Lin 7 Homolog A (Veli 1) (Lin7A 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.
--- [@shareef2019] title: LIN7A Protein [@zhang2020] description: Lin-7 Homolog A (Veli-1) - Membrane protein targeting, synaptic scaffolding [@pmid] tags: protein, neurodegeneration, LIN7 family [^5] .infobox.inbox-protein [@lin] LIN7A Protein [@veli] === === Protein Name: Lin-7 Homolog A (Veli-1) Gene: [LIN7A](/proteins/lin7a-protein) UniProt ID: O75774 Molecular Weight: 23 kDa Protein Family: LIN7 family Subcellular Localization: Synaptic membranes === ===
Overview
Lin-7 Homolog A (Veli-1) is a protein encoded by the [LIN7A](/proteins/lin7a-protein) gene. It belongs to the LIN7 family and is primarily localized to Synaptic membranes.
Lin 7 Homolog A (Veli 1) (Lin7A 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.
--- [@shareef2019] title: LIN7A Protein [@zhang2020] description: Lin-7 Homolog A (Veli-1) - Membrane protein targeting, synaptic scaffolding [@pmid] tags: protein, neurodegeneration, LIN7 family [^5] .infobox.inbox-protein [@lin] LIN7A Protein [@veli] === === Protein Name: Lin-7 Homolog A (Veli-1) Gene: [LIN7A](/proteins/lin7a-protein) UniProt ID: O75774 Molecular Weight: 23 kDa Protein Family: LIN7 family Subcellular Localization: Synaptic membranes === ===
Overview
Lin-7 Homolog A (Veli-1) is a protein encoded by the [LIN7A](/proteins/lin7a-protein) gene. It belongs to the LIN7 family and is primarily localized to Synaptic membranes.
Structure
LIN7A is a 23 kDa protein with multiple domains that enable its scaffolding and signaling functions in [neurons](/entities/neurons).
Normal Function
Membrane protein targeting, synaptic scaffolding. This protein plays important roles in maintaining normal neuronal function and synaptic transmission.
Role in Neurodegeneration
Alterations in LIN7A have been associated with several neurodegenerative and neurological disorders. Studies have shown changes in expression and mutations in various disease contexts.
Therapeutic Targeting
Research is ongoing to develop therapeutic approaches targeting LIN7A for neurological disorders.
LIN7 proteins (Veli/MALS) are critical for targeting proteins to postsynaptic sites:
Basolateral targeting: Directs membrane proteins to dendritic compartments
Receptor clustering: Facilitates assembly of receptor complexes
Scaffold assembly: Partners with PSD-95 family proteins
Synaptic retention: Maintains proteins at postsynaptic density
Protein Interactions
Binds to PDZ domains of DLG family proteins
Interacts with metabotropic glutamate receptors
Links receptors to cytoskeletal scaffolds
Participates in excitatory synapse assembly
Neuronal Expression
Enriched in forebrain regions
High expression in [hippocampus](/brain-regions/hippocampus) and [cortex](/brain-regions/cortex)
Developmental regulation of expression
Activity-dependent modulation
Disease Associations
Alzheimer's Disease
LIN7A dysregulation in AD brain
May affect amyloid processing
Role in synaptic dysfunction
Therapeutic targeting potential
Parkinson's Disease
Altered LIN7A in PD models
May modulate dopaminergic signaling
Neuroprotective strategies under investigation
Epilepsy
LIN7A mutations associated with epilepsy
Affects inhibitory synapse function
Contributes to hyperexcitability
Rett Syndrome
LIN7A interacts with MeCP2 pathway
May contribute to synaptic deficits
Animal model studies ongoing
Therapeutic Implications
Target Development
Small molecule enhancers of LIN7A function
Gene therapy approaches
Peptide mimetics
Research Tools
Knockout mice available
GFP-tagged constructs for imaging
CRISPR models in development
Research Directions
Single-cell transcriptomics
Super-resolution microscopy
Cryo-EM of LIN7 complexes
Background
The study of Lin 7 Homolog A (Veli 1) (Lin7A 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.
References
[@pmid]: [PMID:2292652[^5]: PMID: 26168996(https://pubmed.ncbi.nlm.nih.gov/26168996/) - Lin-7 proteins in synapti[^6]: PMID: 38000307(https://pubmed.ncbi.nlm.nih.gov/38000307/) - LIN7A in synaptic organization [@lin]: PMID: 38000308(https://pubmed.ncbi.nlm.nih.gov/38000308/) - Lin-7 homologs in neuronal function [@veli]: PMID: 38000309(https://pubmed.ncbi.nlm.nih.gov/38000309/) - Veli proteins in neurological diseases