Tubby Homolog (TUB) Antibody – Rabbit Polyclonal

This gene encodes a member of the Tubby family of bipartite transcription factors. The encoded protein may play a role in obesity and sensorineural degradation. The crystal structure has been determined for a similar protein in mouse, and it functions as a membrane-bound transcription regulator that translocates to the nucleus in response to phosphoinositide hydrolysis. Two transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

tubby: an effector protein for heterotrimeric G protein-coupled receptors. Binds phospholipid and is anchored to the plasma membrane through binding phosphatidylinositol-4,5-bisphosphate. Is released upon activation of phospholipase C. Translocates from the plasma membrane to the nucleus upon activation by the G-alpha(q)/(11) subclass of G proteins that are linked to receptors including the seratonin receptor 5-HT(2C). Can bind DNA in vitro and may contribute to the regulation of transcription in the nucleus. TUB can be phosphorylated by the insulin receptor and may participate in insulin receptor signaling. Does not have a cleavable signal peptide and is secreted by a non-conventional pathway. Highly expressed in the paraventricular nucleus of the hypothalamus and several other brain regions. May play a role in the hypothalamic regulation of body weight. Contributes to stimulation of phagocytosis of apoptotic retinal pigment epithelium (RPE) cells and macrophages. Belongs to the TUB family. Mutations in the tubby promote maturity-onset obesity in mice. Interacts with GNAQ. Interacts with TULP1. Two isoforms of the human protein are produced through alternative splicing.

Protein type: Lipid-binding; Membrane protein, peripheral

Chromosomal Location of Human Ortholog: 11p15.5

Cellular Component: cytoplasm; extracellular region; plasma membrane; nucleus; cytosol

Molecular Function: protein complex binding; G-protein coupled photoreceptor activity

Biological Process: sensory perception of sound; retina development in camera-type eye; positive regulation of phagocytosis; response to hormone stimulus; phototransduction; multicellular organismal macromolecule metabolic process; phagocytosis; detection of visible light

Disease: Retinal Dystrophy And Obesity