Is predicted to encode a protein with the following domains: Abl-interactor HHR; Abl-interactor, homeo-domain homologous domain; SH3-like domain superfamily; SH3 domain; Variant SH3 domain; ABI family; and ABL interactor 2. Is an ortholog of C. elegans abi-1. In C. elegans, abi-1 is involved in several processes, including positive regulation of endocytosis; presynaptic actin cytoskeleton organization; and synaptic vesicle clustering.