Enables several functions, including identical protein binding activity; protein C-terminus binding activity; and protein kinase binding activity. Involved in several processes, including lipid tube assembly; positive regulation of membrane tubulation; and vesicle scission. Located in several cellular components, including basal dendrite; neuronal cell body; and perinuclear region of cytoplasm. Is active in several cellular components, including Schaffer collateral - CA1 synapse; hippocampal mossy fiber to CA3 synapse; and synaptic vesicle membrane. Biomarker of visual epilepsy. Orthologous to human SH3GL2 (SH3 domain containing GRB2 like 2, endophilin A1). [provided by Alliance of Genome Resources, Apr 2022]