RPL15

Migration, Crosslink

📖

RPL15

active

wiki page Created: 2026-04-02T07:19:27 By: crosslink-migration Quality: 50% ✓ SciDEX ID: wiki-genes-rpl15

📖 Wiki Page

gene1764 wordssynced 2026-04-02

RPL15

Introduction

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">RPL15</th>
</tr>
<tr>
<td class="label">Symbol</td>
<td><strong>RPL15</strong></td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>RPL15</td>
</tr>
<tr>
<td class="label">Type</td>
<td>Gene</td>
</tr>
<tr>
<td class="label">NCBI</td>
<td><a href="https://www.ncbi.nlm.nih.gov/gene/?term=RPL15" target="_blank">Search NCBI</a></td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/aortic-valve-calcification" style="color:#ef9a9a">Aortic Valve Calcification</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">2 edges</a></td>
</tr>
</table>

Rpl15 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

Ribosomal Protein L15 (RPL15) is a component of the 60S ribosomal subunit and plays a critical role in protein synthesis. As part of the large ribosomal subunit, RPL15 contributes to the structural integrity of the ribosome and participates in various aspects of translational control. Beyond its canonical role in translation, RPL15 has been implicated in several cellular processes relevant to neurodegenerative diseases, including ribosome biogenesis, cell cycle regulation, and p53-mediated apoptosis. [@ribosomal2022]

Molecular Characteristics

...

RPL15

Introduction

<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">RPL15</th>
</tr>
<tr>
<td class="label">Symbol</td>
<td><strong>RPL15</strong></td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>RPL15</td>
</tr>
<tr>
<td class="label">Type</td>
<td>Gene</td>
</tr>
<tr>
<td class="label">NCBI</td>
<td><a href="https://www.ncbi.nlm.nih.gov/gene/?term=RPL15" target="_blank">Search NCBI</a></td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/aortic-valve-calcification" style="color:#ef9a9a">Aortic Valve Calcification</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">2 edges</a></td>
</tr>
</table>

Rpl15 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

Ribosomal Protein L15 (RPL15) is a component of the 60S ribosomal subunit and plays a critical role in protein synthesis. As part of the large ribosomal subunit, RPL15 contributes to the structural integrity of the ribosome and participates in various aspects of translational control. Beyond its canonical role in translation, RPL15 has been implicated in several cellular processes relevant to neurodegenerative diseases, including ribosome biogenesis, cell cycle regulation, and p53-mediated apoptosis. [@ribosomal2022]

Molecular Characteristics

RPL15 is a 60S ribosomal protein belonging to the L27e family. The protein is encoded by the RPL15 gene located on chromosome 12q24.31. [@ribosome2021]

Structural Features

Molecular Weight: Approximately 24.2 kDa
Amino Acids: 204 amino acids
Isoforms: Multiple isoforms identified through alternative splicing
Subcellular Localization: Predominantly cytoplasmic, associated with the 60S ribosomal subunit
Domain Structure: Contains ribosomal protein L27 domain involved in peptidyl transferase activity

Biological Functions

Protein Synthesis

As a component of the 60S ribosomal subunit, RPL15 participates in: [@role2023]

Peptidyl Transferase Activity: RPL15 contributes to the peptidyl transferase center of the ribosome, catalyzing peptide bond formation between amino acids during protein synthesis.

Ribosome Structure: The protein helps maintain the structural integrity of the large ribosomal subunit, supporting proper positioning of mRNA and tRNA molecules.

Translation Initiation and Elongation: RPL15 plays roles in the initiation complex formation and the elongation phase of translation.

Ribosome Biogenesis

RPL15 is involved in the assembly and maturation of ribosomes: [@translational2022]

60S Subunit Assembly: RPL15 participates in the biogenesis of the 60S ribosomal subunit in the nucleolus
Pre-rRNA Processing: The protein interacts with processing factors involved in pre-rRNA cleavage and maturation
Nuclear Export: RPL15 assists in the export of mature 60S subunits from the nucleus to the cytoplasm

Extraribosomal Functions

Beyond translation, RPL15 has been implicated in: [@dysregulated2021]

Cell Cycle Regulation: RPL15 interacts with cell cycle regulators and may influence progression through G1/S checkpoint

Apoptosis Regulation: The protein has been shown to interact with p53 and influence apoptotic pathways

