NBR1 Gene

NBR1 Gene

Overview

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">NBR1 Gene</th>
</tr>
<tr>
<td class="label">Gene Symbol</td>
<td>NBR1</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Neighbor of BRCA1 Gene 1</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>17q21.31</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>10327</td>
</tr>
<tr>
<td class="label">OMIM</td>
<td>605085</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000132716</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>Q14596</td>
</tr>
<tr>
<td class="label">Cell Type</td>
<td>Expression Level</td>
</tr>
<tr>
<td class="label">[Neurons](/entities/neurons)</td>
<td>High</td>
</tr>
<tr>
<td class="label">[Astrocytes](/entities/astrocytes)</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">[Microglia](/entities/microglia)</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Oligodendrocytes</td>
<td>Low</td>
</tr>
<tr>
<td class="label">Endothelial cells</td>
<td>Low</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/ad" style="color:#ef9a9a">AD</a>, <a href="/wiki/ali" style="color:#ef9a9a">ALI</a>, <a href="/wiki/als" style="color:#ef9a9a">ALS</a>, <a href="/wiki/ami" style="color:#ef9a9a">AMI</a>, <a href="/wiki/aging" style="color:#ef9a9a">Aging</a></td>
</tr>
<tr>
<td class="label">KG Connections

NBR1 Gene

Overview

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">NBR1 Gene</th>
</tr>
<tr>
<td class="label">Gene Symbol</td>
<td>NBR1</td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>Neighbor of BRCA1 Gene 1</td>
</tr>
<tr>
<td class="label">Chromosomal Location</td>
<td>17q21.31</td>
</tr>
<tr>
<td class="label">NCBI Gene ID</td>
<td>10327</td>
</tr>
<tr>
<td class="label">OMIM</td>
<td>605085</td>
</tr>
<tr>
<td class="label">Ensembl ID</td>
<td>ENSG00000132716</td>
</tr>
<tr>
<td class="label">UniProt ID</td>
<td>Q14596</td>
</tr>
<tr>
<td class="label">Cell Type</td>
<td>Expression Level</td>
</tr>
<tr>
<td class="label">[Neurons](/entities/neurons)</td>
<td>High</td>
</tr>
<tr>
<td class="label">[Astrocytes](/entities/astrocytes)</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">[Microglia](/entities/microglia)</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Oligodendrocytes</td>
<td>Low</td>
</tr>
<tr>
<td class="label">Endothelial cells</td>
<td>Low</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/ad" style="color:#ef9a9a">AD</a>, <a href="/wiki/ali" style="color:#ef9a9a">ALI</a>, <a href="/wiki/als" style="color:#ef9a9a">ALS</a>, <a href="/wiki/ami" style="color:#ef9a9a">AMI</a>, <a href="/wiki/aging" style="color:#ef9a9a">Aging</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">862 edges</a></td>
</tr>
</table>

Pathway Diagram

Nbr1 Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.

Introduction

Nbr1 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes. [@rogov2014]

The NBR1 gene (Neighbor of BRCA1 Gene 1) encodes a selective autophagy receptor that plays crucial roles in protein quality control and aggresome formation. NBR1 is important for clearing damaged proteins in neurodegenerative diseases. [@mcewan2015]

Gene Overview

Normal Function

NBR1 is a selective autophagy receptor:

• Cargo recognition: Binds ubiquitinated proteins for autophagic degradation
• Aggresome formation: Facilitates aggresome formation under stress
• Organelleophagy: Involved in peroxisome and mitophagy
• Signaling: Modulates [NF-κB](/entities/nf-kb) and other pathways
• Protein quality control: Clears misfolded and aggregated proteins

Molecular Mechanism

Structural Features

NBR1 contains several key domains:

Autophagy Receptors

NBR1 functions as an autophagy receptor by:

• Binding ubiquitinated proteins via UBA domain
• Engaging LC3/GABARAP via LIR motif
• Recruiting autophagosomes to cargo
• Working synergistically with p62/SQSTM1

Signaling Interactions

NBR1 modulates multiple pathways:

• NF-κB signaling: TRAF6-mediated activation
• p62-mediated signaling: Nrf2 pathway activation
• ER stress response: [UPR](/entities/unfolded-protein-response) pathway crosstalk

Brain Expression

NBR1 is expressed in all brain cell types:

Important for neuronal protein homeostasis, with high expression in areas prone to neurodegeneration including [hippocampus](/brain-regions/hippocampus) and substantia nigra.

Disease Associations

Alzheimer's Disease

• NBR1 accumulates in AD brains
• Colocalizes with [tau](/proteins/tau) pathology
• Implicated in [tau](/proteins/tau) clearance
• Therapeutic: Enhancing selective autophagy

Parkinson's Disease

• NBR1 and [α-synuclein](/proteins/alpha-synuclein) colocalize
• Involved in mitophagy of damaged mitochondria
• Protects dopaminergic neurons
• Loss-of-function leads to α-syn accumulation

ALS

• NBR1 inclusions in motor neurons
• Interacts with p62/SQSTM1
• Therapeutic target for ALS
• Mutant SOD1 clearance role

Huntington's Disease

• Colocalizes with mutant [huntingtin](/proteins/huntingtin-protein)
• Impaired autophagy in HD
• Therapeutic potential

Therapeutic Implications

NBR1-targeted therapeutic strategies:

Clinical considerations:

• [Blood-brain barrier](/entities/blood-brain-barrier) penetration
• Cell-type specific delivery
• Combination with other autophagy targets

Animal Models

Key findings from model systems:

• NBR1 knockout mice: Viable but accumulate protein aggregates
• Conditional knockout: Neurodegeneration phenotypes
• Zebrafish: Developmental studies
• C. elegans: Autophagy pathway studies

Research Directions

Current research focus areas:

Key Publications

• Kirkin V, et al. (2009). A role for NBR1 in selective autophagy. The Journal of Cell Biology. PMID: 19349929(https://pubmed.ncbi.nlm.nih.gov/19349929/)
• McEwan DG, et al. (2015). NBR1 in neurodegeneration. Autophagy. PMID: 25853488(https://pubmed.ncbi.nlm.nih.gov/25853488/)
• Wild P, et al. (2011). Phosphorylation of NBR1 modulates autophagy. EMBO Reports. PMID: 21841787(https://pubmed.ncbi.nlm.nih.gov/21841787/)

See Also

• [NBR1 Protein](/proteins/nbr1-protein)
• [Alzheimer's Disease](/diseases/alzheimers-disease)
• [Parkinson's Disease](/diseases/parkinsons-disease)
• [ALS](/diseases/amyotrophic-lateral-sclerosis)
• [Autophagy-Lysosomal Pathway](/mechanisms/autophagy-lysosomal-pathway)

External Links

• [NCBI Gene: NBR1](https://www.ncbi.nlm.nih.gov/gene/10327)
• [UniProt: NBR1](https://www.uniprot.org/uniprot/Q14596)
• [GeneCards: NBR1](https://www.genecards.org/cgi-bin/carddisp.pl?gene=NBR1)

Overview

Nbr1 Gene plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.

Background

The study of Nbr1 Gene 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

Pathway Diagram

The following diagram shows the key molecular relationships involving NBR1 Gene discovered through SciDEX knowledge graph analysis: