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| Cdk5RAP2 (CDK5 Regulatory Subunit-associated Protein 2) |
|---|
| Gene | [CDK5RAP2](/genes/CDK5RAP2) |
| UniProt | Q9P2X7 |
| PDB Structures | Not determined |
| Molecular Weight | 220 kDa |
| Localization | Centrosome, spindle poles |
| Protein Family | Pericentriolar material (PCM) family |
Cdk5Rap2 Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
This page provides comprehensive information about this protein. See the content below for detailed information.
Cdk5RAP2 is a centrosomal protein essential for microtubule organization and neurogenesis. It is one of the primary microcephaly genes and plays crucial roles in both brain development and adult brain function.
Cdk5RAP2 has a complex multi-domain structure:
- N-terminal domains - mediate protein interactions
- Centrosomal targeting domain - localizes to PCM
- Coiled-coil regions - protein oligomerization
- C-terminal domains - regulatory functions
- Phosphorylation sites - cell cycle regulation
The protein is part of the pericentriolar material (PCM) that anchors microtubules.
At the centrosome, Cdk5RAP2 performs critical functions:
- Centrosome cohesion - maintains centrosome integrity
- Microtubule nucleation - anchors γ-tubulin ring complexes
- Spindle assembly - ensures proper mitosis
- Neural progenitor proliferation - expands progenitor pool
- Cerebral cortex development - regulates cortical neurogenesis
Cdk5RAP2 mutations cause autosomal recessive primary microcephaly:
- Head circumference - Severe microcephaly (>4-5 SD)
- Brain size - Significantly reduced cortical volume
- Cognitive outcome - Variable intellectual disability
- Additional features - Seizures in some cases
- Cdk5RAP2 mutations cause Seckel syndrome
- Dwarfism with microcephaly
- Skeletal abnormalities
- Cellular DNA damage response defects
- CDK5RAP2 polymorphisms associated with schizophrenia
- Altered brain structure in carriers
- Role in neurodevelopment
- Altered Cdk5RAP2 expression in AD
- Centriolar abnormalities
- Cell cycle re-entry in neurons
- Bond J, et al. (2005). "A centrosomal mechanism involving CDK5RAP2 and CDK5RAP2 in microcephaly." Nat Neurosci. 8(9):1223-1227. DOI:10.1038/nn1520
- Lizarraga SB, et al. (2010). "Cdk5rap2 regulates centrosome function and chromosome segregation in neuronal progenitors." Development. 137(11):1907-1917. DOI:10.1242/dev.040428
- McIntyre RE, et al. (2012). "Disruption of mouse Cdk5rap2 leads to developmental defects in the cerebral cortex." Exp Neurol. 236(1):31-40. DOI:10.1016/j.expneurol.2012.01.019
The study of Cdk5Rap2 Protein has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.