Anti-SEPT4

septin 4(SEPT4) Homo sapiens This gene is a member of the septin family of nucleotide binding proteins, originally described in yeast as cell division cycle regulatory proteins. Septins are highly conserved in yeast, Drosophila, and mouse, and appear to regulate cytoskeletal organization. Disruption of septin function disturbs cytokinesis and results in large multinucleate or polyploid cells. This gene is highly expressed in brain and heart. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. One of the isoforms (known as ARTS) is distinct, it is localized to the mitochondria, and has a role in apoptosis and cancer. [provided by RefSeq, Nov 2010], Protein function: Filament-forming cytoskeletal GTPase (Probable). Pro- apoptotic protein involved in LGR5-positive intestinal stem cell and Paneth cell expansion in the intestines, via its interaction with XIAP. May also play a role in the regulation of cell fate in the intestine. Positive regulator of apoptosis involved in hematopoietic stem cell homeostasis, via its interaction with XIAP. Negative regulator of repair and hair follicle regeneration in response to injury, due to inhibition of hair follicle stem cell proliferation, potentially via its interaction with XIAP. Plays an important role in male fertility and sperm motility. During spermiogenesis, essential for the establishment of the annulus (a fibrous ring structure connecting the midpiece and the principal piece of the sperm flagellum) which is a requisite for the structural and mechanical integrity of the sperm. Involved in the migration of cortical neurons and the formation of neuron leading processes during embryonic development. Required for dopaminergic metabolism in presynaptic autoreceptors, potentially via activity as a presynaptic scaffold protein. [The UniProt Consortium] Recommended dilutions: WB 1:500-2000 ELISA 1:5000-20000. Cellular localization: Cytoplasm . Cell projection, cilium, flagellum . Cytoplasmic vesicle, secretory vesicle . Cell projection, axon . Cell projection, dendrite . Perikaryon . Cell junction, synapse . In platelets, found in areas surrounding alpha-granules (PubMed:15116257). Found in the sperm annulus, a fibrous ring structure connecting the midpiece and the principal piece of the sperm flagellum (PubMed:25588830). Expressed and colocalized with SLC6A3 and SNCA in axon terminals, especially at the varicosities (By similarity). ., [Isoform ARTS]: Mitochondrion . Nucleus . While predominantly localized in the mitochondria under resting conditions, translocates into the nucleus after TGF-beta treatment and apoptosis induction. .