DTNBP1 Antibody – Rabbit Polyclonal

This gene encodes a protein that may play a role in organelle biogenesis associated with melanosomes, platelet dense granules, and lysosomes. A similar protein in mouse is a component of a protein complex termed biogenesis of lysosome-related organelles complex 1 (BLOC-1), and binds to alpha- and beta-dystrobrevins, which are components of the dystrophin-associated protein complex (DPC). Mutations in this gene are associated with Hermansky-Pudlak syndrome type 7. This gene may also be associated with schizophrenia. Multiple transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

DTNBP1: The BLOC-1 complex is required for normal biogenesis of lysosome-related organelles, such as platelet dense granules and melanosomes. Plays a role in intracellular vesicle trafficking. Plays a role in synaptic vesicle trafficking and in neurotransmitter release. May be required for normal dopamine homeostasis in the cerebral cortex, hippocampus, and hypothalamus. Plays a role in the regulation of cell surface exposure of DRD2. Contributes to the regulation of dopamine signaling. May play a role in actin cytoskeleton reorganization and neurite outgrowth. May modulate MAPK8 phosphorylation. Part of the biogenesis of lysosome-related organelles complex 1 (BLOC-1). The BLOC-1 complex is composed of BLOC1S1, BLOC1S2, BLOC1S3, DTNBP1, MUTED, PLDN, CNO/cappuccino and SNAPIN. Binds to DTNA and DTNB but may not be a physiological binding partner (PubMed:16980328). Interacts with RNF151 and CMYA5. Identified in a complex with the adapter-related protein complex 3 (AP-3). Interacts with TRIM32, AP3M1 and AP3B2. Identified in a complex with the biogenesis of lysosome-related organelles complex 2 (BLOC-2). Interacts with the DNA-dependent protein kinase complex DNA-PK. Detected in brain, in neurons and in neuropil. Detected in dentate gyrus and in pyramidal cells of hippocampus CA2 and CA3. Belongs to the dysbindin family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Vesicle

Chromosomal Location of Human Ortholog: 6p22.3

Cellular Component: endoplasmic reticulum membrane; neuron projection; synaptic vesicle membrane; melanosome membrane; postsynaptic density; dendritic spine; cytosol; postsynaptic membrane; growth cone; axon; cytoplasm; endosome membrane; nucleus; sarcoplasm; cell junction; sarcolemma

Molecular Function: protein binding

Biological Process: platelet dense granule organization and biogenesis; melanosome organization and biogenesis; regulation of dopamine receptor signaling pathway; actin cytoskeleton reorganization; anterograde synaptic vesicle transport; post-Golgi vesicle-mediated transport; blood coagulation; anterograde axon cargo transport; positive regulation of neurotransmitter secretion; regulation of dopamine secretion; neurite development; neurite morphogenesis

Disease: Schizophrenia; Hermansky-pudlak Syndrome 7