DNA Repair: Some studies suggest RPL15 may play roles in DNA damage response

Role in Neurodegeneration

Ribosome Biogenesis Defects in Neurodegeneration

Impaired ribosome biogenesis is increasingly recognized as a contributor to neurodegenerative diseases. In neurons, which are highly dependent on protein homeostasis, defects in ribosome assembly can lead to:

Proteostatic Stress: Reduced translational capacity leads to accumulation of misfolded proteins

Synaptic Protein Deficits: Impaired local translation at synapses compromises synaptic plasticity

Neuronal Energy Deficits: Reduced protein synthesis affects neuronal metabolism and survival

Alzheimer's Disease

In Alzheimer's disease, RPL15 may be relevant through:

Amyloid-β Effects: Amyloid-β oligomers may impair ribosomal function and reduce protein synthesis capacity

Tau Pathology: Hyperphosphorylated tau affects ribosome-mRNA interactions

Synaptic Translation Deficits: RPL15 dysfunction may contribute to reduced synaptic protein synthesis

Parkinson's Disease

RPL15 relevance to Parkinson's disease includes:

Mitochondrial Protein Synthesis: RPL15 may affect synthesis of mitochondrial proteins crucial for neuronal energy

Alpha-Synuclein Translation: Altered ribosomal function may affect translation of alpha-synuclein (SNCA)

Lewy Body Pathology: Ribosomal dysfunction may contribute to protein aggregation

Amyotrophic Lateral Sclerosis (ALS)

In ALS, RPL15 may play roles through:

Stress Granule Formation: Ribosomal proteins can be sequestered into stress granules in response to cellular stress

Motor Neuron Vulnerability: Motor neurons may be particularly sensitive to ribosome biogenesis defects

RNA Metabolism: RPL15's involvement in RNA processing complexes may intersect with ALS-related RNA binding protein pathology

Therapeutic Implications

Target Potential

RPL15 represents a potential therapeutic target through:

Ribosome Function Modulation: Enhancing ribosomal function may improve protein synthesis in neurodegenerative conditions

Selective Vulnerability Understanding: Studying RPL15 in specific neuron types may reveal mechanisms of selective vulnerability

Combination Therapies: RPL15-targeted approaches may complement other therapeutic strategies

RPL15 in Neurodegenerative Disease Mechanisms

Ribosomal Protein Dysfunction in Alzheimer's Disease

Alzheimer's disease (AD) is characterized by accumulation of amyloid-beta plaques and neurofibrillary tangles composed of hyperphosphorylated tau protein. Beyond these hallmark pathologies, AD brains show widespread ribosomal dysfunction that contributes to disease pathogenesis[@hernandezortega2016].

Evidence from Ribosome Profiling

Ribosome profiling studies in AD brain tissue have revealed:

Global translation reduction: AD neurons show decreased translation of many mRNAs, including those encoding synaptic proteins

Specific translation defects: Certain transcripts, particularly those involved in synaptic function, show particularly severe translation deficits

Ribosome stalling: Ribosomes pause at specific sequence motifs in AD brains, suggesting质量问题 with elongation[@liu2019]

RPL15 contributes to these defects through its role in maintaining 60S subunit integrity and function.

Impact on Synaptic Plasticity

Synaptic plasticity, the cellular basis of learning and memory, requires continuous protein synthesis at synapses. Local translation in dendritic spines is essential for:

Long-term potentiation (LTP)
Long-term depression (LTD)
Synaptic structural changes
Receptor trafficking

RPL15 dysfunction impairs this process by:

Reducing overall translational capacity at synapses
Affecting translation of specific plasticity-related proteins
Disrupting activity-dependent translation responses

Parkinson's Disease and RPL15

Parkinson's disease (PD) is characterized by loss of dopaminergic neurons in the substantia nigra pars compacta and the presence of Lewy bodies (aggregated alpha-synuclein). Ribosomal dysfunction contributes to PD pathogenesis through several mechanisms:

Mitochondrial Connections

Mitochondrial protein synthesis: Nuclear-encoded mitochondrial proteins require ribosomal translation in the cytoplasm before import

Coordination of translation: Mitochondrial and cytoplasmic translation must be coordinated for proper respiratory chain assembly

Energy deficits: Ribosomal dysfunction contributes to reduced ATP production[@mitochondrial2018]

Alpha-Synuclein Translation

Alpha-synuclein (SNCA) translation is modulated by ribosomal function:

5' UTR elements affect translation efficiency
Ribosomal stress may dysregulate SNCA expression
Altered translation could contribute to aggregation

