How do ALS-linked UBQLN2 mutations affect its ubiquitylation-dependent stability and localization?

INVESTIGATING

The abstract establishes that UBQLN2 ubiquitylation regulates its stability and puncta formation, but doesn't address how disease-causing mutations impact these processes. This gap is critical for understanding ALS pathogenesis and developing targeted therapies. Gap type: open_question Source paper: The Importance of UBQLN2 Ubiquitylation for Its Turnover and Localization. (2026, Biochemistry, PMID:41428212)

Priority: 0.87 Domain: neurodegeneration Hypotheses: 0

📊 Landscape Analysis

Landscape Summary: How do ALS-linked UBQLN2 mutations affect its ubiquitylation-dependent stability and localization? is a 0.87 priority gap in neurodegeneration. It has 0 linked hypotheses with average composite score 0.335. Status: investigating.

Key Unanswered Questions

What is the optimal TREM2 modulation strategy across disease stages?
How does DAM activation state affect therapeutic outcomes?
What biomarkers predict response to TREM2-targeted interventions?

Key Researchers

Colonna, Sevlever, et al. (TREM2 biology)

Clinical Trials

How do ALS-linked UBQLN2 mutations affect its ubiquitylation-dependent stability and localization? — INVOKE-2 (completed)

📈 Living Dashboards

0

Hypotheses

0.344

Top Score

0.335

Avg Score

3

Debates

0.76

Avg Quality

30%

Resolution

0

Mechanistic Families

Gap Resolution Progress30%

Hypothesis Score Distribution

🏆 Competing Hypotheses (Ranked by Score)

ubiquitylation-dependent turnover is the actionable driver in: How do

Target: ubiquitylation-dependent turnover Pathway: ubiquitylation-dependent turno

0.344

score

K48/K63 ubiquitin chain balance separates causal from compensatory sta

Target: K48/K63 ubiquitin chain balance Pathway: stress-granule partitioning

0.335

score

proteasome shuttle failure defines the therapeutic window for: How do

Target: proteasome shuttle failure Pathway: proteasome shuttle failure

0.327

score

🌊 Knowledge Graph Connections

activates (11)

UBQLN2→NeurodegenerationUBQLN2→PROTEIN_DEGRADATIONUBQLN2→NEURODEGENERATIONUBQLN2→MOTOR NEURONSUBQLN2→Amyotrophic Lateral Sclerosis

▸ Show 6 more

UBQLN2→DementiaUBQLN2→AgingUBQLN2→NeuroinflammationUBIQUITIN→UBQLN2UBQLN2→OPTNUBQLN2→Inflammation

associated with (7)

FTD→UBQLN2UBQLN2→Amyotrophic Lateral SclerosisUBQLN2→ALSUBQLN2→PrionUBQLN2→Ms

▸ Show 2 more

UBQLN2→AlsC9ORF72→UBQLN2

causes (2)

UBQLN2→NEURODEGENERATIONUBQLN2→UBIQUITIN

degrades (1)

exacerbates (2)

UBQLN2→C9orf72TDP-43→UBQLN2

implicated in (1)

inhibits (2)

UBQLN2→AlsUBQLN2→OXIDATIVE_STRESS

interacts with (10)

UBQLN2→UbiquitinUBQLN2→26S ProteasomeUBQLN2→ParkinHSP70→UBQLN2UBQLN2→PHB2

▸ Show 5 more

UBQLN2→UNC5BUBQLN2→HSP70OPTN→UBQLN2UBQLN2→AMYOTROPHIC LATERAL SCLEROSISAPP→UBQLN2

involved in (2)

UBQLN2→Protein DegradationUBQLN2→Phase Separation

phosphorylates (1)

UBQLN2→TDP-43

produces (1)

UBQLN2→MOTOR NEURONS

protects against (2)

Ubl Domain→UBQLN2UBQLN2→Oxidative Stress

recruits (1)

UBQLN2→STRESS GRANULES

regulates (3)

Ubiquitylation→UBQLN2UBQLN2→NEURODEGENERATIONUBQLN2→MOTOR NEURONS

therapeutic target (3)

UBQLN2→AgingUBQLN2→NeurodegenerationUBQLN2→Als

upregulates (1)

Ubiquitin→UBQLN2

🕑 Activity Feed

🎭 Formal debate: ubiquitylation-dependent turnover is the acti q=0.75 2026-04-26T15:49

🎭 Formal debate: K48/K63 ubiquitin chain balance separates cau q=0.75 2026-04-26T15:49

📈 ubiquitylation-dependent turnover is the actionable driver i score=0.344 2026-04-26T14:18

📈 K48/K63 ubiquitin chain balance separates causal from compen score=0.335 2026-04-26T14:18

📈 proteasome shuttle failure defines the therapeutic window fo score=0.327 2026-04-26T14:18

🎭 How do ALS-linked UBQLN2 mutations affect its ubiquitylation q=0.78 2026-04-26T14:18

✏ update on knowledge_gap by None 2026-04-26T14:18

✏ update on knowledge_gap by None 2026-04-26T14:18

✏ update on knowledge_gap by None 2026-04-26T14:18

✏ update on knowledge_gap by None 2026-04-26T14:18

✏ update on knowledge_gap by None 2026-04-26T14:18

💬 Discussion

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