Map7 Microtubule Associated Protein 7 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
{{infobox .infobox-gene}}
| Property | Value |
|---|---|
| Gene Symbol | MAP7 |
| Full Name | Microtubule Associated Protein 7 |
| Chromosomal Location | 5q31.2 |
| NCBI Gene ID | 9053 |
| OMIM ID | 604526 |
| Ensembl ID | ENSG00000116983 |
| UniProt ID | Q9Y5H5 |
| Associated Diseases | ALS, Charcot-Marie-Tooth Disease, [Neurodegeneration](/diseases/neu |
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.
rodegeneration), Amyotrophic Lateral Sclerosis |
MAP7 (Microtubule-Associated Protein 7), also known as Ensconsin, is a microtubule-associated protein that plays crucial roles in microtubule organization, intracellular transport, and neuronal morphogenesis. MAP7 promotes microtubule polymerization and stabilizes microtubule networks through direct binding to tubulin dimers and polymerized microtubules.
MAP7 interacts with microtubules through multiple mechanisms:
MAP7 plays a critical role in intracellular transport by:
MAP7 is essential for establishing and maintaining neuronal polarity:
MAP7 is a 674-amino acid protein with multiple functional domains:
| Domain | Position | Function |
|---|---|---|
| N-terminal domain | 1-150 | Microtubule binding |
| Coiled-coil region | 150-400 | Dimerization, cargo binding |
| KLC-binding domain | 400-550 | Kinesin light chain interaction |
| C-terminal domain | 550-674 | Microtubule stabilization |
MAP7 undergoes alternative splicing, producing multiple isoforms:
MAP7 mutations have been linked to familial ALS through several mechanisms:
A notable MAP7 variant (p.Arg525His) was identified in ALS patients, demonstrating reduced microtubule binding and kinesin recruitment 1.
MAP7 variants cause demyelinating and axonal forms of CMT:
MAP7 dysfunction contributes to general neurodegenerative mechanisms:
MAP7 deficiency directly impairs axonal transport:
Proper mitochondrial distribution requires MAP7:
MAP7 is critical for synaptic maintenance:
Several approaches target MAP7-related pathways:
Future therapeutic strategies include:
| Partner | Interaction | Function |
|---|---|---|
| TUBA1A | Direct binding | Microtubule polymerization |
| TUBB | Direct binding | Microtubule stability |
| KIF5B | KLC binding | Anterograde transport |
| KIF5C | KLC binding | Neuron-specific transport |
| MAP1A | Co-regulation | Microtubule organization |
| MAP2 | Co-regulation | Dendritic microtubules |
| TAU | Competition | Microtubule binding |
MAP7 is an essential microtubule-associated protein that promotes microtubule polymerization, recruits kinesin motors, and supports neuronal morphogenesis. Mutations cause ALS and Charcot-Marie-Tooth disease through disrupted axonal transport, mitochondrial dysfunction, and synaptic degeneration. Understanding MAP7 function provides insights into microtubule-based transport mechanisms in neurodegeneration.
The study of Map7 Microtubule Associated Protein 7 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.