FANCC (Fanconi Anemia Group C Protein) is a crucial component of the Fanconi Anemia (FA) DNA repair pathway. While classically associated with Fanconi Anemia, this protein has emerged as relevant to neurodegenerative diseases due to its roles in DNA repair, oxidative stress response, and cellular survival.
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| Fanconi Anemia Group C Protein |
|---|
| Protein Name | Fanconi Anemia Group C Protein |
| Alternative Names | FANCC |
| Molecular Weight | 63 kDa |
| Length | 558 amino acids |
| UniProt ID | [Q00597](https://www.uniprot.org/uniprot/Q00597) |
| Cellular Location | Nucleus/Cytoplasm |
¶ Gene and Protein Structure
The FANCC gene is located on chromosome 9q22.3 and encodes a protein of 558 amino acids. It is one of 22 FANC genes identified in the Fanconi Anemia pathway.
¶ Protein Domains
FANCC contains several functional domains:
- N-terminal domain: Mediates protein-protein interactions
- Central region: Forms the FA core complex
- C-terminal domain: Required for complex formation and function
- Nuclear localization signals: Directs nuclear import
FANCC is essential for the FA DNA repair pathway:
- FA core complex: Part of the multi-protein complex that senses DNA damage
- Checkpoint activation: Mediates ATM/ATR signaling in response to DNA damage
- Interstrand crosslink repair: Essential for resolving ICLs
- Monoubiquitination: Required for FANCD2 activation
- Oxidative stress response: Protects against ROS-induced DNA damage
- Apoptosis regulation: Controls programmed cell death pathways
- Stem cell maintenance: Important for hematopoietic stem cell function
FANCC has relevance to PD through DNA repair:
- Neuronal vulnerability: Dopaminergic neurons have high oxidative stress
- DNA damage accumulation: Impaired repair contributes to neuronal death
- Mitochondrial dysfunction: Cross-talk with mitochondrial DNA repair
- Genetic variants: May modify PD risk
In AD, FANCC plays roles in:
- DNA repair deficits: Accumulation of DNA damage in AD brains
- Oxidative stress: Chronic oxidative damage to neurons
- Neuronal survival: Failed DNA repair leads to apoptosis
- Amyotrophic Lateral Sclerosis: DNA repair dysfunction
- Huntington's Disease: Impaired DNA repair mechanisms
FANCC pathway activation may provide neuroprotection:
- FA pathway activation: Small molecule activators
- DNA repair enhancement: Boosting repair capacity in neurons
- Antioxidant strategies: Reducing oxidative DNA damage
- DNA damage markers: As indicators of repair capacity
- Genetic variants: Risk stratification