3rle | pdb_00003rle

Crystal Structure of GRASP55 GRASP domain (residues 7-208)

spinqualitylabelsall models 3rle, resolution 1.65Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3rle is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. NonStd Res: MSE Gene: GORASP2, GOLPH6 (Homo sapiens) Resources: FirstGlance, OCA, RCSB, PDBsum Publication Abstract from PubMed Biogenesis of the ribbon-like membrane network of the mammalian Golgi requires membrane tethering by the conserved GRASP domain in GRASP65 and GRASP55, yet the tethering mechanism is not fully understood. Here, we report the crystal structure of the GRASP55 GRASP domain, which revealed an unusual arrangement of two tandem PDZ folds that more closely resemble prokaryotic PDZ domains. Biochemical and functional data indicated that the interaction between the ligand-binding pocket of PDZ1 and an internal ligand on PDZ2 mediates the GRASP self-interaction, and structural analyses suggest that this occurs via a unique mode of internal PDZ ligand recognition. Our data uncover the structural basis for ligand specificity and provide insight into the mechanism of GRASP-dependent membrane tethering of analogous Golgi cisternae. Structure of the Membrane-tethering GRASP Domain Reveals a Unique PDZ Ligand Interaction That Mediates Golgi Biogenesis.,Truschel ST, Sengupta D, Foote A, Heroux A, Macbeth MR, Linstedt AD J Biol Chem. 2011 Jun 10;286(23):20125-9. Epub 2011 Apr 22. PMID:21515684 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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