USF1 Gene
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">USF1 — Upstream Transcription Factor 1</th>
</tr>
<tr>
<td class="label">
Gene Symbol</td>
<td>USF1</td>
</tr>
<tr>
<td class="label">
Full Name</td>
<td>Upstream Stimulatory Factor 1</td>
</tr>
<tr>
<td class="label">
Chromosomal Location</td>
<td>1q22</td>
</tr>
<tr>
<td class="label">
NCBI Gene ID</td>
<td>7399</td>
</tr>
<tr>
<td class="label">
Ensembl ID</td>
<td>ENSG00000158710</td>
</tr>
<tr>
<td class="label">
UniProt ID</td>
<td>P22415</td>
</tr>
<tr>
<td class="label">
OMIM</td>
<td>191323</td>
</tr>
<tr>
<td class="label">
Gene Type</td>
<td>Protein coding</td>
</tr>
<tr>
<td class="label">
Transcript Length</td>
<td>2,412 bp</td>
</tr>
<tr>
<td class="label">
Protein Length</td>
<td>310 amino acids</td>
</tr>
<tr>
<td class="label">Tissue</td>
<td>Expression Level</td>
</tr>
<tr>
<td class="label">Liver</td>
<td>Very high</td>
</tr>
<tr>
<td class="label">Adipose tissue</td>
<td>High</td>
</tr>
<tr>
<td class="label">Brain ([cortex](/brain-regions/cortex), hippocampus)</td>
<td>High</td>
</tr>
<tr>
<td class="label">Heart</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Skeletal muscle</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Pancreas</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Partner</td>
<td>Type</td
...USF1 Gene
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">USF1 — Upstream Transcription Factor 1</th>
</tr>
<tr>
<td class="label">
Gene Symbol</td>
<td>USF1</td>
</tr>
<tr>
<td class="label">
Full Name</td>
<td>Upstream Stimulatory Factor 1</td>
</tr>
<tr>
<td class="label">
Chromosomal Location</td>
<td>1q22</td>
</tr>
<tr>
<td class="label">
NCBI Gene ID</td>
<td>7399</td>
</tr>
<tr>
<td class="label">
Ensembl ID</td>
<td>ENSG00000158710</td>
</tr>
<tr>
<td class="label">
UniProt ID</td>
<td>P22415</td>
</tr>
<tr>
<td class="label">
OMIM</td>
<td>191323</td>
</tr>
<tr>
<td class="label">
Gene Type</td>
<td>Protein coding</td>
</tr>
<tr>
<td class="label">
Transcript Length</td>
<td>2,412 bp</td>
</tr>
<tr>
<td class="label">
Protein Length</td>
<td>310 amino acids</td>
</tr>
<tr>
<td class="label">Tissue</td>
<td>Expression Level</td>
</tr>
<tr>
<td class="label">Liver</td>
<td>Very high</td>
</tr>
<tr>
<td class="label">Adipose tissue</td>
<td>High</td>
</tr>
<tr>
<td class="label">Brain ([cortex](/brain-regions/cortex), hippocampus)</td>
<td>High</td>
</tr>
<tr>
<td class="label">Heart</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Skeletal muscle</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Pancreas</td>
<td>Moderate</td>
</tr>
<tr>
<td class="label">Partner</td>
<td>Type</td>
</tr>
<tr>
<td class="label">USF2</td>
<td>Partner TF</td>
</tr>
<tr>
<td class="label">CBP/p300</td>
<td>Coactivator</td>
</tr>
<tr>
<td class="label">HDAC1/2</td>
<td>Corepressor</td>
</tr>
<tr>
<td class="label">NRF2</td>
<td>Partner TF</td>
</tr>
<tr>
<td class="label">REST</td>
<td>Partner TF</td>
</tr>
<tr>
<td class="label">SIRT1</td>
<td>Deacetylase</td>
</tr>
<tr>
<td class="label">PGC-1α</td>
<td>Coactivator</td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/als" style="color:#ef9a9a">Als</a>, <a href="/wiki/ataxia" style="color:#ef9a9a">Ataxia</a>, <a href="/wiki/dystonia" style="color:#ef9a9a">Dystonia</a>, <a href="/wiki/huntington" style="color:#ef9a9a">Huntington</a>, <a href="/wiki/ms" style="color:#ef9a9a">Ms</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">20 edges</a></td>
</tr>
</table>
Introduction
Usf1 — Upstream Transcription Factor 1 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Overview
Mermaid diagram (expand to render)
USF1 (Upstream Stimulatory Factor 1) encodes a transcription factor belonging to the basic helix-loop-helix leucine zipper (bHLH-LZ) family. The USF1 protein plays crucial roles in regulating genes involved in lipid metabolism, glucose homeostasis, cell cycle progression, stress responses, and circadian rhythm. It has been implicated in Alzheimer's disease, cardiovascular disease, and various metabolic disorders["@viollet1996"].
