DBN1: a cytoplasmic actin-binding protein thought to play a role in the process of neuronal growth. It is a member of the drebrin family of proteins that are developmentally regulated in the brain. A decrease in the amount of this protein in the brain has been implicated as a possible contributing factor in the pathogenesis of memory disturbance in Alzheimer's disease. Expressed in brain neurons, heart, placenta, skeletal muscle, kidney and pancreas. Two alternatively spliced isoforms have been described.
Protein type: Actin-binding; Cytoskeletal; Motility/polarity/chemotaxis
Chromosomal Location of Human Ortholog: 13 B1|13 30.06 cM
Cellular Component: actin cytoskeleton; actin filament; asymmetric synapse; axonal growth cone; axonal spine; cell junction; cell projection; cell soma; cytoplasm; dendritic filopodium; dendritic shaft; dendritic spine; excitatory synapse; filopodium; gap junction; growth cone; intercellular junction; intracellular; lamellipodium; membrane; neuron spine; perinuclear region of cytoplasm; plasma membrane; postsynaptic density; postsynaptic membrane
Molecular Function: actin binding; actin filament binding; cadherin binding; cytoskeletal protein binding; profilin binding; protein binding
Biological Process: actin filament organization; cell communication by chemical coupling; cell communication by electrical coupling; cell differentiation; cellular response to transforming growth factor beta stimulus; cellular response to tumor necrosis factor; generation of neurons; maintenance of cellular protein localization; modulation of inhibitory postsynaptic potential; multicellular organism development; negative regulation of actin filament bundle formation; negative regulation of actin-dependent ATPase activity; negative regulation of locomotion involved in locomotory behavior; negative regulation of muscle filament sliding; nervous system development; positive regulation of axon extension; positive regulation of cell-substrate adhesion; positive regulation of excitatory postsynaptic potential; positive regulation of neuron projection development; positive regulation of substrate adhesion-dependent cell spreading; prepulse inhibition; regulation of actin filament polymerization; regulation of filopodium formation
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