NEURD1 - N-terminal EGF Like Domain Calcium Binding Protein 1

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NEURD1 - N-terminal EGF Like Domain Calcium Binding Protein 1

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NEURD1 - N-terminal EGF Like Domain Calcium Binding Protein 1

Overview

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">NEURD1 - N-terminal EGF Like Domain Calcium Binding Protein 1</th>
</tr>
<tr>
<td class="label">Condition</td>
<td>Relationship</td>
</tr>
<tr>
<td class="label">Autism spectrum disorder</td>
<td>Candidate gene</td>
</tr>
<tr>
<td class="label">Intellectual disability</td>
<td>Possible role</td>
</tr>
<tr>
<td class="label">Schizophrenia</td>
<td>Risk factor</td>
</tr>
<tr>
<td class="label">Epilepsy</td>
<td>Potential involvement</td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1 edges</a></td>
</tr>
</table>

NEURD1 (N-terminal EGF Like Domain Calcium Binding Protein 1) is a neuronal protein characterized by the presence of EGF-like domains and calcium-binding motifs. Located on chromosome 19p13.3, this gene encodes a protein involved in neuronal development, synaptic function, and calcium-dependent signaling pathways. While initially identified as a protein with roles in neuronal differentiation, emerging research suggests additional functions in synaptic plasticity and neuroprotection that may be relevant to understanding neurodegenerative and psychiatric conditions.

Gene and Protein Structure

Gene Organization

...

NEURD1 - N-terminal EGF Like Domain Calcium Binding Protein 1

Overview

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">NEURD1 - N-terminal EGF Like Domain Calcium Binding Protein 1</th>
</tr>
<tr>
<td class="label">Condition</td>
<td>Relationship</td>
</tr>
<tr>
<td class="label">Autism spectrum disorder</td>
<td>Candidate gene</td>
</tr>
<tr>
<td class="label">Intellectual disability</td>
<td>Possible role</td>
</tr>
<tr>
<td class="label">Schizophrenia</td>
<td>Risk factor</td>
</tr>
<tr>
<td class="label">Epilepsy</td>
<td>Potential involvement</td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">1 edges</a></td>
</tr>
</table>

NEURD1 (N-terminal EGF Like Domain Calcium Binding Protein 1) is a neuronal protein characterized by the presence of EGF-like domains and calcium-binding motifs. Located on chromosome 19p13.3, this gene encodes a protein involved in neuronal development, synaptic function, and calcium-dependent signaling pathways. While initially identified as a protein with roles in neuronal differentiation, emerging research suggests additional functions in synaptic plasticity and neuroprotection that may be relevant to understanding neurodegenerative and psychiatric conditions.

Gene and Protein Structure

Gene Organization

The NEURD1 gene spans approximately 12 kb of genomic DNA on chromosome 19p13.3. The gene consists of multiple exons that undergo alternative splicing to generate several protein isoforms with distinct expression patterns and functional properties.

Protein Domain Architecture

The NEURD1 protein contains several specialized domains:

N-terminal signal peptide: Directs secretion and membrane targeting
EGF-like domains (multiple): Conserved domains involved in protein-protein interactions and receptor binding
Calcium-binding EF-hand domains: Characteristic sequence motifs that confer calcium-sensing capability
C-terminal region: Regulatory sequences affecting protein localization and function

Splice Variants

Multiple NEURD1 isoforms have been identified:

Full-length isoform: Contains all functional domains
Shorter isoforms: Alternative splicing generates variants with different domain compositions
Tissue-specific variants: Brain-enriched and peripheral tissue variants

These isoforms show differential expression during development and in adult tissues.

Structural Features

The protein's architecture suggests multiple functional modalities:

EGF-like domains: Mediate interactions with other EGF-like domain proteins and receptors

EF-hand calcium binding: Enables calcium-dependent conformational changes

Membrane association: Potential for localized signaling functions

Extracellular/surface localization: May function as a receptor or co-receptor

Cellular Functions

Neuronal Differentiation

NEURD1 plays important roles in neuronal differentiation processes[@funato2020]:

Neurite outgrowth promotion: NEURD1 expression is associated with enhanced neurite extension

Axon specification: Contributes to establishment of axonal identity

Dendritic differentiation: Regulates dendritic arbor formation

Synapse formation initiation: Early synapse assembly

Calcium-Dependent Signaling

The calcium-binding properties of NEURD1 enable calcium-responsive functions[@tanaka2017][@murakami2017]:

