LRP1: a receptor involved in endocytosis, phagocytosis of apoptotic cells, and neural signaling. Modulates cellular events including APP metabolism, kinase-dependent intracellular signaling, neuronal calcium signaling and neurotransmission. Involved in the plasma clearance of chylomicron remnants and activated alpha 2-macroglobulin, as well as the local metabolism of complexes between plasminogen activators and their endogenous inhibitors. Plays a fundamental role in cellular signaling pathways in the brain. Mediates neural NMDA gating via a complex of LRP1, PSD-95 and NMDAR. A type I membrane protein. After cleavage, the intracellular domain (LRPICD) is detected both in the cytoplasm and in the nucleus. Most abundant in liver, brain and lung.
Protein type: Membrane protein, integral; Receptor, misc.; Motility/polarity/chemotaxis; Cell surface
Chromosomal Location of Human Ortholog: 12q13.3
Cellular Component: focal adhesion; clathrin-coated vesicle; cell soma; lysosomal membrane; integral to plasma membrane; cytoplasm; dendrite; plasma membrane; nucleolus; coated pit; endosome; receptor complex
Molecular Function: protein binding; lipoprotein transporter activity; protease binding; protein complex binding; apolipoprotein binding; receptor activity; calcium ion binding
Biological Process: cholesterol metabolic process; phototransduction, visible light; receptor-mediated endocytosis; regulation of phospholipase A2 activity; negative regulation of Wnt receptor signaling pathway; lipoprotein metabolic process; negative regulation of smooth muscle cell migration; positive regulation of protein transport; positive regulation of lipid transport; cell proliferation; lipoprotein transport; regulation of actin cytoskeleton organization and biogenesis; protein kinase C activation; negative regulation of neuron apoptosis; regulation of cholesterol transport; retinoid metabolic process; apoptotic cell clearance; aging
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