E3 Ubiquitin-Protein Ligase MYLIP (MYLIP) Human Recombinant Protein

The ERM protein family members ezrin, radixin, and moesin are cytoskeletal effector proteins linking actin to membrane-bound proteins at the cell surface. Myosin regulatory light chain interacting protein (MYLIP) is a novel ERM-like protein that interacts with myosin regulatory light chain and inhibits neurite outgrowth. [provided by RefSeq, Jul 2008]

MYLIP: E3 ubiquitin-protein ligase that mediates ubiquitination and subsequent proteasomal degradation of myosin regulatory light chain (MRLC), LDLR, VLDLR and LRP8. Activity depends on E2 enzymes of the UBE2D family. Proteasomal degradation of MRLC leads to inhibit neurite outgrowth in presence of NGF by counteracting the stabilization of MRLC by saposin-like protein (CNPY2/MSAP) and reducing CNPY2-stimulated neurite outgrowth. Acts as a sterol- dependent inhibitor of cellular cholesterol uptake by mediating ubiquitination and subsequent degradation of LDLR. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: EC 6.3.2.19; Ubiquitin conjugating system; Ligase; EC 6.3.2.-; Ubiquitin ligase; Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 6p22.3

Cellular Component: cytoplasm; cytoskeleton; extrinsic to membrane; intracellular; plasma membrane

Molecular Function: cytoskeletal protein binding; ligase activity; protein binding; ubiquitin-protein ligase activity; zinc ion binding

Biological Process: cell motility; cholesterol homeostasis; nervous system development; positive regulation of protein catabolic process; protein destabilization; protein ubiquitination; protein ubiquitination during ubiquitin-dependent protein catabolic process; regulation of low-density lipoprotein receptor catabolic process