation?
CDK1 activity at the centrosome regulates the cell cycle and centrosome maturation, and it phosphorylates substrates like CEP97 to control centriole length [4,6].
What is the role of Aurora A in centrosome regulation?
Aurora A is a mitotic kinase that localizes to the centrosome and regulates centrosome maturation, mitotic entry, and spindle assembly.
How does RACK1 regulate centrosome function?
RACK1 is a scaffold protein that facilitates the centrosomal localization of signaling proteins and is required for centrosome integrity; its loss leads to centrosome abnormalities.
What CRISPR models are available for studying centrosome protein localization?
Knockout, point mutation knock-in, tagged knock-in, and overexpression models can be generated to study gene function in this process [1,2,4,6].
Conclusion
Regulation of protein localization to the centrosome (GO:1904779) is a fundamental biological process that ensures proper centrosome function and genomic stability. Key regulators such as CDK1, Aurora A, RACK1, and BARD1 orchestrate the timely delivery of proteins to the centrosome, and their dysfunction is linked to cancer and neurodevelopmental disorders. CRISPR-based models are indispensable for dissecting these mechanisms, and EDITGENE provides comprehensive services to support this research.
References
- 1. Yoshino Y et al.. 2022. Roles of RACK1 in centrosome regulation and carcinogenesis.. Cell Signal 90:110207 PMID: 34843916
- 2. Otsuka K et al.. 2020. The Function of BARD1 in Centrosome Regulation in Cooperation with BRCA1/OLA1/RACK1.. Genes (Basel) 11(8) PMID: 32722046
- 3. Camargo Ortega G et al.. 2019. The centrosome protein AKNA regulates neurogenesis via microtubule organization.. Nature 567(7746):113-117 PMID: 30787442
- 4. Roberts EL et al.. 2024. CDK activity at the centrosome regulates the cell cycle.. Cell Rep 43(4):114066 PMID: 38578823
- 5. Vásquez-Limeta A et al.. 2022. CPAP insufficiency leads to incomplete centrioles that duplicate but fragment.. J Cell Biol 221(5) PMID: 35404385
- 6. Liu Y et al.. 2026. CDK1 and CEP97 cooperatively control centriole length to orchestrate ciliogenesis and developmental patterning.. Genes Dev 40(13-14):1133-1151 PMID: 42140673
- 7. Magnaghi-Jaulin L et al.. 2019. Aurora A Protein Kinase: To the Centrosome and Beyond.. Biomolecules 9(1) PMID: 30650622
- 8. Li J et al.. 2026. A cell cycle-dependent transition of acetylation to phosphorylation regulates timely centrosome maturation.. Nat Commun 17(1) PMID: 41862458
