alpha-synuclein
E804584
Alpha-synuclein is a neuronal protein whose abnormal aggregation is a hallmark of Parkinson’s disease and related synucleinopathies.
All labels observed (1)
| Label | Occurrences |
|---|---|
| alpha-synuclein canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9524645 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: alpha-synuclein Context triple: [Lewy bodies, composedOf, alpha-synuclein]
-
A.
Lewy bodies
Lewy bodies are abnormal aggregates of the protein alpha-synuclein that accumulate inside neurons and are characteristic of Parkinson’s disease and related neurodegenerative disorders.
-
B.
SOD1
SOD1 is a gene encoding the antioxidant enzyme superoxide dismutase 1, whose mutations are a major known cause of familial amyotrophic lateral sclerosis (ALS).
-
C.
TDP-43 proteinopathy
TDP-43 proteinopathy is a neurodegenerative condition characterized by abnormal aggregation and mislocalization of the TDP-43 protein, commonly implicated in disorders such as amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD).
-
D.
Lewy body dementia
Lewy body dementia is a progressive neurodegenerative disorder characterized by cognitive decline, visual hallucinations, fluctuating alertness, and Parkinsonian movement symptoms, caused by abnormal protein deposits called Lewy bodies in the brain.
-
E.
survival motor neuron protein
Survival motor neuron protein is an essential cellular protein required for the maintenance and function of motor neurons, whose deficiency leads to spinal muscular atrophy.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: alpha-synuclein Target entity description: Alpha-synuclein is a neuronal protein whose abnormal aggregation is a hallmark of Parkinson’s disease and related synucleinopathies.
-
A.
Lewy bodies
Lewy bodies are abnormal aggregates of the protein alpha-synuclein that accumulate inside neurons and are characteristic of Parkinson’s disease and related neurodegenerative disorders.
-
B.
SOD1
SOD1 is a gene encoding the antioxidant enzyme superoxide dismutase 1, whose mutations are a major known cause of familial amyotrophic lateral sclerosis (ALS).
-
C.
TDP-43 proteinopathy
TDP-43 proteinopathy is a neurodegenerative condition characterized by abnormal aggregation and mislocalization of the TDP-43 protein, commonly implicated in disorders such as amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD).
-
D.
Lewy body dementia
Lewy body dementia is a progressive neurodegenerative disorder characterized by cognitive decline, visual hallucinations, fluctuating alertness, and Parkinsonian movement symptoms, caused by abnormal protein deposits called Lewy bodies in the brain.
-
E.
survival motor neuron protein
Survival motor neuron protein is an essential cellular protein required for the maintenance and function of motor neurons, whose deficiency leads to spinal muscular atrophy.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
neuronal protein
ⓘ
protein ⓘ |
| aggregationState |
forms amyloid fibrils
ⓘ
forms oligomers ⓘ |
| alsoKnownAs |
NACP
NERFINISHED
ⓘ
PARK1 protein NERFINISHED ⓘ non-Aβ component of Alzheimer disease amyloid NERFINISHED ⓘ α-synuclein ⓘ |
| aminoAcidLength | 140 amino acids ⓘ |
| associatedWithDisease |
Parkinson's disease
NERFINISHED
ⓘ
dementia with Lewy bodies ⓘ multiple system atrophy NERFINISHED ⓘ synucleinopathies ⓘ |
| bindsTo |
phospholipid membranes
ⓘ
synaptic vesicles ⓘ |
| cellularLocation |
cytosol
ⓘ
presynaptic terminal ⓘ synaptic vesicle membrane ⓘ |
| encodedBy | SNCA gene NERFINISHED ⓘ |
| expressedIn |
central nervous system
NERFINISHED
ⓘ
neurons ⓘ |
| foundInOrganism | Homo sapiens NERFINISHED ⓘ |
| geneticVariantAssociatedWithDisease |
A30P mutation
NERFINISHED
ⓘ
A53T mutation ⓘ E46K mutation ⓘ G51D mutation ⓘ H50Q mutation ⓘ SNCA gene duplication ⓘ SNCA gene triplication ⓘ |
| inclusionBodyComponentOf |
Lewy bodies
NERFINISHED
ⓘ
glial cytoplasmic inclusions in multiple system atrophy ⓘ |
| misfoldingConsequence |
impairment of autophagy-lysosomal pathway
ⓘ
impairment of proteasome function ⓘ mitochondrial dysfunction ⓘ neuronal toxicity ⓘ |
| molecularWeight | ~14 kDa ⓘ |
| normalFunction |
SNARE complex assembly modulation
ⓘ
regulation of neurotransmitter release ⓘ regulation of synaptic vesicle trafficking ⓘ |
| pathologicalFeature |
forms Lewy bodies
ⓘ
forms Lewy neurites ⓘ |
| postTranslationalModification |
nitration
ⓘ
phosphorylation at serine-129 ⓘ truncation ⓘ ubiquitination ⓘ |
| structureProperty |
adopts alpha-helical structure upon membrane binding
ⓘ
intrinsically disordered in solution ⓘ |
| subcellularProcessInvolvedIn |
dopamine neurotransmission
ⓘ
synaptic plasticity ⓘ |
| toxicForm | soluble oligomers ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: alpha-synuclein Description of subject: Alpha-synuclein is a neuronal protein whose abnormal aggregation is a hallmark of Parkinson’s disease and related synucleinopathies.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.