FB2025_05 , released December 11, 2025

General Information
Term	adult superior medial protocerebrum neuron 155	ID (Ontology)	FBbt:20003017 (Fly Anatomy)
Definition	Adult brain-intrinsic neuron of the SMP155 group, with its soma in the brain, medial to the mushroom body medial lobe (Schlegel et al., 2024; Dorkenwald et al., 2024). It is a putative embryonic-born neuron (Schlegel et al., 2024; Dorkenwald et al., 2024). It has postsynapses in the ipsilateral superior medial protocerebrum, the ipsilateral superior intermediate protocerebrum, the ipsilateral crepine, the ipsilateral inferior bridge and the ipsilateral anterior optic tubercle (Schlegel et al., 2024; Dorkenwald et al., 2024). It has presynapses in the ipsilateral anterior optic tubercle, the ipsilateral superior medial protocerebrum, the contralateral anterior optic tubercle, the contralateral superior intermediate protocerebrum, the ipsilateral superior intermediate protocerebrum and the contralateral superior medial protocerebrum (Schlegel et al., 2024; Dorkenwald et al., 2024). Its predicted neurotransmitter is gaba (Eckstein et al., 2024). There are approximately 4 of these cells per organism (Schlegel et al., 2024; Dorkenwald et al., 2024).[ FlyBase:FBrf0246888 FlyBase:FBrf0259490 FlyBase:FBrf0260535 FlyBase:FBrf0260546 ]
Also Known As	"SMP155"
Comment	Uncharacterized putative cell type based on Hemibrain data (Scheffer et al., 2020) and updated using FlyWire (FAFB) data (Dorkenwald et al., 2024; Schlegel et al., 2024). Soma locations are based on the closest annotated neuropil region. Pre- or post-synapse locations are the fewest regions that collectively contain at least 80 percent of all pre- or post-synapses of these neurons in FlyWire. Neurotransmitter predictions are from Eckstein et al. (2024). Other annotations are based on annotations in FlyWire and are available in the supplemental material of Schlegel et al. (2024).
Links to External Ontologies
	VFB:FBbt_20003017
Annotations
Records annotated with this term OR any of its CHILD TERMS
No relevant records available
Records annotated with this exact term (annotations to child terms are NOT included)
No relevant records available
Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records
No relevant statements available

General Information

Term

adult superior medial protocerebrum neuron 155

ID (Ontology)

FBbt:20003017 (Fly Anatomy)

Definition

Adult brain-intrinsic neuron of the SMP155 group, with its soma in the brain, medial to the mushroom body medial lobe (Schlegel et al., 2024; Dorkenwald et al., 2024). It is a putative embryonic-born neuron (Schlegel et al., 2024; Dorkenwald et al., 2024). It has postsynapses in the ipsilateral superior medial protocerebrum, the ipsilateral superior intermediate protocerebrum, the ipsilateral crepine, the ipsilateral inferior bridge and the ipsilateral anterior optic tubercle (Schlegel et al., 2024; Dorkenwald et al., 2024). It has presynapses in the ipsilateral anterior optic tubercle, the ipsilateral superior medial protocerebrum, the contralateral anterior optic tubercle, the contralateral superior intermediate protocerebrum, the ipsilateral superior intermediate protocerebrum and the contralateral superior medial protocerebrum (Schlegel et al., 2024; Dorkenwald et al., 2024). Its predicted neurotransmitter is gaba (Eckstein et al., 2024). There are approximately 4 of these cells per organism (Schlegel et al., 2024; Dorkenwald et al., 2024).[ FlyBase:FBrf0246888 FlyBase:FBrf0259490 FlyBase:FBrf0260535 FlyBase:FBrf0260546 ]

Also Known As

"SMP155"

Comment

Uncharacterized putative cell type based on Hemibrain data (Scheffer et al., 2020) and updated using FlyWire (FAFB) data (Dorkenwald et al., 2024; Schlegel et al., 2024). Soma locations are based on the closest annotated neuropil region. Pre- or post-synapse locations are the fewest regions that collectively contain at least 80 percent of all pre- or post-synapses of these neurons in FlyWire. Neurotransmitter predictions are from Eckstein et al. (2024). Other annotations are based on annotations in FlyWire and are available in the supplemental material of Schlegel et al. (2024).

Links to External Ontologies

VFB:FBbt_20003017

Annotations

Records annotated with this term OR any of its CHILD TERMS

Full annotation statements including this term (annotations to child terms are NOT included), and relevant FlyBase records

No relevant statements available

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Relationships
Is a	adult interneuron primary interneuron adult GABAergic neuron
Part of
Synonyms & Secondary IDs
Synonyms
	"SMP155" EXACT VFB_SYMBOL[ FlyBase:FBrf0246888 ]
Secondary IDs

External Crossreferences & Linkouts
	VFB:FBbt_20003017

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Parents/Children
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Relationships

Is a

adult interneuron
primary interneuron
adult GABAergic neuron

Part of

Synonyms & Secondary IDs

Synonyms

"SMP155" EXACT VFB_SYMBOL[ FlyBase:FBrf0246888 ]

Secondary IDs

External Crossreferences & Linkouts

VFB:FBbt_20003017