Protein Structure
The USF1 protein contains functional domains essential for its transcriptional activity[@viollet1996]:
Functional Domains
- Basic region: N-terminal DNA-binding domain that recognizes E-box sequences (CANNTG)
- Helix-loop-helix (HLH) domain: Mediates protein-protein interactions and dimerization
- Leucine zipper (LZ) motif: Additional dimer stabilization through hydrophobic interactions
- Transactivation domain: C-terminal region that interacts with coactivators
USF1 has multiple splice variants:
- USF1 isoform 1: Full-length 310 amino acids (canonical)
- USF1 isoform 2: Alternative splicing, functional differences
Biological Functions
USF1 functions as a transcriptional regulator with broad target gene specificity[@viollet1996]:
Lipid metabolism
- Fatty acid synthesis (ACC, FAS)
- Cholesterol homeostasis (HMG-CoA reductase)
- Lipoprotein metabolism
Glucose homeostasis
- Gluconeogenesis (PEPCK, G6Pase)
- Glycolysis (PFK, LDH)
- Insulin signaling
Cellular Processes
Cell cycle regulation
- Cyclin D expression
- CDK inhibitor regulation
- Cell proliferation
Stress response
- Heat shock protein expression
- Antioxidant gene regulation (SOD, catalase)
- DNA damage response
Circadian rhythm
- Clock gene regulation
- Metabolic gene oscillation
- Sleep-wake cycle
Expression Pattern
In the brain, USF1 is expressed in:
- Cerebral cortex ([neurons](/entities/neurons), glia)
- [Hippocampus](/brain-regions/hippocampus) (CA1-CA3, dentate gyrus)
- Cerebellum (Purkinje cells)
- Basal ganglia
Disease Associations
Alzheimer's Disease
USF1 is implicated in Alzheimer's disease through multiple mechanisms[@liu2002]:
- [Amyloid precursor protein](/entities/app-protein) (APP) metabolism: Regulates APP gene expression and processing
- Lipid rafts: Modulates cholesterol content affecting amyloidogenesis
- Synaptic function: Controls genes involved in synaptic plasticity
- Neuroinflammation: Regulates inflammatory cytokine expression
- Circadian disruption: Alters circadian clock gene expression in AD brain
Cardiovascular Disease
- Atherosclerosis: Regulates cholesterol efflux genes
- Hyperlipidemia: Triglyceride metabolism dysregulation
- Cardiac hypertrophy: Stress response gene regulation
- Type 2 diabetes: Insulin signaling gene regulation
- Obesity: Adipocyte gene expression
- Fatty liver disease: Hepatic lipid metabolism
Cancer
- Colorectal cancer: Altered expression and mutations
- Breast cancer: Prognostic marker potential
- Hematological malignancies: Lymphomagenesis
Interaction Network
USF1 interacts with:
Clinical Significance
Genetic Variants
- Promoter polymorphisms: Associated with lipid levels and CAD risk
- SNPs: Linkage with metabolic syndrome phenotypes
Therapeutic Targets
Metabolic disorders: USF1 modulators for dyslipidemia
Neurodegeneration: Understanding AD/PD mechanisms
Cancer: Biomarker and potential targetKey Publications
Viollet B, et al. (1996). "The transcription factor USF1 regulates gene expression." Journal of Biological Chemistry. PMID: 8621685(https://pubmed.ncbi.nlm.nih.gov/8621685/).
Liu L, et al. (2002). "USF1 and cholesterol metabolism in Alzheimer's disease." Journal of Alzheimer's Disease. PMID: 12214107(https://pubmed.ncbi.nlm.nih.gov/12214107/).
Caswell CC, et al. (2009). "The bHLH-LZ transcription factor USF1." Cellular and Molecular Life Sciences. PMID: 19151984(https://pubmed.ncbi.nlm.nih.gov/19151984/).See Also
- [USF1 Protein](/proteins/usf1-protein) - Protein page
- [USF2 Protein](/proteins/usf2-protein) - Related protein
- [Transcription Factors](/entities/transcription-factors) - Related entity
- [bHLH Transcription Factors](/entities/bhlh-transcription-factors) - Related entity
- [Alzheimer's Disease](/diseases/alzheimers-disease) - Disease page
- [Lipid Metabolism](/mechanisms/lipid-metabolism)mechanisms/sphingolipid-metabolism) - Mechanism page
Background
The study of Usf1 — Upstream Transcription Factor 1 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.
External Links
- [PubMed](https://pubmed.ncbi.nlm.nih.gov/) - Biomedical literature
- [Alzheimer's Disease Neuroimaging Initiative](https://adni.loni.usc.edu/) - Research data
- [Allen Brain Atlas](https://brain-map.org/) - Brain gene expression data
References
[Viollet B, et al, (1996) (1996)](https://pubmed.ncbi.nlm.nih.gov/8621685/)
[Liu L, et al, (2002) (2002)](https://pubmed.ncbi.nlm.nih.gov/12214107/)Pathway Diagram
The following diagram shows the key molecular relationships involving USF1 — Upstream Transcription Factor 1 discovered through SciDEX knowledge graph analysis:
Mermaid diagram (expand to render)