5uph | pdb_00005uph

Lipids bound lysosomal integral membrane protein 2

spinqualitylabelsall models 5uph, resolution 3.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5uph is a 2 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 3Å Ligands: BMA, CLR, M6D, MAN, NAG, PCW Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Disease SCRB2_HUMAN Unverricht-Lundborg disease;Gaucher disease type 1;Action myoclonus - renal failure syndrome. The disease is caused by mutations affecting the gene represented in this entry. Genetic variants in SCARB2 can act as modifier of the phenotypic expression and severity of Gaucher disease. Function SCRB2_HUMAN Acts as a lysosomal receptor for glucosylceramidase (GBA) targeting. Publication Abstract from PubMed Lysosomal integral membrane protein-2 (LIMP-2/SCARB2) contributes to endosomal and lysosomal function. LIMP-2 deficiency is associated with neurological abnormalities and kidney failure and, as an acid glucocerebrosidase receptor, impacts Gaucher and Parkinson's diseases. Here we report a crystal structure of a LIMP-2 luminal domain dimer with bound cholesterol and phosphatidylcholine. Binding of these lipids alters LIMP-2 from functioning as a glucocerebrosidase-binding monomer toward a dimeric state that preferentially binds anionic phosphatidylserine over neutral phosphatidylcholine. In cellular uptake experiments, LIMP-2 facilitates transport of phospholipids into murine fibroblasts, with a strong substrate preference for phosphatidylserine. Taken together, these biophysical and cellular studies define the structural basis and functional importance of a form of LIMP-2 for lipid trafficking. We propose a model whereby switching between monomeric and dimeric forms allows LIMP-2 to engage distinct binding partners, a mechanism that may be shared by SR-BI and CD36, scavenger receptor proteins highly homologous to LIMP-2. Lysosomal integral membrane protein-2 as a phospholipid receptor revealed by biophysical and cellular studies.,Conrad KS, Cheng TW, Ysselstein D, Heybrock S, Hoth LR, Chrunyk BA, Am Ende CW, Krainc D, Schwake M, Saftig P, Liu S, Qiu X, Ehlers MD Nat Commun. 2017 Dec 4;8(1):1908. doi: 10.1038/s41467-017-02044-8. PMID:29199275 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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