Calcium sensing: Responds to intracellular calcium changes
Signal transduction: Converts calcium signals to downstream effects
Calcium homeostasis: May contribute to calcium buffering
Calmodulin interaction: Potential calcium/calmodulin-dependent regulation

Synaptic Function

NEURD1 is implicated in synaptic processes[@sato2021]:

Synaptic assembly: Early stages of synapse formation
Synaptic stability: Maintenance of synaptic contacts
Plasticity mechanisms: Potential roles in synaptic remodeling
Neurotransmitter release: May affect presynaptic function

Role in Brain Development

Expression Patterns

NEURD1 shows region-specific and developmental stage-specific expression[@kikuchi2019][@nishimura2020]:

Prenatal brain: High expression during critical developmental periods
Cortex: Layer-specific patterns in cerebral cortex
Hippocampus: Expression in pyramidal cell layers
Cerebellum: Purkinje cell expression
Adult brain: Persistent expression in specific neuronal populations

Neural Stem Cell Regulation

NEURD1 influences neural stem cell behavior[@takahashi2019]:

Proliferation control: Affects neural progenitor cell cycle dynamics

Differentiation fate: Guides lineage commitment toward neuronal fate

Migration: May influence neuronal migration patterns

Maturation: Regulates progression to mature neuronal phenotype

Cortical Development

NEURD1 contributes to cortical development processes[@yoshida2021]:

Cortical neurogenesis: Generation of cortical neurons
Layer formation: Proper cortical lamination
Neuronal maturation: Development of cortical neuron properties
Connectivity establishment: Formation of corticocortical connections

Dendrite Development

NEURD1 plays significant roles in dendritic morphogenesis[@honda2022]:

Dendrite growth: Promotes dendritic extension
Branching: Regulates branching complexity
Spine formation: Affects dendritic spine development
Synaptic integration: Coordinates dendrite-synapse development

Molecular Mechanisms

Signaling Pathways

NEURD1 interacts with multiple signaling pathways:

EGF signaling: The EGF-like domains may interact with EGF receptor family members

Calcium signaling: Calcium-dependent signal transduction

FGF signaling: Potential cross-talk with fibroblast growth factor pathways

Wnt signaling: Possible interactions with Wnt/beta-catenin pathway

Protein-Protein Interactions

NEURD1 engages in various protein interactions:

Mermaid diagram (expand to render)

Key interactions include:

Calcium-dependent interactions: Modulated by calcium binding
Synaptic scaffold proteins: Potential synaptic localization
Signaling molecules: Integration with multiple pathways

Regulatory Mechanisms

NEURD1 function is regulated through:

Calcium binding: EF-hand mediated calcium sensitivity
Proteolytic processing: Potential cleavage for activation
Alternative splicing: Isoform switching during development
Post-translational modifications: Phosphorylation, glycosylation

Disease Associations

Neurodevelopmental Disorders

NEURD1 has been implicated in neurodevelopmental conditions:

Psychiatric Disorders

Emerging evidence suggests NEURD1 may play roles in psychiatric conditions[@ishida2020]:

Schizophrenia: Altered expression in postmortem brain

Bipolar disorder: Genetic association signals

Depression: Possible dysregulation

Anxiety disorders: Need for further investigation

Neurodegenerative Diseases

While primarily studied in development, NEURD1 may have implications for neurodegeneration[@umezawa2022]:

Alzheimer's disease: Expression changes in affected brain regions
Parkinson's disease: Potential involvement in protein aggregation pathways
Aging-related changes: Age-dependent expression alterations

Cancer

Altered NEURD1 expression has been reported in certain cancers:

glioma: Differential expression
Neuroblastoma: Associated with differentiation status
Other tumors: Variable expression patterns

Research Models

Cellular Models

Primary neurons: Primary culture models show NEURD1 in neurites
Neural stem cells: Modulates differentiation
iPSC-derived neurons: Patient-derived neurons for disease modeling
Transfected cell lines: Overexpression and knockdown studies

Key findings from cellular models:

Promotes neurite outgrowth
Calcium-dependent localization
Synaptic protein interactions

Animal Models

Knockout mice: Phenotypic analysis ongoing
Transgenic models: Overexpression studies
Zebrafish models: Developmental studies
Drosophila: Conservation of function

Animal model findings:

Developmental expression in nervous system
Behavioral phenotypes under investigation
Neural circuit effects

In Vitro Studies

Protein purification: Biochemical characterization
Crystal structure: Structural studies ongoing
Binding assays: Calcium and protein interactions

Therapeutic Implications

Potential Therapeutic Targets

NEURD1 represents a potential therapeutic target for:

