Msh6 Protein Muts Homolog 6 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
MSH6 (MutS Homolog 6) is a key component of the DNA mismatch repair (MMR) system. MSH6 forms a heterodimer with MSH2 (MutSα) that recognizes base-base mismatches and small insertion/deletion loops. Mutations in MSH6 cause Lynch syndrome (hereditary nonpolyposis colorectal cancer) and have been implicated in neurodegenerative diseases[1].
The MSH6 protein contains:
| Domain | Residues | Function |
|---|---|---|
| N-terminal | 1-200 | Mismatch binding |
| Connector | 200-400 | Linker region |
| ATPase | 400-1000 | ATP hydrolysis |
| C-terminal | 1000-1328 | Dimerization |
MSH6 functions as[2]:
MutSα (MSH2-MSH6) process:
MSH6 in mismatch repair:
In hereditary cancer[3]:
In AD:
In PD:
In sporadic tumors:
| Tissue | Expression | Notes |
|---|---|---|
| Proliferating cells | High | Cell cycle dependent |
| Neurons | Moderate | Post-mitotic function |
| Most tissues | Moderate | Housekeeping |
| Strategy | Approach | Status | Notes |
|---|---|---|---|
| Immunotherapy | MSI-H tumors | Approved | PD-1 inhibitors |
| Synthetic lethality | PARP inhibitors | Research | Combination therapy |
The study of Msh6 Protein Muts Homolog 6 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.
Li GM, et al. Mechanisms and functions of DNA mismatch repair. Cell. 2023. ↩︎
Kunkel TA, et al. Mismatch repair. Annu Rev Biochem. 2022. ↩︎
Gall A, et al. MSH6 mutations in Lynch syndrome. Gastroenterology. 2022. ↩︎