Annotated protein:Ephrin-B3. Gene symbol: EFNB3. Taxonomy: Mus musculus (Mouse). Uniprot ID: O35393
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SynGO gene info:SynGO data @ EFNB3
Ontology domain:Biological Process
SynGO term:trans-synaptic signaling by trans-synaptic complex, modulating synaptic transmission (GO:0099557)
Synapse type(s):hippocampus, glutamatergic
Mossy fiber synapse (DG->CA3)
Annotated paper:Armstrong JN, et al. "B-ephrin reverse signaling is required for NMDA-independent long-term potentiation of mossy fibers in the hippocampus" J Neurosci. 2006 Mar 29;26(13):3474-81 PMID:16571754
Figure(s):Fig 3, 4, 5
Annotation description:Mossy fiber posttetanic potentiation (PTP) and LTP measured in CA3 granule neurons after tetanic stimulation induced in the stratum lucidum is impaired in hetero- and homozygotic ephrin-B3lacZ mice that express a mutant, likely dominant-negative (Fig. 4), version of ephrin-B3 (β-galactosidase fused to intracellular C-terminus of ephrin-B3) (Fig 3). Short-term plasticity in the mossy fibers in these mice was normal (Fig. 5)
Evidence tracking, Biological System:Intact tissue
Evidence tracking, Protein Targeting:Genetic transformation (eg; knockout, knockin, mutations)
Evidence tracking, Experiment Assay:Whole-cell patch clamp
Electrophysiology (generic)
Annotator(s):Tony Cijsouw (ORCID:0000-0003-0912-1514)
Thomas Biederer (ORCID:0000-0002-3670-7863)
Lab:Department of Neuroscience, Tufts University School of Medicine, Boston, MA 02111, USA
Additional literature:Disrupting interactions between postsynaptic PDZ scaffolding proteins and Eph receptors in CA3 pyramidal neurons disrupted mossy fiber LTP
In addition, application of fc fusion proteins that disrupt EphB to B-ephrin signaling were also able to block stable mossy fiber LTP. Together, this indicates that a trans-synaptic signal is required for mossy fibers to undergo LTP @ PMID:12052960
SynGO annotation ID:1046
Dataset release (version):20231201
View annotation as GO-CAM model:Gene Ontology