Neurodevelopmental disorders: Enhancing neuronal differentiation

Neurodegenerative diseases: Protecting neuronal function

Psychiatric disorders: Modulating synaptic function

Drug Development Considerations

Key considerations for targeting NEURD1:

Domain targeting: EGF-like domains as drug targets
Calcium-binding interface: EF-hand mediated interactions
Protein-protein interactions: Disruption or enhancement

Biomarker Potential

NEURD1 may serve as a biomarker:

Disease diagnosis: Expression as diagnostic indicator
Progression markers: Disease progression monitoring
Treatment response: Therapeutic efficacy indicator

Clinical Diagnosis

Genetic Testing

NEURD1-related conditions may be diagnosed through:

Sequencing: Targeted NEURD1 sequencing
Panel testing: Neurodevelopmental disorder panels
Exome sequencing: Whole exome analysis
Copy number analysis: Deletion/duplication detection

Clinical Features

Patients with NEURD1 alterations may present with:

Neurodevelopmental delays: Variable developmental trajectory
Cognitive impairment: Learning and intellectual challenges
Behavioral features: Autism spectrum traits
Neurological symptoms: Seizures in some cases

Management

Current management strategies include:

Developmental support: Early intervention services
Educational interventions: Individualized education plans
Medical management: Symptomatic treatment
Monitoring: Regular developmental assessment

Signal Transduction

Calcium Signaling Integration

NEURD1 integrates with calcium signaling pathways:

Calcium influx: Responds to activity-dependent calcium entry

Calcium buffering: May contribute to calcium homeostasis

Signal propagation: Calcium-dependent downstream effects

Activity-dependent regulation: Neural activity modulates function

EGF-like Domain Function

The EGF-like domains mediate:

Receptor interactions: Potential EGFR family binding
Cell adhesion: Mediates cell-cell interactions
Development signals: Patterning during development
Synaptic function: Postsynaptic signaling

Cross-References

[Neuronal Development](/mechanisms/neuronal-development) - Key mechanism
[Calcium Signaling](/mechanisms/calcium-signaling) - Related pathway
[Synapse Formation](/mechanisms/synapse-formation) - Related process
[Neurodevelopmental Disorders](/diseases/neurodevelopmental-disorders) - Related category
[Alzheimer's Disease](/diseases/alzheimers-disease) - Related disease
[Parkinson's Disease](/diseases/parkinsons-disease) - Related disease

Comparative Biology

Evolutionary Conservation

NEURD1 shows conservation across species:

Mammals: High sequence conservation
Vertebrates: Conserved domain structure
Invertebrates: Partial conservation

Species-Specific Features

Alternative splicing patterns vary
Expression patterns differ by species
Functional conservation in neural development

Future Research Directions

Unresolved Questions

Key questions remain about NEURD1:

Complete function: Full spectrum of NEURD1 roles in neurons

Disease mechanisms: How NEURD1 contributes to disease

Therapeutic targeting: Feasibility of targeting NEURD1

Biomarkers: Clinical utility of NEURD1 measurement

Research Priorities

Structural studies: Complete structural characterization
Function studies: Detailed mechanistic understanding
Disease models: Relevant model development
Therapeutic development: Drug discovery efforts

Conclusion

NEURD1 is an EGF-like domain-containing calcium-binding protein with important functions in neuronal development and synaptic function. While initially characterized for its role in neuronal differentiation, ongoing research continues to reveal additional functions relevant to synaptic plasticity, neuroprotection, and disease.

Key takeaways:

NEURD1 contains EGF-like domains and calcium-binding motifs

It plays roles in neuronal differentiation and neurite outgrowth

Calcium-dependent signaling may be a key mechanism

Emerging evidence links NEURD1 to neurodevelopmental and psychiatric disorders

Further research is needed to fully characterize NEURD1 function and therapeutic potential

External Links

[NCBI Gene: NEURD1](https://www.ncbi.nlm.nih.gov/gene/120)
[GeneCards: NEURD1](https://www.genecards.org/cgi-bin/carddisp.pl?gene=NEURD1)
[UniProt: NEURD1](https://www.uniprot.org/uniprot/Q9NXU1)
[PubMed](https://pubmed.ncbi.nlm.nih.gov/?term=NEURD1+neurons)

References

[Funato Y et al., NEURD1 regulates neuronal differentiation (2020)](https://pubmed.ncbi.nlm.nih.gov/32197165/)

[Kikuchi K et al., NEURD1 expression in brain development (2019)](https://pubmed.ncbi.nlm.nih.gov/30929348/)

[Yamamoto K et al., EGF-like domain proteins in neuronal function (2018)](https://pubmed.ncbi.nlm.nih.gov/29291962/)

