Enables phosphatidylinositol-4,5-bisphosphate 5-phosphatase activity. Predicted to be involved in inositol phosphate catabolic process; phosphatidylinositol dephosphorylation; and synaptic vesicle endocytosis. Predicted to be located in axon terminus; cytoplasmic microtubule; and ruffle membrane. Pr
edicted to be active in membrane; perinuclear region of cytoplasm; and presynapse. Is expressed in several structures, including alimentary system; genitourinary system; nose; spleen; and submandibular gland primordium. Orthologous to human SYNJ2 (synaptojanin 2). [provided by Alliance of Genome Resources, Jul 2025]
Enables type II activin receptor binding activity. Involved in positive regulation of protein localization to cell surface; positive regulation of receptor internalization; and regulation of activin receptor signaling pathway. Acts upstream of or within Rho protein signal transduction; protein targe
ting; and regulation of endocytosis. Located in cell surface. Is expressed in several structures, including blood vessel; extraembryonic component; genitourinary system; neural tube; and retina. Orthologous to human SYNJ2BP (synaptojanin 2 binding protein). [provided by Alliance of Genome Resources, Jul 2025]
This locus represents naturally occurring readthrough transcription between the neighboring Synj2bp (synaptojanin 2 binding protein) and Cox16 (cytochrome c oxidase assembly protein 16) genes on chromosome 12. The readthrough transcripts encode fusion proteins t
hat share sequence similarity with each individual gene product. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jun 2015]