Smac Diablo 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.
| SMAC/DIABLO | |
|---|---|
| Protein Name | SMAC/DIABLO (Second Mitochondria-Derived Activator of Caspases) |
| Gene | DIABLO |
| UniProt ID | Q9NR28 |
| PDB ID | 1OX6, 1OX8 |
| Molecular Weight | 25 kDa (dimer: 50 kDa) |
| Subcellular Localization | Mitochondrial intermembrane space |
| Protein Family | IAP antagonist family |
This page provides comprehensive information about the subject's role in neurodegenerative diseases. The subject participates in various molecular pathways and cellular processes relevant to Alzheimer's disease, Parkinson's disease, and related conditions.
SMAC/DIABLO is synthesized as a precursor with an N-terminal mitochondrial targeting sequence that is cleaved upon import to generate the mature protein. The mature protein forms a homodimer. The N-terminal tetrapeptide motif (AVPI) is crucial for binding to IAP proteins.
SMAC/DIABLO's normal cellular function is not well characterized. It is stored in the mitochondrial intermembrane space and released during apoptosis. The protein has no enzymatic activity—its function is purely regulatory.
SMAC/DIABLO promotes apoptosis by neutralizing Inhibitor of Apoptosis Proteins (IAPs). Upon release from mitochondria, it binds to IAPs (XIAP, cIAP1, cIAP2) through its N-terminal AVPI motif, displacing caspases and promoting caspase activation.
The study of Smac Diablo 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.