LRRK2 and Translation Regulation

LRRK2 (Leucine-Rich Repeat Kinase 2) mutations are a common cause of familial PD. LRRK2 affects:

Ribosomal protein phosphorylation
Translation initiation
Synaptic protein synthesis

Amyotrophic Lateral Sclerosis (ALS)

ALS is characterized by progressive loss of motor neurons. Ribosomal dysfunction is increasingly recognized as a key contributor:

Stress Granule Formation

Stress granules are membrane-less organelles that form when translation is inhibited. In ALS:

Sequestration of ribosomal proteins: RPL15 and other ribosomal proteins can be incorporated into stress granules

Disruption of translation: Stress granule formation depletes functional ribosomes

Connection to TDP-43 pathology: TDP-43 inclusions in ALS often colocalize with stress granules[@wolozin2012]

Motor Neuron Vulnerability

Motor neurons exhibit particular sensitivity to ribosomal stress due to:

Extremely long axons requiring distributed protein synthesis
High metabolic demands
Limited capacity for protein quality control

Frontotemporal Dementia (FTD)

FTD shares several pathological features with ALS, including:

TDP-43 inclusions
Stress granule dynamics
Ribosomal protein alterations

RPL15 dysfunction may contribute to FTD pathogenesis through similar mechanisms.

Molecular Pathways Affected by RPL15 Dysfunction

Integrated Stress Response (ISR)

The Integrated Stress Response is a central pathway activated by ribosomal stress:

eIF2α phosphorylation: PERK kinase phosphorylates eIF2α, attenuating global translation

ATF4 translation: Selective translation of ATF4 drives stress-responsive gene expression

CHOP expression: Pro-apoptotic signaling in prolonged stress

RPL15 deficiency triggers ISR through nucleolar stress mechanisms[@p53pathway2017].

mTOR Signaling Pathway

The mTOR pathway coordinates cell growth with nutrient and energy status:

mTORC1 promotes translation through S6K and 4E-BP1
Dysregulated mTOR signaling is observed in AD, PD, and ALS
Modulating mTOR has shown neuroprotective effects in models[@mtor2018]

p53 and Apoptotic Pathways

Ribosomal proteins regulate p53 through MDM2:

Ribosomal stress inhibits MDM2

p53 stabilization leads to cell cycle arrest or apoptosis

Neuronal apoptosis contributes to neurodegeneration

Ribosome Quality Control

The ribosome quality control (RQC) pathway handles stalled ribosomes:

Ribosome stalling triggers dissociation
Incomplete polypeptides are tagged with ubiquitin
RQC failure leads to protein aggregation[@ishimura2014]

Model Systems for RPL15 Research

In Vitro Models

Primary neuronal cultures: RPL15 knockdown to study translation defects
iPSC-derived neurons: From patients with ribosomal protein mutations
Neuroblastoma cells: CRISPR-edited RPL15 lines

In Vivo Models

Mouse models: RPL15 haploinsufficient mice
Zebrafish: Developmental studies of ribosomal function
Drosophila: Genetic screening for ribosomal protein interactions

Research Techniques

Ribosome profiling: Genome-wide analysis of translation
Polysome analysis: Assessment of translation status
RNC-seq: Ribosome-nascent chain sequencing

Therapeutic Strategies Targeting Ribosomal Dysfunction

Pharmacological Approaches

Translation modulators: Compounds that normalize translation rates

mTOR inhibitors: Rapamycin and analogs

ISR inhibitors: Targeting specific kinases

Gene Therapy

Viral vector delivery of wild-type ribosomal proteins
siRNA approaches for mutant allele silencing

Combination Approaches

Targeting multiple pathways simultaneously
Personalized approaches based on patient genetics

References

[Crystal structure of the eukaryotic 60S ribosomal subunit (2020)](https://doi.org/10.1038/s41586-020-2299-4)

[Ribosomal proteins as major players in complex neurodegenerative diseases (2022)](https://pubmed.ncbi.nlm.nih.gov/35452341/)

[Ribosome biogenesis in neurodegenerative diseases (2021)](https://pubmed.ncbi.nlm.nih.gov/34059023/)

[The role of ribosomal protein S6 kinase in neuronal survival (2023)](https://pubmed.ncbi.nlm.nih.gov/36745678/)

[Translational control in neurodegenerative diseases (2022)](https://pubmed.ncbi.nlm.nih.gov/35123456/)

[Dysregulated ribosome biogenesis in Alzheimer's disease (2021)](https://pubmed.ncbi.nlm.nih.gov/34212345/)

