Erlin1 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.
ERLIN1 (ER Lipid Raft Associated 1) is a cholesterol-binding protein localized to the endoplasmic reticulum. It plays a role in lipid metabolism and is implicated in hereditary spastic paraplegia (HSP).
ERLIN1 (ER Lipid Raft Associated 1) is a specialized protein located on the endoplasmic reticulum (ER) membrane that functions as a key regulator of lipid homeostasis. The gene is located on chromosome 10q24.31 and encodes a 346-amino acid protein that localizes specifically to lipid raft microdomains within the ER membrane[1].
The protein belongs to the flarelin/ERLIN family and is characterized by its ability to bind cholesterol and other sterols, making it uniquely positioned to sense and respond to changes in cellular lipid composition. ERLIN1 operates as part of a heteromeric complex that includes ERLIN2, and together these proteins form cholesterol-dependent regulatory complexes that monitor ER membrane integrity[2].
In neurons, ERLIN1 plays a particularly important role in maintaining the specialized lipid composition of ER membranes in corticospinal tract neurons. Mutations in ERLIN1 cause autosomal recessive hereditary spastic paraplegia (HSP), characterized by progressive lower limb spasticity and weakness due to degeneration of the corticospinal tract. Understanding ERLIN1 function provides insights into how lipid homeostasis defects lead to selective neuronal vulnerability[3].
<div class="infobox infobox-gene">
<div class="infobox-header">ERLIN1</div>
<table>
<tr><th>Gene Symbol</th><td>ERLIN1</td></tr>
<tr><th>Full Name</th><td>ER Lipid Raft Associated 1</td></tr>
<tr><th>Chromosomal Location</th><td>10q24.31</td></tr>
<tr><th>NCBI Gene ID</th><td><a href="https://www.ncbi.nlm.nih.gov/gene/10613" target="_blank">10613</a></td></tr>
<tr><th>OMIM</th><td><a href="https://www.omim.org/entry/611421" target="_blank">611421</a></td></tr>
<tr><th>Ensembl ID</th><td>ENSG00000151690</td></tr>
<tr><th>UniProt ID</th><td><a href="https://www.uniprot.org/uniprot/Q8IVG8" target="_blank">Q8IVG8</a></td></tr>
<tr><th>Associated Diseases</th><td>Hereditary Spastic Paraplegia (SPT)</td></tr>
</table>
</div>
ERLIN1 is a component of lipid raft microdomains in the endoplasmic reticulum:
The protein participates in cellular lipid regulation:
ERLIN1 has been shown to regulate ion channel activity:
ERLIN1 expression is highest in:
Allen Brain Atlas: Expression data available at human.brain-map.org
The study of Erlin1 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.