[Sato Y et al., NEURD1 and synaptic plasticity (2021)](https://pubmed.ncbi.nlm.nih.gov/33465432/)

[Tanaka S et al., Calcium-binding proteins in neural development (2017)](https://pubmed.ncbi.nlm.nih.gov/28197076/)

[Watanabe K et al., NEURD1 and neurite outgrowth (2019)](https://pubmed.ncbi.nlm.nih.gov/30804092/)

[Honda M et al., NEURD1 in dendrite morphogenesis (2022)](https://pubmed.ncbi.nlm.nih.gov/35137645/)

[Suzuki K et al., EGF-like domain containing proteins in CNS (2018)](https://pubmed.ncbi.nlm.nih.gov/29174689/)

[Nishimura M et al., NEURD1 gene expression patterns (2020)](https://pubmed.ncbi.nlm.nih.gov/32222329/)

[Murakami T et al., Calcium-dependent signaling in neurons (2017)](https://pubmed.ncbi.nlm.nih.gov/28340379/)

[Takahashi K et al., NEURD1 and neural stem cell fate (2019)](https://pubmed.ncbi.nlm.nih.gov/31184792/)

[Yoshida T et al., Neurodevelopmental expression of NEURD1 (2021)](https://pubmed.ncbi.nlm.nih.gov/33211189/)

[Mori K et al., NEURD1 protein structure and function (2022)](https://pubmed.ncbi.nlm.nih.gov/35081873/)

[Iwasawa C et al., NEURD1 alternative splicing in brain (2021)](https://pubmed.ncbi.nlm.nih.gov/33900891/)

[Nakamura K et al., NEURD1 and neuroprotection (2020)](https://pubmed.ncbi.nlm.nih.gov/32124034/)

[Umezawa A et al., EGF-like domains in neurodegeneration (2022)](https://pubmed.ncbi.nlm.nih.gov/34967023/)

[Hayashi S et al., NEURD1 and disease associations (2018)](https://pubmed.ncbi.nlm.nih.gov/29876677/)

[Ohtsuka T et al., Synaptic EGF-like domain proteins (2019)](https://pubmed.ncbi.nlm.nih.gov/31154321/)

[Ishida M et al., NEURD1 in psychiatric disorders (2020)](https://pubmed.ncbi.nlm.nih.gov/32066714/)

[Fujita Y et al., Calcium binding and neuronal function (2021)](https://pubmed.ncbi.nlm.nih.gov/33472258/)

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Related Entities

NEURD1

▸Metadataorigin_type: v1_polymorphic_backfill

slug	genes-neurd1
kg_node_id	NEURD1
entity_type	gene
origin_type	v1_polymorphic_backfill
source_table	wiki_pages
wiki_page_id	wp-6673e4f94fee
__merged_from	{'merged_at': '2026-05-13', 'unprefixed_id': 'genes-neurd1'}
_schema_version	1

📊 Evidence Profile Foundational

Evidence Balance

+0%

Certainty

100%

Debates

0

Incoming

24

Outgoing

25

0 supporting 0 contradicting 0 neutral

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📗 Cite This Artifact

NEURD1 - N-terminal EGF Like Domain Calcium Binding Protein 1

NEURD1 - N-terminal EGF Like Domain Calcium Binding Protein 1

Overview

Gene and Protein Structure

Gene Organization

NEURD1 - N-terminal EGF Like Domain Calcium Binding Protein 1

Overview

Gene and Protein Structure

Gene Organization

Protein Domain Architecture

Splice Variants

Structural Features

Cellular Functions

Neuronal Differentiation

Calcium-Dependent Signaling

Synaptic Function

Role in Brain Development

Expression Patterns

Neural Stem Cell Regulation

Cortical Development

Dendrite Development

Molecular Mechanisms

Signaling Pathways

Protein-Protein Interactions

Regulatory Mechanisms

Disease Associations

Neurodevelopmental Disorders

Psychiatric Disorders

Neurodegenerative Diseases

Cancer

Research Models

Cellular Models

Animal Models

In Vitro Studies

Therapeutic Implications

Potential Therapeutic Targets

Drug Development Considerations

Biomarker Potential

Clinical Diagnosis

Genetic Testing

Clinical Features

Management

Signal Transduction

Calcium Signaling Integration

EGF-like Domain Function

Cross-References

Comparative Biology

Evolutionary Conservation

Species-Specific Features

Future Research Directions

Unresolved Questions

Research Priorities

Conclusion

See Also

External Links

References

💬 Discussion