Multifunctional cell surface receptor that binds VLDL and transports it into cells by endocytosis and therefore plays an important role in energy metabolism. Binds also to a wide range of other molecules including Reelin/RELN or apolipoprotein E/APOE-containing ligands as well as clusterin/CLU (PubMed:24381170, PubMed:30873003). In the off-state of the pathway, forms homooligomers or heterooligomers with LRP8 (PubMed:30873003). Upon binding to ligands, homooligomers are rearranged to higher order receptor clusters that transmit the extracellular RELN signal to intracellular signaling processes by binding to DAB1 (PubMed:30873003). This interaction results in phosphorylation of DAB1 leading to the ultimate cell responses required for the correct positioning of newly generated neurons. Later, mediates a stop signal for migrating neurons, preventing them from entering the marginal zone (By similarity). (Microbial infection) Acts as a receptor for Semliki Forest virus. Homooligomer (PubMed:30873003). Binds to the extracellular matrix protein Reelin/RELN (PubMed:30873003). Interacts with LRP8 (PubMed:30873003). Interacts with LDLRAP1 (By similarity). Interacts with SNX17 (By similarity). Interacts with DAB1. Interacts with PCSK9. Interacts with PAFAH1B3 and PAFAH1B2, the catalytic complex of (PAF-AH (I)) heterotetrameric enzyme; these interactions may modulate the Reelin pathway (PubMed:17330141). Interacts with STX5; this interaction mediates VLDLR translocation from the endoplasmic reticulum to the plasma membrane (PubMed:23701949). Interacts with CLU (PubMed:24381170). (Microbial infection) Interacts with protein VP1 of the minor-group human rhinoviruses (HRVs) through the second and third LDL-receptor class A domains. (Microbial infection) Interacts with Semliki Forest virus E2-E1 heterodimer; this interaction mediates viral entry to host cell. Abundant in heart and skeletal muscle; also ovary and kidney; not in liver. Ubiquitinated at Lys-839 by MYLIP leading to degradation. Glycosylated. The disease is caused by variants affecting the gene represented in this entry.