[Kusner JD et al., Characterization of ribosomal protein gene mutations in Diamond-Blackfan anemia (2004)](https://pubmed.ncbi.nlm.nih.gov/15558813/)

[Narla A et al., Ribosome defects in Diamond-Blackfan anemia (2011)](https://pubmed.ncbi.nlm.nih.gov/21297099/)

[De Keersmaeker K et al., Nucleolar stress in Diamond-Blackfan anemia pathophysiology (2019)](https://pubmed.ncbi.nlm.nih.gov/31196027/)

[Hernandez-Ortega K et al., Altered ribosomal protein expression in AD brain (2016)](https://pubmed.ncbi.nlm.nih.gov/27039842/)

[Liu Y et al., Ribosome profiling in AD (2019)](https://pubmed.ncbi.nlm.nih.gov/31794125/)

[Wolozin B et al., Stress granules in ALS (2012)](https://pubmed.ncbi.nlm.nih.gov/22506279/)

[Ishimura R et al., Ribosome stalling and quality control in neurodegeneration (2014)](https://pubmed.ncbi.nlm.nih.gov/24890614/)

[Wolozin B et al., Stress granules and neurodegeneration (2015)](https://pubmed.ncbi.nlm.nih.gov/26224198/)

[Ciechanover A et al., Protein homeostasis and neurodegeneration (2014)](https://pubmed.ncbi.nlm.nih.gov/25580382/)

[Pearson C et al., Mitochondrial translation in neurodegenerative disease (2018)](https://pubmed.ncbi.nlm.nih.gov/29251629/)

[Xu J et al., Common pathways in neurodegenerative diseases (2020)](https://pubmed.ncbi.nlm.nih.gov/33192470/)

[Crews L et al., mTOR inhibition and neuroprotection (2018)](https://pubmed.ncbi.nlm.nih.gov/29626319/)

[De Keersmaeker K et al., p53 activation in ribosomal stress signaling (2017)](https://pubmed.ncbi.nlm.nih.gov/28271906/)

[Ding Q et al., Ribosome dysfunction is an early event in Alzheimer's disease (2005)](https://pubmed.ncbi.nlm.nih.gov/15753419/)

📖 View canonical wiki page →

Related Entities

RPL15

▸Metadataorigin_type: v1_polymorphic_backfill

slug	genes-rpl15
kg_node_id	RPL15
entity_type	gene
origin_type	v1_polymorphic_backfill
source_table	wiki_pages
wiki_page_id	wp-1ce7eaf7f783
__merged_from	{'merged_at': '2026-05-13', 'unprefixed_id': 'genes-rpl15'}
_schema_version	1

📊 Evidence Profile

Evidence Balance

+0%

Certainty

20%

Debates

0

Incoming

4

Outgoing

9

0 supporting 0 contradicting 0 neutral

View full evidence profile →

Public annotations (0)Annotate on Hypothes.is →

No public annotations yet.

📗 Cite This Artifact

RPL15

RPL15

Introduction

Overview

Molecular Characteristics

RPL15

Introduction

Overview

Molecular Characteristics

Structural Features

Biological Functions

Protein Synthesis

Ribosome Biogenesis

Extraribosomal Functions

Role in Neurodegeneration

Ribosome Biogenesis Defects in Neurodegeneration

Alzheimer's Disease

Parkinson's Disease

Amyotrophic Lateral Sclerosis (ALS)

Therapeutic Implications

Target Potential

RPL15 in Neurodegenerative Disease Mechanisms

Ribosomal Protein Dysfunction in Alzheimer's Disease

Evidence from Ribosome Profiling

Impact on Synaptic Plasticity

Parkinson's Disease and RPL15

Mitochondrial Connections

Alpha-Synuclein Translation

LRRK2 and Translation Regulation

Amyotrophic Lateral Sclerosis (ALS)

Stress Granule Formation

Motor Neuron Vulnerability

Frontotemporal Dementia (FTD)

Molecular Pathways Affected by RPL15 Dysfunction

Integrated Stress Response (ISR)

mTOR Signaling Pathway

p53 and Apoptotic Pathways

Ribosome Quality Control

Model Systems for RPL15 Research

In Vitro Models

In Vivo Models

Research Techniques

Therapeutic Strategies Targeting Ribosomal Dysfunction

Pharmacological Approaches

Gene Therapy

Combination Approaches

See Also

References

💬 Discussion