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LRRTM2 Protein

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wiki page Created: 2026-04-02T07:19:05 By: crosslink-migration Quality: 50% ✓ SciDEX ID: wiki-proteins-lrrtm2-protein
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protein551 wordssynced 2026-04-02

Overview

LRRTM2 is a Leucine-rich repeat transmembrane neuronal protein involved in excitatory synapse formation.

title: LRRTM2 Protein [@siddiqui2013]
--- [@wit2015]

LRRTM2 (Leucine-Rich Repeat Transmembrane Neuronal 2)

<div class="infobox infobox-protein"> [@neural2017]

| Property | Value | [@friedman2015]
|----------|-------| [@linhoff2015]
| Protein Name | LRRTM2 | [^8]
| Gene | LRRTM2 |
| UniProt ID | Q9H0Y5 |
| Molecular Weight | ~62 kDa |
| Subcellular Localization | Postsynaptic membrane |
| Protein Family | LRRTM family |

</div>

Structure

LRRTM2 is a type I transmembrane protein with 10 leucine-rich repeats (LRR) in its extracellular domain, a transmembrane region, and a cytoplasmic tail. It is the most potent synaptogenic member of the LRRTM family.

Normal Function

LRRTM2 is a key organizer of excitatory synapses:

  • Excitatory Synaptogenesis: Most potent inducer of excitatory synapse formation
  • Neurexin Binding: High-affinity ligand for presynaptic neurexins
  • AMPAR Trafficking: Regulates AMPA receptor surface expression
  • Synaptic Plasticity: Critical for [LTP](/mechanisms/long-term-potentiation)
  • PSD-95 Interaction: Associates with postsynaptic scaffolding proteins

Role in Disease

Autism Spectrum Disorder

  • Mutations in ASD patients
  • Disrupted synaptic adhesion
  • Social behavior deficits

Intellectual Disability

  • Rare variants cause ID
  • Synaptic development impaired

Epilepsy

  • Linked to seizure disorders
  • Excitatory/inhibitory imbalance

Therapeutic Targeting


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Related Entities
LRRTM2PROTEIN
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entity_typeprotein
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source_tablewiki_pages
wiki_page_idwp-afaa8d06ac9a
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📊 Evidence Profile Foundational
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Certainty
50%
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Outgoing
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